:root {
  color-scheme: light;
  --ink: #17201c;
  --muted: #60706a;
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-soft: #eaf1ed;
  --line: #d4ddd8;
  --green-900: #173f35;
  --green-700: #21634f;
  --green-500: #2d8a68;
  --yellow: #f1bb39;
  --yellow-soft: #fff5d7;
  --coral: #df6d57;
  --coral-soft: #fff0ec;
  --blue: #3577a8;
  --blue-soft: #e8f2f8;
  --medium-blue: #286c9f;
  --medium-blue-soft: #e3f1fb;
  --plus-blue: #006b85;
  --plus-blue-soft: #d9f7ff;
  --practice-blue: #2d739f;
  --practice-blue-hover: #245f86;
  --danger: #b64242;
  --success: #1f7a50;
  --code-bg: #111a17;
  --code-line: #2a3833;
  --shadow: 0 14px 34px rgba(23, 63, 53, 0.12);
  --shadow-sm: 0 2px 8px rgba(23, 63, 53, 0.07);
  --shadow-md: 0 10px 26px rgba(23, 63, 53, 0.12);
  --shadow-lg: 0 26px 60px rgba(23, 63, 53, 0.18);
  --ring: 0 0 0 3px rgba(45, 138, 104, 0.22);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --transition: 200ms cubic-bezier(0.22, 0.61, 0.36, 1);
  --green-grad: linear-gradient(135deg, #2d8a68 0%, #21634f 55%, #173f35 100%);
  --hero-grad: linear-gradient(125deg, rgba(13, 49, 40, 0.92) 0%, rgba(20, 74, 58, 0.78) 48%, rgba(33, 99, 79, 0.62) 100%);
  --accent-soft: rgba(45, 138, 104, 0.12);
  --sidebar-width: 252px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #ecf5f0;
  --muted: #a8bbb2;
  --bg: #101714;
  --surface: #17231f;
  --surface-soft: #22332d;
  --line: #34483f;
  --green-700: #8bdabb;
  --green-500: #56bf91;
  --yellow-soft: #372f18;
  --coral-soft: #3a211d;
  --blue-soft: #172f3f;
  --medium-blue: #9bd3ff;
  --medium-blue-soft: #173449;
  --plus-blue: #7beaff;
  --plus-blue-soft: #103944;
  --practice-blue: #337daa;
  --practice-blue-hover: #29698f;
  --danger: #ff9c98;
  --success: #83dfaa;
  --code-bg: #0b1110;
  --code-line: #2d4038;
  --shadow: 0 16px 38px rgba(0, 0, 0, 0.34);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 28px 64px rgba(0, 0, 0, 0.46);
  --ring: 0 0 0 3px rgba(86, 191, 145, 0.3);
  --green-grad: linear-gradient(135deg, #2d8a68 0%, #21634f 60%, #14302a 100%);
  --hero-grad: linear-gradient(125deg, rgba(8, 28, 23, 0.94) 0%, rgba(16, 56, 44, 0.84) 48%, rgba(25, 74, 60, 0.7) 100%);
  --accent-soft: rgba(86, 191, 145, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  background-image: radial-gradient(1200px 520px at 88% -8%, var(--accent-soft), transparent 60%);
  background-attachment: fixed;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@keyframes pylab-fade-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pylab-pop {
  0% { transform: scale(1); }
  35% { transform: scale(1.16); }
  100% { transform: scale(1); }
}

#mainContent {
  animation: pylab-fade-up 360ms cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
}

button,
a,
input,
textarea,
select {
  outline-color: var(--blue);
}

button {
  color: inherit;
}

a {
  color: var(--green-700);
}

img {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  line-height: 1.18;
  letter-spacing: 0;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  z-index: 40;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  border-right: 1px solid var(--line);
  background: #fbfdfc;
}

:root[data-theme="dark"] .sidebar {
  background: #121b18;
}

.brand {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  align-items: center;
  padding: 0 8px 22px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 12px;
  background: var(--green-grad);
  color: #fff;
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.2rem;
  font-weight: 800;
  box-shadow: 0 6px 14px rgba(23, 63, 53, 0.26);
}

.brand-mark-photo {
  background: #173f35;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.98rem;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.72rem;
}

.main-nav {
  display: grid;
  gap: 4px;
}

.nav-item {
  width: 100%;
  min-height: 44px;
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 11px;
  align-items: center;
  padding: 9px 12px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-weight: 650;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.nav-item:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

.nav-item.is-active {
  background: var(--green-grad);
  color: #fff;
  font-weight: 750;
  box-shadow: 0 8px 18px rgba(23, 63, 53, 0.24);
}

.nav-item svg,
.icon-button svg,
.button svg,
.points-chip svg,
.section-title svg,
.stat-icon svg,
.lesson-state svg,
.achievement-icon svg,
.callout svg {
  width: 19px;
  height: 19px;
  stroke-width: 2;
}

.sidebar-spacer {
  flex: 1;
}

.profile-summary {
  padding: 14px 10px 4px;
  border-top: 1px solid var(--line);
}

.profile-row {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 32px;
  gap: 9px;
  align-items: center;
}

.profile-row strong,
.profile-row small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-row small,
.profile-summary > small {
  color: var(--muted);
  font-size: 0.72rem;
}

.avatar {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--yellow);
  color: #3e2b00;
  font-weight: 800;
}

.icon-button {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
}

.icon-button:hover {
  border-color: var(--line);
  background: var(--surface-soft);
}

.backup-button,
.theme-toggle-button,
.structogrammer-link {
  border-color: var(--line);
  background: var(--surface);
  color: var(--green-700);
}

.xp-track,
.progress-track {
  overflow: hidden;
  height: 9px;
  border-radius: 999px;
  background: var(--surface-soft);
  box-shadow: inset 0 1px 2px rgba(23, 63, 53, 0.12);
}

.xp-track {
  margin: 13px 0 5px;
}

.xp-track span,
.progress-track span {
  position: relative;
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green-500), var(--green-700));
  transition: width 450ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.xp-track span::after,
.progress-track span::after {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35));
}

.page-column {
  grid-column: 2;
  min-width: 0;
}

.topbar {
  position: sticky;
  z-index: 30;
  top: 0;
  min-height: 82px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 14px clamp(18px, 3vw, 40px);
  border-bottom: 1px solid rgba(212, 221, 216, 0.9);
  background: rgba(244, 247, 245, 0.94);
  backdrop-filter: blur(10px);
}

:root[data-theme="dark"] .topbar {
  border-bottom-color: rgba(52, 72, 63, 0.92);
  background: rgba(16, 23, 20, 0.94);
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.1vw, 1.9rem);
}

.eyebrow {
  margin-bottom: 3px;
  color: var(--green-700);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.runtime-chip,
.points-chip {
  min-height: 38px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  font-size: 0.78rem;
  white-space: nowrap;
}

.structogrammer-link {
  color: var(--green-700);
  text-decoration: none;
}

.structogrammer-link:hover {
  border-color: var(--green-500);
  color: var(--green-900);
  background: var(--surface-soft);
}

.points-chip {
  color: #5c4100;
  background: var(--yellow-soft);
  border-color: #ecd88f;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.points-chip:hover {
  border-color: var(--yellow);
  box-shadow: 0 6px 16px rgba(241, 187, 57, 0.28);
}

.points-chip:active {
  transform: translateY(1px);
}

.points-chip.is-bumped {
  animation: pylab-pop 520ms cubic-bezier(0.22, 0.61, 0.36, 1);
  box-shadow: 0 0 0 4px rgba(241, 187, 57, 0.26);
}

:root[data-theme="dark"] .points-chip {
  color: #f3cf6a;
  border-color: #66501f;
  background: #352b12;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 0 3px rgba(241, 187, 57, 0.22);
}

.runtime-chip.is-ready .status-dot {
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(31, 122, 80, 0.18);
}

.runtime-chip.is-error .status-dot {
  background: var(--danger);
  box-shadow: 0 0 0 3px rgba(182, 66, 66, 0.18);
}

.mobile-menu-button {
  display: none;
}

#mainContent {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 22px clamp(18px, 3vw, 40px) 60px;
}

.portal-footer {
  width: min(1280px, 100%);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin: 0 auto;
  padding: 18px clamp(18px, 3vw, 40px) 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.74rem;
  text-align: right;
}

.portal-footer a {
  color: inherit;
  font-weight: 750;
  text-underline-offset: 3px;
}

.portal-footer a:hover {
  color: var(--green-700);
}

#mainContent:focus {
  outline: none;
}

.hero-band {
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: clamp(28px, 5vw, 64px);
  border-radius: var(--radius-xl);
  background-image: url("assets/python-lernraum.png");
  background-position: center;
  background-size: cover;
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.hero-band::before {
  position: absolute;
  inset: 0;
  content: "";
  background: var(--hero-grad);
  pointer-events: none;
}

.hero-band::after {
  position: absolute;
  right: -90px;
  bottom: -110px;
  width: 320px;
  height: 320px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(241, 187, 57, 0.28), transparent 68%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 630px;
}

.hero-band .eyebrow {
  color: #f8d985;
}

.hero-band h2 {
  max-width: 620px;
  margin-bottom: 15px;
  font-size: clamp(2rem, 4.2vw, 4rem);
}

.hero-band p {
  max-width: 590px;
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.02rem;
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  background: var(--green-grad);
  color: #fff;
  box-shadow: 0 8px 18px rgba(23, 63, 53, 0.22);
}

.button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(23, 63, 53, 0.3);
}

.hero-band .button-primary {
  background: linear-gradient(135deg, #ffd564 0%, var(--yellow) 100%);
  color: #3d2c00;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.28);
}

.hero-band .button-primary:hover {
  background: linear-gradient(135deg, #ffdf86 0%, #ffd05a 100%);
}

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.button-secondary:hover {
  background: var(--surface-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.hero-band .button-secondary {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(17, 39, 33, 0.35);
  color: #fff;
}

.button-practice {
  background: linear-gradient(135deg, var(--practice-blue) 0%, var(--practice-blue-hover) 100%);
  color: #fff;
  box-shadow: 0 8px 18px rgba(45, 115, 159, 0.26);
}

.button-practice:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(45, 115, 159, 0.32);
}

.button-small {
  min-height: 36px;
  padding: 7px 11px;
  font-size: 0.82rem;
}

.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 30px;
}

.stat-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.stat-item:hover {
  transform: translateY(-3px);
  border-color: var(--green-500);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: #fff;
  background: var(--green-grad);
  box-shadow: 0 6px 14px rgba(23, 63, 53, 0.22);
}

.stat-icon.is-yellow {
  color: #fff;
  background: linear-gradient(135deg, #f6c94e 0%, #d99a1f 100%);
  box-shadow: 0 6px 14px rgba(217, 154, 31, 0.28);
}

.stat-icon.is-coral {
  color: #fff;
  background: linear-gradient(135deg, #ec8068 0%, #cc5640 100%);
  box-shadow: 0 6px 14px rgba(204, 86, 64, 0.28);
}

.stat-icon.is-blue {
  color: #fff;
  background: linear-gradient(135deg, #4a93c4 0%, #2d739f 100%);
  box-shadow: 0 6px 14px rgba(45, 115, 159, 0.28);
}

.stat-item strong,
.stat-item small {
  display: block;
}

.stat-item strong {
  font-size: 1.32rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.stat-item small {
  color: var(--muted);
}

.content-section {
  margin-top: 30px;
}

.section-heading {
  display: flex;
  gap: 18px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-heading h2 {
  margin-bottom: 4px;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.section-heading p {
  margin: 0;
  color: var(--muted);
}

.text-button {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  padding: 5px 0;
  border: 0;
  background: transparent;
  color: var(--green-700);
  font-weight: 750;
  cursor: pointer;
}

.text-button:hover {
  color: var(--green-900);
}

.text-button svg {
  width: 17px;
  height: 17px;
}

.continue-band {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.continue-main {
  padding: clamp(20px, 3vw, 32px);
}

.continue-main h3 {
  margin-bottom: 8px;
  font-size: 1.55rem;
}

.continue-main p {
  color: var(--muted);
}

.lesson-meta,
.exercise-meta,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
}

.meta-pill,
.tag {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.meta-pill svg,
.tag svg {
  width: 14px;
  height: 14px;
}

.continue-progress {
  display: grid;
  align-content: center;
  gap: 10px;
  padding: 28px;
  background: var(--green-grad);
  color: #fff;
}

.continue-progress strong {
  letter-spacing: -0.02em;
}

.continue-progress strong {
  font-size: 2rem;
}

.continue-progress small {
  color: rgba(255, 255, 255, 0.72);
}

.continue-progress .progress-track {
  background: rgba(255, 255, 255, 0.2);
}

.continue-progress .progress-track span {
  background: var(--yellow);
}

.structure-promo {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  margin: 30px 0;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid #c6d6ce;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #eef5f0 0%, #e0eee7 100%);
  box-shadow: var(--shadow-sm);
}

.structure-promo h2,
.structure-lead h2,
.commands-lead h2 {
  margin-bottom: 10px;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
}

.structure-promo p,
.structure-lead p,
.commands-lead p {
  color: #405149;
}

.structure-promo .lesson-meta {
  margin: 18px 0;
}

.structure-promo-preview {
  width: min(100%, 430px);
  justify-self: end;
}

.competency-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: clamp(22px, 4vw, 52px);
  align-items: center;
  margin-bottom: 22px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid #bdd8cb;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #f1f8f4 0%, #e3f1ea 100%);
  box-shadow: var(--shadow-sm);
}

.competency-lead h2 {
  margin: 5px 0 10px;
  font-size: clamp(1.7rem, 3vw, 2.55rem);
}

.competency-lead > div:first-child > p:last-child {
  max-width: 720px;
  color: var(--muted);
}

.competency-summary {
  display: grid;
  gap: 10px;
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--green-grad);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.competency-summary strong {
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  letter-spacing: -0.05em;
  line-height: 1;
}

.competency-summary > span {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
}

.competency-summary .progress-track {
  background: rgba(255, 255, 255, 0.2);
}

.competency-summary .progress-track span {
  background: #9ce8c8;
}

.competency-note {
  margin-bottom: 30px;
}

.competency-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.competency-card {
  display: flex;
  flex-direction: column;
  gap: 15px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.competency-card.is-complete {
  border-color: #74c49f;
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(45, 138, 104, 0.12);
}

.competency-card-heading {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.competency-state {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--muted);
}

.competency-card.is-complete .competency-state {
  background: var(--green-soft);
  color: var(--green-700);
}

.competency-state svg {
  width: 21px;
  height: 21px;
}

.competency-status {
  display: block;
  margin-bottom: 4px;
  color: var(--green-600);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.competency-card h3 {
  font-size: 1rem;
  line-height: 1.38;
}

.competency-evidence {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.competency-evidence span {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.competency-evidence svg {
  width: 13px;
  height: 13px;
}

.competency-action {
  align-self: flex-start;
  margin-top: auto;
}

.module-grid,
.lesson-grid,
.exercise-grid,
.achievement-grid,
.command-grid,
.reference-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.module-card,
.lesson-card,
.exercise-card,
.achievement-card,
.command-card,
.reference-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.module-card:hover,
.lesson-card:hover,
.exercise-card:hover,
.command-card:hover {
  border-color: color-mix(in srgb, var(--green-500) 78%, var(--line));
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--green-500) 28%, transparent);
}

.module-number {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 7px;
  background: var(--green-900);
  color: #fff;
  font-family: Consolas, "Courier New", monospace;
  font-weight: 800;
}

.module-card:nth-child(2) .module-number {
  background: var(--coral);
}

.module-card:nth-child(3) .module-number {
  background: var(--blue);
}

.module-card:nth-child(4) .module-number {
  background: #8c6c12;
}

.module-card:nth-child(5) .module-number {
  background: #52656e;
}

.module-card h3,
.lesson-card h3,
.exercise-card h3,
.achievement-card h3,
.command-card h3,
.reference-card h3 {
  margin-bottom: 7px;
  font-size: 1.06rem;
}

.module-card p,
.lesson-card p,
.exercise-card p,
.achievement-card p,
.command-card p,
.reference-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

.module-card .progress-track {
  margin-top: auto;
}

.module-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 9px;
  color: var(--muted);
  font-size: 0.75rem;
}

.lesson-card,
.exercise-card,
.command-card {
  cursor: pointer;
}

/* Workbook: ruhiger Lesebereich innerhalb von PythonLab */
.workbook-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
  gap: 22px;
  align-items: center;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid color-mix(in srgb, var(--green-500) 32%, var(--line));
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface) 86%, var(--green-100)) 0%, var(--surface) 66%),
    var(--surface);
  box-shadow: var(--shadow-lg);
}

.workbook-hero h2 {
  max-width: 760px;
  margin-bottom: 12px;
  font-size: clamp(1.9rem, 3.4vw, 3.2rem);
}

.workbook-hero p {
  max-width: 690px;
  color: var(--muted);
}

.workbook-hero-note {
  display: grid;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
}

.workbook-hero-note span {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--green-grad);
  color: #fff;
}

.workbook-hero-note p {
  margin: 0;
}

.workbook-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.workbook-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.workbook-card:hover {
  border-color: color-mix(in srgb, var(--blue) 55%, var(--line));
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--blue) 18%, transparent);
}

.workbook-card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--blue) 12%, var(--surface-soft));
  color: var(--blue);
}

.workbook-card-meta {
  margin-bottom: 6px;
  color: var(--green-700);
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.workbook-card h3 {
  margin-bottom: 7px;
  font-size: 1.08rem;
}

.workbook-card p {
  color: var(--muted);
  font-size: 0.9rem;
}

.workbook-card .text-button {
  margin-top: auto;
}

.workbook-bridge {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.workbook-bridge h2 {
  margin-bottom: 6px;
}

.workbook-bridge p {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
}

.workbook-bridge-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.lesson-card:focus-visible,
.exercise-card:focus-visible,
.command-card:focus-visible {
  outline: 3px solid rgba(53, 119, 168, 0.3);
  outline-offset: 2px;
}

.lesson-state {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-soft);
  color: var(--muted);
}

.lesson-state.is-done {
  background: #def2e6;
  color: var(--success);
}

.lesson-index {
  margin-bottom: 12px;
  color: var(--green-700);
  font-family: Consolas, "Courier New", monospace;
  font-weight: 800;
}

.lesson-card .lesson-meta,
.exercise-card .exercise-meta,
.command-card .exercise-meta {
  margin-top: auto;
  padding-top: 10px;
}

.difficulty-easy {
  background: #def2e6;
  color: #246945;
}

.difficulty-medium {
  background: var(--medium-blue-soft);
  color: var(--medium-blue);
}

.difficulty-plus {
  background: var(--plus-blue-soft);
  color: var(--plus-blue);
}

.difficulty-extra {
  background: #efe6fb;
  color: #6b46b0;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.filter-button {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
}

.filter-button:hover,
.filter-button.is-active {
  border-color: var(--green-700);
  background: var(--green-900);
  color: #fff;
}

.view-intro {
  max-width: 800px;
  margin-bottom: 24px;
  color: var(--muted);
}

.lesson-detail {
  display: grid;
  gap: 18px;
}

.detail-header {
  display: grid;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.back-button {
  justify-self: start;
}

.detail-header h2 {
  max-width: 850px;
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.detail-header > p {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.objectives-band {
  padding: 18px 20px;
  border: 1px solid #b8d7c8;
  border-left: 5px solid var(--green-500);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #edf7f2 0%, #e3f1ea 100%);
  box-shadow: var(--shadow-sm);
}

.objectives-band h3 {
  margin-bottom: 9px;
  font-size: 1rem;
}

.objectives-band ul {
  margin: 0;
  padding-left: 21px;
}

.lesson-detail.difficulty-page-medium .objectives-band {
  border-color: #b5d4e9;
  border-left-color: #4b9bd3;
  background: var(--medium-blue-soft);
}

.lesson-detail.difficulty-page-plus .objectives-band {
  border-color: #a8dce5;
  border-left-color: #12b7d6;
  background: var(--plus-blue-soft);
}

.lesson-section {
  display: grid;
  grid-template-columns: minmax(170px, 0.36fr) minmax(0, 1fr);
  gap: clamp(20px, 5vw, 70px);
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.lesson-section h3 {
  position: sticky;
  top: 105px;
  margin: 0;
  font-size: 1.15rem;
}

.lesson-copy {
  min-width: 0;
}

.lesson-copy p,
.lesson-copy li {
  color: #3e4b46;
}

.lesson-copy ul {
  padding-left: 22px;
}

.code-example {
  overflow: auto;
  margin: 16px 0;
  padding: 16px 18px;
  border: 1px solid #24332e;
  border-radius: 7px;
  background: var(--code-bg);
  color: #e8f2ed;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre;
}

.lesson-code-demo {
  overflow: hidden;
  margin: 16px 0;
  border: 1px solid var(--code-line);
  border-radius: 7px;
  background: var(--code-bg);
}

.lesson-code-demo .code-example {
  margin: 0;
  border: 0;
  border-radius: 0;
}

.lesson-code-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
  justify-content: space-between;
  padding: 11px 12px;
  border-top: 1px solid var(--code-line);
  background: #17231f;
}

.example-input-field {
  flex: 1 1 260px;
  color: #d9e8e1;
  font-size: 0.74rem;
  font-weight: 700;
}

.example-input-field span {
  display: block;
  margin-bottom: 5px;
}

.example-input-field textarea {
  width: 100%;
  min-height: 70px;
  padding: 8px 10px;
  resize: vertical;
  border: 1px solid #3f584e;
  border-radius: 5px;
  background: #0e1714;
  color: #edf7f2;
  font-family: Consolas, "Courier New", monospace;
  line-height: 1.45;
}

.example-run-button {
  min-width: 172px;
  background: #d9f7ff;
  color: #075b73;
}

.example-run-button:hover {
  background: #bcefff;
}

.example-output {
  padding: 12px 14px 14px;
  border-top: 1px solid var(--code-line);
  background: #0e1714;
  color: #dff8ec;
}

.example-output.is-error {
  color: #ffaaa0;
}

.example-output strong {
  display: block;
  margin-bottom: 6px;
  color: #8bdabb;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.example-output pre {
  overflow: auto;
  margin: 0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.code-example .code-keyword {
  color: #ffad91;
}

.inline-code,
code {
  font-family: Consolas, "Courier New", monospace;
}

.lesson-copy code:not(.code-example code),
.reference-card code {
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--surface-soft);
  color: var(--green-900);
}

.callout {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: start;
  margin: 16px 0;
  padding: 13px 14px;
  border: 1px solid #bcd2c6;
  border-radius: 6px;
  background: #f0f7f3;
}

.callout.is-warning {
  border-color: #ead48c;
  background: var(--yellow-soft);
}

.callout p {
  margin: 0;
}

.quick-check {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.quick-check h3 {
  margin-bottom: 8px;
}

.answer-options {
  display: grid;
  gap: 8px;
  margin: 15px 0;
}

.answer-option {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

.answer-option:hover {
  border-color: #9ab8aa;
  background: var(--surface-soft);
}

.answer-option input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
}

.feedback {
  display: none;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 6px;
}

.feedback.is-visible {
  display: block;
}

.feedback.is-success {
  background: #def2e6;
  color: #215c3d;
}

.feedback.is-error {
  background: #fde8e8;
  color: #8f3030;
}

.exercise-story {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.9fr);
  gap: clamp(18px, 4vw, 40px);
  align-items: center;
  margin: 4px 0 18px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid #b8d7c8;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #edf7f2 0%, #e3f1ea 100%);
  box-shadow: var(--shadow-sm);
}

.exercise-story--image {
  grid-template-columns: minmax(0, 1fr) minmax(360px, 1.15fr);
}

:root[data-theme="dark"] .exercise-story {
  border-color: #315f4b;
  background: linear-gradient(135deg, #17362a 0%, #142c24 100%);
}

.exercise-story-text h2 {
  margin: 4px 0 10px;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
}

.exercise-story-text p {
  margin: 0 0 10px;
  color: var(--ink);
}

.exercise-story-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  gap: 8px;
  margin: 16px 0 12px;
  padding: 0;
  list-style: none;
}

.exercise-story-facts li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid rgba(45, 138, 104, 0.25);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.58);
}

.exercise-story-facts strong {
  color: var(--green-700);
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.12rem;
}

.exercise-story-facts span {
  min-width: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

:root[data-theme="dark"] .exercise-story-facts li {
  border-color: rgba(112, 210, 163, 0.24);
  background: rgba(5, 24, 19, 0.38);
}

:root[data-theme="dark"] .exercise-story-facts strong {
  color: #8ee0b5;
}

.exercise-story-video {
  margin-top: 6px;
}

.exercise-story-video svg {
  color: #c4302b;
}

.exercise-story-source {
  display: inline-flex;
  margin-top: 7px;
}

.exercise-story-illustration {
  display: grid;
  place-items: center;
  padding: 16px;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.exercise-story-illustration svg {
  width: 100%;
  height: auto;
  max-width: 280px;
}

.exercise-story-illustration--image {
  overflow: hidden;
  padding: 0;
  background: #071b2d;
}

.exercise-story-illustration--image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1672 / 936;
  object-fit: cover;
}

.exercise-workspace {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(460px, 1.3fr);
  gap: 16px;
  align-items: start;
}

.exercise-brief {
  position: sticky;
  top: 102px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.exercise-brief h2 {
  font-size: 1.65rem;
}

.exercise-brief ol,
.exercise-brief ul {
  padding-left: 21px;
}

.exercise-brief li {
  margin-bottom: 6px;
  color: #3e4b46;
}

.editor-shell {
  overflow: hidden;
  border: 1px solid #24332e;
  border-radius: 7px;
  background: var(--code-bg);
  box-shadow: var(--shadow);
}

.editor-toolbar {
  min-height: 48px;
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--code-line);
  color: #dae5df;
}

.editor-toolbar strong {
  margin-right: auto;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.82rem;
}

.editor-toolbar .icon-button {
  color: #d8e4de;
}

.editor-toolbar .icon-button:hover {
  border-color: #40514a;
  background: #25332e;
}

.code-editor {
  width: 100%;
  min-height: 340px;
  display: block;
  padding: 18px;
  border: 0;
  border-radius: 0;
  outline: 0;
  resize: vertical;
  background: var(--code-bg);
  color: #edf6f1;
  caret-color: var(--yellow);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92rem;
  line-height: 1.6;
  tab-size: 4;
}

.code-editor:focus {
  box-shadow: inset 0 0 0 2px var(--blue);
}

.runner-panel {
  border-top: 1px solid var(--code-line);
}

.runner-tabs {
  display: flex;
  border-bottom: 1px solid var(--code-line);
}

.runner-tab {
  min-height: 38px;
  padding: 7px 13px;
  border: 0;
  border-right: 1px solid var(--code-line);
  background: #17221e;
  color: #aebdb6;
  cursor: pointer;
}

.runner-tab.is-active {
  background: #222e29;
  color: #fff;
}

.runner-content {
  display: none;
  min-height: 120px;
}

.runner-content.is-active {
  display: block;
}

.console-output {
  min-height: 150px;
  max-height: 310px;
  overflow: auto;
  margin: 0;
  padding: 15px 18px;
  color: #d9e8e0;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.console-output.is-error {
  color: #ffaaa0;
}

.input-area {
  width: 100%;
  min-height: 150px;
  display: block;
  padding: 15px 18px;
  border: 0;
  outline: 0;
  resize: vertical;
  background: #17221e;
  color: #d9e8e0;
  font-family: Consolas, "Courier New", monospace;
}

.editor-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--code-line);
  background: #17221e;
}

.editor-actions .button-secondary {
  border-color: #41514a;
  background: #24322d;
  color: #fff;
}

.result-banner {
  display: none;
  margin-top: 14px;
  padding: 15px;
  border-radius: 7px;
}

.result-banner.is-visible {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
}

.result-banner.is-success {
  background: #def2e6;
  color: #215c3d;
}

.result-banner.is-error {
  background: #fde8e8;
  color: #8f3030;
}

.result-banner svg {
  width: 23px;
  height: 23px;
}

.learning-coach {
  margin-top: 14px;
  padding: 18px;
  border: 1px solid #b8d2e5;
  border-radius: 7px;
  background: #f1f8fd;
}

.learning-coach-heading {
  display: flex;
  gap: 11px;
  align-items: center;
  margin-bottom: 9px;
}

.learning-coach-heading .eyebrow,
.learning-coach-heading h3 {
  margin: 0;
}

.learning-coach-heading h3 {
  font-size: 1.08rem;
}

.learning-coach-icon {
  width: 40px;
  height: 40px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: #d9eefb;
  color: #205f8d;
}

.local-check-badge {
  min-height: 28px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  margin-left: auto;
  padding: 4px 9px;
  border: 1px solid #a8c8db;
  border-radius: 999px;
  background: #fff;
  color: #285c7a;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.local-check-badge svg,
.ai-setup-note svg,
.ai-privacy-note svg {
  width: 16px;
  height: 16px;
}

.learning-coach > p {
  margin: 0;
  color: #425a68;
}

.ai-mode-switch {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  gap: 11px;
  align-items: center;
  margin-top: 15px;
  padding: 12px 13px;
  border: 1px solid #c8c4e8;
  border-radius: var(--radius-sm);
  background: #fbfaff;
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.ai-mode-switch.is-active {
  border-color: #8d83d3;
  background: linear-gradient(135deg, #f3f0ff 0%, #edf4ff 100%);
  box-shadow: 0 6px 18px rgba(83, 72, 164, 0.11);
}

.ai-mode-switch.is-unavailable {
  border-color: var(--line);
  background: var(--surface-soft);
}

.ai-mode-symbol {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #ece9ff;
  color: #5f55bb;
}

.ai-mode-switch.is-active .ai-mode-symbol {
  background: #5f55bb;
  color: #fff;
}

.ai-mode-switch.is-unavailable .ai-mode-symbol {
  background: var(--surface);
  color: var(--muted);
}

.ai-mode-switch strong,
.ai-mode-switch small {
  display: block;
}

.ai-mode-switch strong {
  color: var(--ink);
}

.ai-mode-switch strong span {
  color: #665bc0;
}

.ai-mode-switch small {
  margin-top: 2px;
  color: var(--muted);
  line-height: 1.4;
}

.ai-mode-toggle {
  position: relative;
  width: 48px;
  height: 28px;
  padding: 0;
  border: 1px solid #a9b5af;
  border-radius: 999px;
  background: #dce3df;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease;
}

.ai-mode-toggle span {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 5px rgba(23, 32, 28, 0.24);
  transition: transform 160ms ease;
}

.ai-mode-switch.is-active .ai-mode-toggle {
  border-color: #5f55bb;
  background: #5f55bb;
}

.ai-mode-switch.is-active .ai-mode-toggle span {
  transform: translateX(20px);
}

.ai-mode-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(95, 85, 187, 0.24);
}

.learning-coach-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 14px;
}

.button-ai {
  background: #5f55bb;
  color: #fff;
}

.button-ai:hover {
  background: #4d44a2;
}

.ai-setup-note {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  color: #5e7068;
  font-size: 0.82rem;
}

.ai-privacy-note {
  display: flex;
  gap: 7px;
  align-items: flex-start;
  margin-top: 12px !important;
  font-size: 0.78rem;
}

.coach-feedback {
  margin-top: 14px;
  padding: 13px 14px;
  border: 1px solid #abc9dc;
  border-radius: 6px;
  background: #fff;
  color: #203b4b;
}

.coach-feedback.is-success {
  border-color: #9cc8ae;
  background: #ecf8f1;
  color: #215c3d;
}

.coach-feedback.is-warning {
  border-color: #dbc77c;
  background: #fff9e7;
  color: #67510f;
}

.coach-feedback.is-ai {
  border-color: #b8b1e7;
  background: #f5f3ff;
  color: #403875;
}

.coach-feedback p,
.coach-feedback ul {
  margin: 7px 0 0;
}

.coach-feedback ul {
  padding-left: 20px;
}

.coach-feedback li + li {
  margin-top: 4px;
}

.coach-feedback small {
  display: block;
  margin-top: 10px;
  opacity: 0.78;
}

.coach-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(64, 56, 117, 0.18);
}

.coach-actions-note {
  margin: 0 !important;
}

.achievement-card {
  min-height: 210px;
}

.achievement-card.is-locked {
  opacity: 0.62;
}

.achievement-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--yellow-soft);
  color: #795700;
}

.achievement-card.is-locked .achievement-icon {
  background: var(--surface-soft);
  color: var(--muted);
}

.achievement-status {
  margin-top: auto;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.reference-card {
  min-height: 250px;
}

.reference-card pre {
  overflow: auto;
  margin: auto 0 0;
  padding: 12px;
  border-radius: 6px;
  background: var(--code-bg);
  color: #e8f2ed;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  white-space: pre;
}

.commands-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  padding: clamp(24px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--line);
}

.commands-lead > div:first-child {
  max-width: 790px;
}

.command-progress {
  display: grid;
  gap: 9px;
  padding: 22px;
  border-radius: 8px;
  background: var(--green-900);
  color: #fff;
}

.command-progress strong {
  font-size: 2.5rem;
}

.command-progress small,
.command-progress span {
  color: rgba(255, 255, 255, 0.76);
}

.command-category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.command-card {
  gap: 9px;
  min-height: 270px;
}

.command-card > .command-category {
  max-width: calc(100% - 42px);
  color: var(--green-700);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.command-card code {
  overflow-wrap: anywhere;
  color: var(--green-900);
}

.command-card pre,
.command-syntax {
  overflow: auto;
  margin: 4px 0 0;
  padding: 12px;
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--green-900);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.8rem;
  line-height: 1.45;
  white-space: pre;
}

.command-detail {
  display: grid;
  gap: 18px;
}

.command-detail-header h2 code {
  overflow-wrap: anywhere;
  color: var(--green-900);
}

.command-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 16px;
  align-items: start;
}

.command-copy,
.command-example-panel {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.command-copy {
  display: grid;
  gap: 20px;
}

.command-copy h3,
.command-example-panel .eyebrow {
  margin-bottom: 8px;
}

.command-copy p,
.command-copy li {
  color: #3e4b46;
}

.command-copy ul {
  margin: 0;
  padding-left: 21px;
}

.command-example-panel {
  position: sticky;
  top: 102px;
}

.command-example-panel .code-example {
  margin: 0 0 18px;
}

.command-example-panel .command-syntax {
  margin-bottom: 18px;
}

.command-check {
  max-width: 920px;
}

.tools-band {
  padding: 22px 0 30px;
  border-bottom: 1px solid var(--line);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.tool-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 270px;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.tool-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 7px;
  background: var(--green-900);
  color: #fff;
}

.tool-icon svg {
  width: 21px;
  height: 21px;
}

.tool-item h3 {
  margin-bottom: 7px;
}

.tool-item p {
  color: #405149;
  font-size: 0.9rem;
}

.tool-item small {
  margin-bottom: 15px;
  color: var(--muted);
}

.tool-item .text-button {
  align-self: flex-start;
  margin-top: auto;
}

.tools-band > .callout {
  margin-top: 14px;
}

.empty-state {
  padding: 48px 24px;
  border: 1px dashed #aabbb2;
  border-radius: 7px;
  color: var(--muted);
  text-align: center;
}

.structure-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(250px, 0.6fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(24px, 4vw, 46px) 0;
  border-bottom: 1px solid var(--line);
}

.structure-lead > div:first-child {
  max-width: 790px;
}

.structure-progress-panel {
  display: grid;
  gap: 11px;
  padding: 22px;
  border-radius: 8px;
  background: var(--green-900);
  color: #fff;
}

.structure-progress-panel strong {
  font-size: 2.5rem;
}

.structure-progress-panel small,
.structure-progress-panel span {
  color: rgba(255, 255, 255, 0.76);
}

.structure-progress-panel .progress-track {
  background: rgba(255, 255, 255, 0.2);
}

.structure-progress-panel .progress-track span {
  background: var(--yellow);
}

.operator-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.operator-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.operator-item h3 {
  margin-bottom: 5px;
  font-size: 1rem;
}

.operator-item code {
  display: block;
  overflow-wrap: anywhere;
  color: var(--green-700);
  font-size: 0.8rem;
  font-weight: 700;
}

.operator-item p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.structure-example-list {
  display: grid;
  gap: 16px;
}

.structure-example {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.structure-example-heading {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  margin-bottom: 20px;
}

.structure-example-heading .module-number {
  margin: 0;
}

.structure-example-heading h3 {
  margin-bottom: 5px;
}

.structure-example-heading p {
  margin: 0;
  color: var(--muted);
}

.structure-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.compare-label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.structure-compare .code-example {
  min-height: 100%;
  margin: 0;
}

.stg-diagram {
  overflow: hidden;
  border: 2px solid #26332e;
  background: #fff;
  color: #17201c;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.83rem;
  line-height: 1.35;
}

.stg-statement {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-bottom: 1px solid #26332e;
  overflow-wrap: anywhere;
}

.stg-diagram > :last-child,
.stg-branch > :last-child,
.stg-loop-body > :last-child {
  border-bottom: 0;
}

.stg-decision {
  border-bottom: 1px solid #26332e;
}

.stg-decision-head {
  position: relative;
  min-height: 78px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 8px 14px 28px;
  overflow: hidden;
  text-align: center;
}

.stg-decision-head strong {
  position: relative;
  z-index: 2;
  max-width: 80%;
  font-weight: 700;
}

.stg-decision-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.stg-decision-lines line {
  fill: none;
  stroke: #26332e;
  stroke-width: 1.2px;
  vector-effect: non-scaling-stroke;
}

.stg-condition {
  display: inline-flex;
  gap: 3px;
  align-items: center;
  justify-content: center;
}

.stg-question-mark {
  flex: 0 0 auto;
}

.stg-branch-label {
  position: absolute;
  z-index: 2;
  bottom: 2px;
  font-size: 0.68rem;
  font-weight: 800;
}

.stg-branch-label.is-yes {
  left: 12px;
}

.stg-branch-label.is-no {
  right: 12px;
}

.stg-branches {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid #26332e;
}

.stg-branch {
  min-width: 0;
  border-right: 1px solid #26332e;
}

.stg-branch:last-child {
  border-right: 0;
}

.stg-branch.is-empty {
  min-height: 44px;
  display: grid;
  place-items: center;
  padding: 8px;
  color: var(--muted);
  font-style: italic;
}

.stg-branch .stg-decision,
.stg-branch .stg-loop {
  border-bottom: 0;
}

.stg-loop {
  padding: 0 10px 10px;
  border-bottom: 1px solid #26332e;
  background: #f7faf8;
}

.stg-loop-head {
  min-height: 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 2px;
}

.stg-loop-kind {
  color: var(--green-700);
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
}

.stg-loop-head strong {
  overflow-wrap: anywhere;
}

.stg-loop-body {
  margin-left: 14px;
  border: 1px solid #26332e;
  background: #fff;
}

.structure-slot {
  display: block;
  width: 100%;
}

.structure-slot select {
  width: 100%;
  min-height: 38px;
  padding: 6px 26px 6px 8px;
  border: 1px solid #8fa29a;
  border-radius: 5px;
  background: #fffdf3;
  color: var(--ink);
  font-size: 0.78rem;
}

.structure-slot-prefix {
  display: block;
  margin-bottom: 2px;
  color: #4c5b55;
  font-size: 0.67rem;
  font-weight: 700;
}

.stg-branch .stg-branch .structure-slot select {
  padding-right: 20px;
  padding-left: 4px;
  font-size: 0.68rem;
}

.structure-exercise-card .lesson-index {
  color: var(--coral);
}

.structure-tool-note {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: 34px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.structure-tool-note h2 {
  margin-bottom: 5px;
}

.structure-tool-note p:last-child {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
}

.structure-workspace {
  display: grid;
  grid-template-columns: minmax(270px, 0.65fr) minmax(500px, 1.35fr);
  gap: 18px;
  align-items: start;
  margin-top: 16px;
}

.structure-brief {
  position: sticky;
  top: 102px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
}

.structure-brief h2 {
  margin-top: 12px;
}

.structure-brief ol {
  padding-left: 22px;
}

.structure-brief li {
  margin-bottom: 7px;
  color: #3e4b46;
}

.structure-canvas-panel {
  min-width: 0;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #eef3f0;
}

.structure-canvas-heading {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.structure-canvas-heading h3 {
  margin: 0;
  font-size: 1.35rem;
}

.completion-chip {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 6px 9px;
  border-radius: 999px;
  background: #ddefe4;
  color: var(--success);
  font-size: 0.75rem;
  font-weight: 800;
}

.completion-chip svg {
  width: 16px;
  height: 16px;
}

.structure-canvas-panel > .stg-diagram {
  width: min(100%, 720px);
  margin: 0 auto;
  box-shadow: 0 10px 24px rgba(23, 63, 53, 0.08);
}

.structure-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

.order-workspace {
  display: grid;
  gap: 8px;
}

.order-block {
  min-height: 58px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 78px;
  gap: 10px;
  align-items: center;
  padding: 8px 9px;
  border: 2px solid #26332e;
  background: #fff;
}

.order-number {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 5px;
  background: var(--green-900);
  color: #fff;
  font-family: Consolas, "Courier New", monospace;
  font-weight: 800;
}

.order-controls {
  display: flex;
  gap: 2px;
  justify-content: flex-end;
}

.profile-dialog {
  width: min(480px, calc(100vw - 28px));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 30px 70px rgba(23, 32, 28, 0.28);
}

.profile-dialog::backdrop {
  background: rgba(16, 28, 23, 0.58);
}

.profile-dialog form {
  padding: 24px;
}

.dialog-heading {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.dialog-heading h2 {
  margin: 0;
}

.dialog-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--yellow-soft);
  color: #795700;
}

.profile-dialog label {
  display: block;
  margin: 18px 0 6px;
  font-weight: 750;
}

.profile-dialog input,
.profile-dialog textarea {
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid #aebbb4;
  border-radius: 6px;
  font: inherit;
}

.profile-dialog textarea {
  min-height: 132px;
  resize: vertical;
  line-height: 1.5;
}

.profile-dialog input:focus,
.profile-dialog textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(53, 119, 168, 0.15);
  outline: none;
}

.ai-consent-dialog {
  width: min(720px, calc(100vw - 28px));
  max-height: calc(100dvh - 28px);
  overflow-y: auto;
}

.ai-dialog-icon {
  background: #ece9ff;
  color: #5f55bb;
}

.compact-consent-list {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.compact-consent-list li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--muted);
}

.compact-consent-list svg {
  width: 19px;
  height: 19px;
  margin-top: 2px;
  color: #5f55bb;
}

.ai-consent-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.ai-consent-grid section {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.ai-consent-grid h3 {
  display: flex;
  gap: 7px;
  align-items: center;
  margin: 0 0 8px;
  font-size: 0.92rem;
}

.ai-consent-grid h3 svg {
  width: 18px;
  height: 18px;
  color: #5f55bb;
}

.ai-consent-grid ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 0.86rem;
}

.ai-consent-grid li + li {
  margin-top: 5px;
}

.ai-consent-warning {
  margin-top: 12px;
}

.ai-consent-warning a {
  color: inherit;
  font-weight: 750;
}

.ai-consent-footnote {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  margin-top: 22px;
}

.points-dialog {
  width: min(540px, calc(100vw - 28px));
  max-height: calc(100dvh - 28px);
  overflow-y: auto;
}

.points-list {
  display: grid;
  gap: 10px;
  margin: 16px 0 4px;
  padding: 0;
  list-style: none;
}

.points-list li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  align-items: start;
}

.points-list li > span {
  min-width: 0;
}

.points-list li svg {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--success);
}

.points-callout {
  margin-top: 16px;
}

.feedback-dialog {
  width: min(560px, calc(100vw - 28px));
  max-height: calc(100dvh - 28px);
  overflow-y: auto;
}

.feedback-dialog-icon {
  background: #e4f5ef;
  color: var(--green-700);
}

.feedback-dialog-hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.feedback-context {
  margin-top: 12px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.82rem;
}

.feedback-status {
  margin: 12px 0 0;
  padding: 9px 11px;
  border-radius: 7px;
  font-size: 0.88rem;
}

.feedback-status.is-success {
  background: #e7f8ef;
  color: #226240;
}

.feedback-status.is-error {
  background: #fff0f0;
  color: #8f3030;
}

.feedback-status.is-info {
  background: #eef7ff;
  color: #275978;
}

.backup-dialog {
  width: min(600px, calc(100vw - 28px));
  max-height: calc(100dvh - 28px);
  overflow-y: auto;
}

.backup-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0;
}

.backup-summary > div {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-soft);
  text-align: center;
}

.backup-summary strong,
.backup-summary small {
  display: block;
}

.backup-summary strong {
  color: var(--green-900);
  font-size: 1.08rem;
}

.backup-summary small {
  color: var(--muted);
  font-size: 0.72rem;
}

.backup-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.backup-action {
  min-width: 0;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 11px;
  align-items: center;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  text-align: left;
  cursor: pointer;
}

.backup-action:hover {
  border-color: var(--green-500);
  background: #f7fbf9;
}

.backup-action-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--green-900);
  color: #fff;
}

.backup-action strong,
.backup-action small {
  display: block;
}

.backup-action small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.backup-note {
  margin-top: 12px;
}

.toast-region {
  position: fixed;
  z-index: 100;
  right: 20px;
  bottom: 88px;
  width: min(380px, calc(100vw - 40px));
  display: grid;
  gap: 8px;
}

.site-feedback-button {
  position: fixed;
  z-index: 90;
  right: 20px;
  bottom: 20px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--green-600), #28788a);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 14px 32px rgba(13, 50, 41, 0.24);
  cursor: pointer;
}

.site-feedback-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 38px rgba(13, 50, 41, 0.3);
}

.site-feedback-button svg {
  width: 19px;
  height: 19px;
}

.site-feedback-button[hidden] {
  display: none;
}

.toast {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: start;
  padding: 13px 15px;
  border: 1px solid #b7d4c4;
  border-radius: 7px;
  background: #f0faf4;
  color: #215c3d;
  box-shadow: var(--shadow);
  animation: toast-in 180ms ease-out;
}

.toast.is-xp {
  border-color: #ead48c;
  background: var(--yellow-soft);
  color: #6c4c00;
}

.toast.is-error {
  border-color: #e7b4b4;
  background: #fff0f0;
  color: #8f3030;
}

:root[data-theme="dark"] a {
  color: var(--green-700);
}

:root[data-theme="dark"] .filter-button:hover,
:root[data-theme="dark"] .filter-button.is-active {
  background: #1f5f4e;
  color: #fff;
}

:root[data-theme="dark"] .nav-item.is-active,
:root[data-theme="dark"] .module-number,
:root[data-theme="dark"] .continue-progress,
:root[data-theme="dark"] .structure-progress-panel,
:root[data-theme="dark"] .command-progress,
:root[data-theme="dark"] .tool-icon,
:root[data-theme="dark"] .backup-action-icon,
:root[data-theme="dark"] .order-number {
  background: var(--green-grad);
  color: #fff;
}

:root[data-theme="dark"] .button-primary {
  background: linear-gradient(135deg, #36a37e 0%, #277a5d 60%, #1c5544 100%);
  color: #fff;
}

:root[data-theme="dark"] .button-primary:hover {
  background: linear-gradient(135deg, #3eb389 0%, #2c8767 60%, #20614d 100%);
}

:root[data-theme="dark"] .button-secondary,
:root[data-theme="dark"] .filter-button,
:root[data-theme="dark"] .backup-action {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

:root[data-theme="dark"] .button-secondary:hover,
:root[data-theme="dark"] .icon-button:hover,
:root[data-theme="dark"] .backup-action:hover {
  background: var(--surface-soft);
}

:root[data-theme="dark"] .nav-item:hover {
  background: #29423a;
  color: #fff;
}

:root[data-theme="dark"] .achievement-icon,
:root[data-theme="dark"] .dialog-icon {
  color: #f3cf6a;
  background: #3a321a;
}

:root[data-theme="dark"] .stat-icon,
:root[data-theme="dark"] .stat-icon.is-yellow,
:root[data-theme="dark"] .stat-icon.is-coral,
:root[data-theme="dark"] .stat-icon.is-blue {
  color: #fff;
}

:root[data-theme="dark"] .structure-promo,
:root[data-theme="dark"] .structure-canvas-panel {
  border-color: var(--line);
  background: #15251f;
}

:root[data-theme="dark"] .competency-lead {
  border-color: #315f4b;
  background: linear-gradient(135deg, #142a21 0%, #10221c 100%);
}

:root[data-theme="dark"] .competency-card.is-complete {
  border-color: #3f9670;
  box-shadow: var(--shadow-sm), 0 0 0 1px rgba(86, 191, 145, 0.12);
}

:root[data-theme="dark"] .structure-promo p,
:root[data-theme="dark"] .structure-lead p,
:root[data-theme="dark"] .commands-lead p,
:root[data-theme="dark"] .lesson-copy p,
:root[data-theme="dark"] .lesson-copy li,
:root[data-theme="dark"] .command-copy p,
:root[data-theme="dark"] .command-copy li,
:root[data-theme="dark"] .exercise-brief li,
:root[data-theme="dark"] .structure-brief li,
:root[data-theme="dark"] .tool-item p {
  color: #b8cac1;
}

:root[data-theme="dark"] .difficulty-easy,
:root[data-theme="dark"] .lesson-state.is-done,
:root[data-theme="dark"] .feedback.is-success,
:root[data-theme="dark"] .result-banner.is-success,
:root[data-theme="dark"] .completion-chip,
:root[data-theme="dark"] .toast {
  border-color: #315f45;
  background: #173625;
  color: #8ee0ab;
}

:root[data-theme="dark"] .difficulty-medium {
  border-color: #315f7c;
  background: var(--medium-blue-soft);
  color: var(--medium-blue);
}

:root[data-theme="dark"] .toast.is-xp {
  border-color: #66501f;
  background: #3a321a;
  color: #f3cf6a;
}

:root[data-theme="dark"] .difficulty-plus {
  border-color: #28788a;
  background: var(--plus-blue-soft);
  color: var(--plus-blue);
}

:root[data-theme="dark"] .difficulty-extra {
  border-color: #5a4290;
  background: #241a3a;
  color: #c4aef0;
}

:root[data-theme="dark"] .feedback.is-error,
:root[data-theme="dark"] .result-banner.is-error,
:root[data-theme="dark"] .toast.is-error {
  border-color: #6b312e;
  background: #3a211d;
  color: #ffaaa0;
}

:root[data-theme="dark"] .learning-coach {
  border-color: #31566d;
  background: #152a36;
}

:root[data-theme="dark"] .learning-coach-icon {
  background: #1e4055;
  color: #9bd3ff;
}

:root[data-theme="dark"] .ai-mode-switch {
  border-color: #4f4a75;
  background: #1c2130;
}

:root[data-theme="dark"] .ai-mode-switch.is-active {
  border-color: #756bbe;
  background: linear-gradient(135deg, #292642 0%, #202b40 100%);
  box-shadow: 0 8px 22px rgba(8, 10, 20, 0.24);
}

:root[data-theme="dark"] .ai-mode-switch.is-unavailable {
  border-color: #31423a;
  background: #14211c;
}

:root[data-theme="dark"] .ai-mode-symbol {
  background: #39345f;
  color: #d8d4ff;
}

:root[data-theme="dark"] .ai-mode-switch.is-unavailable .ai-mode-symbol {
  background: #1d2c25;
  color: #9cb1a7;
}

:root[data-theme="dark"] .ai-mode-switch strong span {
  color: #c4bcff;
}

:root[data-theme="dark"] .ai-mode-toggle {
  border-color: #56635c;
  background: #35433c;
}

:root[data-theme="dark"] .learning-coach > p,
:root[data-theme="dark"] .ai-setup-note,
:root[data-theme="dark"] .ai-privacy-note {
  color: #b4cad6;
}

:root[data-theme="dark"] .local-check-badge {
  border-color: #3f657a;
  background: #10212a;
  color: #a8d6ef;
}

:root[data-theme="dark"] .coach-feedback {
  border-color: #3d6379;
  background: #10212a;
  color: #c8e0ec;
}

:root[data-theme="dark"] .coach-feedback.is-success {
  border-color: #315f45;
  background: #173625;
  color: #9de2b7;
}

:root[data-theme="dark"] .coach-feedback.is-warning {
  border-color: #66501f;
  background: #362d17;
  color: #f0d77f;
}

:root[data-theme="dark"] .coach-feedback.is-ai {
  border-color: #5c5593;
  background: #292642;
  color: #d8d4ff;
}

:root[data-theme="dark"] .callout.is-warning {
  background: #362d17;
}

:root[data-theme="dark"] .objectives-band {
  border-color: #315f4b;
  border-left-color: #56bf91;
  background: linear-gradient(135deg, #17362a 0%, #142c24 100%);
}

:root[data-theme="dark"] .lesson-detail.difficulty-page-medium .objectives-band {
  border-color: #315f7c;
  border-left-color: #5ba8df;
  background: var(--medium-blue-soft);
}

:root[data-theme="dark"] .lesson-detail.difficulty-page-plus .objectives-band {
  border-color: #28788a;
  border-left-color: #31c9e4;
  background: var(--plus-blue-soft);
}

:root[data-theme="dark"] .callout {
  border-color: #37584a;
  background: #172a22;
}

:root[data-theme="dark"] .profile-dialog {
  background: var(--surface);
  color: var(--ink);
}

:root[data-theme="dark"] .profile-dialog input,
:root[data-theme="dark"] .profile-dialog textarea,
:root[data-theme="dark"] .structure-slot select {
  border-color: var(--line);
  background: #111a17;
  color: var(--ink);
}

:root[data-theme="dark"] .compact-consent-list li,
:root[data-theme="dark"] .feedback-dialog-hint,
:root[data-theme="dark"] .feedback-context {
  color: var(--muted);
}

:root[data-theme="dark"] .feedback-context {
  border-color: var(--line);
  background: var(--surface-soft);
}

:root[data-theme="dark"] .feedback-status.is-success {
  background: #173625;
  color: #a7efbd;
}

:root[data-theme="dark"] .feedback-status.is-error {
  background: #3a1f1d;
  color: #ffb7ad;
}

:root[data-theme="dark"] .feedback-status.is-info {
  background: #132b3a;
  color: #a8daf5;
}

:root[data-theme="dark"] .backup-summary > div,
:root[data-theme="dark"] .command-copy,
:root[data-theme="dark"] .command-example-panel,
:root[data-theme="dark"] .empty-state {
  border-color: var(--line);
  background: var(--surface-soft);
}

:root[data-theme="dark"] .backup-summary strong,
:root[data-theme="dark"] .lesson-copy code:not(.code-example code),
:root[data-theme="dark"] .command-card code,
:root[data-theme="dark"] .command-detail-header h2 code,
:root[data-theme="dark"] .reference-card code {
  color: var(--green-700);
}

:root[data-theme="dark"] .command-card pre,
:root[data-theme="dark"] .command-syntax {
  color: #bcefd7;
  background: #111a17;
}

:root[data-theme="dark"] .empty-state {
  color: var(--muted);
}

:root[data-theme="dark"] .stg-diagram,
:root[data-theme="dark"] .stg-loop-body,
:root[data-theme="dark"] .order-block {
  background: #f7faf8;
  color: #17201c;
}

:root[data-theme="dark"] .stg-loop {
  background: #eef3f0;
}

:root[data-theme="dark"] .workbook-hero {
  border-color: #315f4b;
  background:
    linear-gradient(135deg, #162a22 0%, #121f1a 68%),
    var(--surface);
}

:root[data-theme="dark"] .workbook-hero-note,
:root[data-theme="dark"] .workbook-card,
:root[data-theme="dark"] .workbook-bridge {
  border-color: var(--line);
  background: var(--surface);
}

:root[data-theme="dark"] .workbook-card-icon {
  background: #132b3a;
  color: #8ed4f2;
}

@keyframes toast-in {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
}

.mobile-backdrop {
  display: none;
}

@media (max-width: 1080px) {
  .module-grid,
  .lesson-grid,
  .exercise-grid,
  .achievement-grid,
  .command-grid,
  .reference-grid,
  .workbook-grid,
  .tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .exercise-workspace {
    grid-template-columns: 1fr;
  }

  .exercise-story {
    grid-template-columns: 1fr;
  }

  .exercise-story-illustration {
    order: -1;
  }

  .exercise-brief,
  .command-example-panel,
  .structure-brief {
    position: static;
  }

  .structure-workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    transform: translateX(-105%);
    box-shadow: 20px 0 50px rgba(23, 32, 28, 0.18);
    transition: transform 180ms ease;
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  .page-column {
    min-width: 0;
  }

  .mobile-menu-button {
    display: inline-grid;
  }

  .topbar {
    grid-template-columns: 38px minmax(0, 1fr) auto;
    padding-inline: 14px;
  }

  .runtime-chip span:last-child {
    display: none;
  }

  .runtime-chip {
    width: 38px;
    justify-content: center;
  }

  .mobile-backdrop {
    position: fixed;
    z-index: 35;
    inset: 0;
    background: rgba(16, 28, 23, 0.45);
  }

  .mobile-backdrop.is-visible {
    display: block;
  }

  .continue-band {
    grid-template-columns: 1fr;
  }

  .structure-promo,
  .structure-lead,
  .workbook-hero,
  .workbook-bridge,
  .commands-lead,
  .command-detail-grid,
  .competency-lead {
    grid-template-columns: 1fr;
  }

  .workbook-bridge-actions {
    justify-content: flex-start;
  }

  .structure-promo-preview {
    width: 100%;
    justify-self: stretch;
  }

  .lesson-section {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .lesson-section h3 {
    position: static;
  }
}

@media (max-width: 620px) {
  #mainContent {
    padding-inline: 14px;
  }

  .portal-footer {
    align-items: flex-end;
    flex-direction: column;
    padding-inline: 14px;
  }

  .topbar-actions {
    gap: 5px;
  }

  .points-chip {
    padding-inline: 8px;
  }

  .runtime-chip {
    display: none;
  }

  .hero-band {
    min-height: 390px;
    align-items: flex-end;
    padding: 24px 18px;
    background-position: 62% center;
  }

  .hero-band h2 {
    font-size: 2.2rem;
  }

  .stats-grid,
  .module-grid,
  .lesson-grid,
  .exercise-grid,
  .achievement-grid,
  .command-grid,
  .reference-grid,
  .workbook-grid,
  .operator-grid,
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .competency-grid {
    grid-template-columns: 1fr;
  }

  .ai-consent-grid {
    grid-template-columns: 1fr;
  }

  .ai-mode-switch {
    grid-template-columns: 36px minmax(0, 1fr) auto;
    padding-inline: 11px;
  }

  .structure-compare {
    grid-template-columns: 1fr;
  }

  .structure-tool-note,
  .structure-canvas-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .structure-tool-note .button {
    width: 100%;
  }

  .structure-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .structure-actions .button {
    width: 100%;
  }

  .structure-canvas-panel {
    padding: 14px;
  }

  .stg-diagram {
    font-size: 0.73rem;
  }

  .stg-decision-head {
    min-height: 88px;
  }

  .stg-decision-head strong {
    max-width: 92%;
  }

  .stg-branches {
    grid-template-columns: 1fr;
  }

  .stg-branch {
    border-right: 0;
    border-bottom: 1px solid #26332e;
  }

  .stg-branch:last-child {
    border-bottom: 0;
  }

  .stg-branch::before {
    display: block;
    padding: 3px 8px;
    border-bottom: 1px solid #b7c2bd;
    background: #eef3f0;
    color: var(--green-700);
    content: "Ja";
    font-size: 0.64rem;
    font-weight: 800;
    text-transform: uppercase;
  }

  .stg-branch:nth-child(2)::before {
    content: "Nein";
  }

  .structure-slot select {
    min-height: 42px;
    font-size: 0.72rem;
  }

  .order-block {
    grid-template-columns: 30px minmax(0, 1fr) 74px;
    font-size: 0.82rem;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .dialog-actions,
  .hero-actions,
  .editor-actions,
  .learning-coach-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .dialog-actions .button,
  .hero-actions .button,
  .editor-actions .button,
  .learning-coach-actions .button {
    width: 100%;
  }

  .site-feedback-button {
    right: 14px;
    bottom: 14px;
    min-height: 44px;
    padding: 0 13px;
  }

  .toast-region {
    right: 14px;
    bottom: 76px;
    width: min(360px, calc(100vw - 28px));
  }

  .learning-coach-heading {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .local-check-badge {
    margin-left: 0;
  }

  .code-editor {
    min-height: 300px;
    font-size: 0.84rem;
  }

  .lesson-code-controls,
  .lesson-code-controls .button {
    width: 100%;
  }

  .backup-actions {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .topbar {
    gap: 8px;
  }

  .topbar .eyebrow {
    display: none;
  }

  .points-chip {
    display: none;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}