/* ==========================================================================
   Camino Coaching Academy — Locked Chemical Code + Agentic-OS Design System
   Dark (Default #07090A) & Pit-Wall Daylight (html[data-theme="light"])
   ========================================================================== */

:root {
  --carbon: #07090A;
  --panel: #0E1524;
  --panel-inset: #0A0F1A;
  --hairline: #1C2430;
  --ink: #F3F1EA;
  --body: #9AA6B2;
  --teal: #00FFD1;
  --teal-thread: #00FFD1;
  --on-teal: #07090A;
  --red: #FF3B3B;
  --green: #22E07A;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 32px;
  --space-4: 40px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 999px;

  --font-display: 'Saira Condensed', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Saira', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

html[data-theme="light"] {
  --carbon: #F4F5F7;
  --panel: #FFFFFF;
  --panel-inset: #ECEFF3;
  --hairline: #D5DCE4;
  --ink: #0B111A;
  --body: #4A5868;
  --teal: #007A63;
  --teal-thread: #00FFD1;
  --on-teal: #07090A;
  --red: #D92D20;
  --green: #15803D;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  background-color: var(--carbon);
  color: var(--body);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  border-top: 2px solid var(--teal-thread);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.15s ease, color 0.15s ease;
}

/* Header & Navigation */
header.app-header {
  background-color: var(--carbon);
  border-bottom: 1px solid var(--hairline);
  padding: 0 var(--space-3);
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 40;
}

.chem-header-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.brand, .chem-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.chem-visor {
  width: 24px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.chem-visor svg {
  width: 100%;
  height: 100%;
  display: block;
}

.chem-wordmark, .brand > span:last-child {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
}

nav.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

nav.main-nav a {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--body);
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

nav.main-nav a:hover,
nav.main-nav a[aria-current="page"] {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

/* Theme Toggle Switch (Agentic-OS Pattern) */
.chem-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 12px;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.chem-theme-toggle:hover {
  border-color: var(--teal);
}

.chem-theme-toggle .chem-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--teal-thread);
  flex-shrink: 0;
}

html[data-theme="light"] .chem-theme-toggle .chem-dot {
  background-color: var(--teal);
}

/* Pulse Dot & Eyebrow */
.chem-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--teal);
  display: inline-block;
  flex-shrink: 0;
}

.chem-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}

/* Main Container */
.container.academy-main {
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 64px;
  flex: 1;
}

.auth-wrap {
  max-width: 440px;
  margin: 4rem auto;
}

/* Typography Hierarchy */
.academy-main h1,
.auth-wrap h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 3.8vw, 3rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 12px;
}

.academy-main h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 32px 0 16px;
}

.chem-sec-num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--teal);
  display: inline-block;
  margin-right: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid transparent;
  box-shadow: none;
  text-decoration: none;
  transition: opacity 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.btn[hidden] {
  display: none !important;
}

.btn-primary {
  background-color: var(--teal-thread);
  color: var(--on-teal);
  border-color: var(--teal-thread);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--teal-thread);
  color: var(--on-teal);
  opacity: 0.9;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background-color: var(--panel);
  color: var(--ink);
  border: 1px solid var(--hairline);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--teal);
  color: var(--teal);
  background-color: var(--panel);
  transform: none;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.retry {
  margin-top: 16px;
}

/* Status Banners & Identity Pill */
#status {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 16px;
}

#status:empty {
  display: none;
}

#status:not(:empty) {
  display: inline-block;
  padding: 8px 14px;
  background-color: var(--panel);
  border: 1px solid var(--teal);
  border-radius: var(--radius-sm);
}

#who {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 24px;
}

#readonly-note,
.padlock {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--body);
}

/* Course Library Hero & Grid (/courses) */
.chem-library-hero {
  background-color: #07090A;
  background-image: linear-gradient(90deg, rgba(7, 9, 10, 0.84) 0%, rgba(7, 9, 10, 0.34) 100%), url('/images/track-bg.jpg');
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-md);
  padding: 40px 36px;
  margin-bottom: 36px;
}

.chem-library-hero h1 {
  color: #F3F1EA;
  margin: 0 0 8px;
}

.chem-library-hero #who {
  color: #00FFD1;
  margin: 0;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.course-card-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.course-card-wrap > .course-card {
  flex: 1 1 auto;
}

.course-card-wrap > .btn {
  align-self: flex-start;
}

.card,
.course-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-md);
  padding: 0;
  min-height: 356px;
  height: 100%;
  overflow: hidden;
  color: var(--body);
  text-decoration: none;
  box-shadow: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.chem-card-poster,
.course-card-media {
  width: 100%;
  height: 184px;
  flex: 0 0 184px;
  background-color: var(--panel-inset);
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
  position: relative;
}

.chem-card-poster img,
.course-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
  transition: transform 0.25s ease;
}

.course-card.coming-soon .course-card-img {
  object-position: center top;
}

/* focused-cover:start - Focused Rider / Driver artwork only. Keeps the whole waveform and orange dot inside the 184px frame at narrow card widths; #020202 is the artwork's own edge colour, so no bars show. */
.course-card-img[src^="/assets/posters/focused-rider.jpg"],
.course-card-img[src^="/assets/posters/focused-driver.jpg"] {
  object-fit: contain;
  background-color: #020202;
}
/* focused-cover:end */
/* deck-frame:start — Focused deck players sit in a 16:9 box with overflow hidden. The generic lesson iframe
   min-height (540px) made the deck taller than its box below a 960px column, clipping its play/caption bar. */
.lesson-narrative iframe[src^="/decks/"] {
  min-height: 0;
}
/* deck-frame:end */

.coming-soon-status {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(0, 212, 160, 0.14);
  border: 1px solid var(--teal);
  color: var(--teal);
  font-weight: 700;
  letter-spacing: 0.14em;
  margin: 0;
}

a.course-card:hover .course-card-img {
  transform: scale(1.03);
}

.chem-card-body,
.course-card-body {
  padding: 16px 20px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 1;
  min-height: 0;
}

a.course-card:hover {
  border-color: var(--teal);
  transform: translateY(-2px);
}

.course-card h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.32rem;
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card p {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.88rem;
  line-height: 1.4;
  color: var(--body);
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 0 1 auto;
}

.course-card .btn {
  align-self: flex-start;
  height: 36px;
  padding: 0 16px;
  font-size: 0.9rem;
  margin-top: auto;
}

.course-card.locked {
  border-top-color: var(--hairline);
  opacity: 0.72;
}

.course-card.locked .padlock {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--hairline);
  display: block;
  -webkit-line-clamp: unset;
}

.course-card.locked .padlock.coming-soon-status {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 6px 14px;
  margin-top: auto;
  border-top: 1px solid var(--teal);
  border-radius: 999px;
  background: rgba(0, 212, 160, 0.14);
  color: var(--teal);
}

.upgrade-modules-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3px 12px;
  margin: 4px 0 10px;
  padding-left: 16px;
  font-size: 0.76rem;
  line-height: 1.3;
  color: var(--body);
}

.course-card.locked .btn {
  margin-top: 10px;
}

@media (max-width: 960px) {
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .course-grid {
    grid-template-columns: 1fr;
  }
  .card,
  .course-card {
    aspect-ratio: auto;
    height: auto;
    min-height: 0;
    overflow: visible;
  }
  .chem-card-poster,
  .course-card-media {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }
}

.course-hero-img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  display: block;
}

/* Welcome Course Home (/courses/:slug) */
article#home {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.chem-welcome-hero {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}

#description {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--body);
  max-width: 760px;
  margin-bottom: 20px;
}

#welcomeMedia:not(:empty) {
  margin: 16px 0 24px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #000;
}

#completion:not(:empty) {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 8px;
}

.chem-continue-panel {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: 24px var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.chem-continue-panel[hidden] {
  display: none;
}

.chem-continue-panel h2 {
  margin: 0 0 6px;
  font-size: 1.35rem;
}

#position {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.82rem;
  color: var(--body);
  margin: 0;
}

.module-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.module-list li {
  padding: 18px 20px;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.96rem;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.module-list li:last-child {
  border-bottom: 1px solid var(--hairline);
}

/* Lesson Workspace (/courses/:slug/modules/:m/lessons/:l) */
.chem-lesson-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.chem-rail-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--body);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  cursor: pointer;
}

.chem-rail-toggle:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.chem-lesson-workspace {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.chem-lesson-workspace.rail-collapsed {
  grid-template-columns: minmax(0, 1fr);
}

.chem-lesson-workspace.rail-collapsed #rail {
  display: none;
}

aside#rail {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 112px);
  overflow-y: auto;
}

aside#rail:empty {
  display: none;
}

.chem-rail-head {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline);
}

.chem-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chem-rail-item {
  font-family: var(--font-body);
  font-size: 0.86rem;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--body);
  border-left: 2px solid transparent;
}

.chem-rail-item.active {
  background-color: var(--panel-inset);
  color: var(--ink);
  border-left-color: var(--teal);
  font-weight: 500;
}

.chem-lesson-stage {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

video.lesson-video {
  width: 100%;
  background: #000;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  display: block;
}

#media:not(:empty) {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

#media > p {
  padding: 20px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
}

.lesson-resources {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.lesson-resources:empty {
  display: none;
}

.lesson-resources a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--teal);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  text-decoration: none;
}

.lesson-resources a:hover {
  border-color: var(--teal);
}

#story:not(:empty) {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 28px;
  color: var(--ink);
}

.lesson-narrative {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
}

.lesson-narrative iframe {
  width: 100%;
  min-height: 540px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
}

#action:not(:empty) {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.action-card-item h4 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 6px;
}

#saved:not(:empty) {
  padding: 12px 16px;
  background-color: var(--panel);
  border: 1px solid var(--teal);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink);
}

form#quiz:not([hidden]) {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

form#quiz fieldset {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  background-color: var(--panel-inset);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

form#quiz legend {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
  padding: 0 6px;
}

form#quiz label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--body);
  cursor: pointer;
}

form#quiz textarea {
  width: 100%;
  min-height: 96px;
  padding: 12px;
  background-color: var(--carbon);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font: inherit;
}

form#quiz textarea:focus {
  outline: none;
  border-color: var(--teal);
}

.lesson-message-box {
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}
.message-team-address { color: var(--ink); font-size: 0.9rem; }
#teamAddress { font-family: var(--font-mono); user-select: all; }
#copyTeamStatus { font-family: var(--font-mono); font-size: 0.82rem; color: var(--teal); }

/* Worksheet (/worksheet) */
form#sections {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 24px 0;
}

form#sections section {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: 28px;
}

form#sections section h2 {
  margin-top: 0;
}

.worksheet-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}

.worksheet-field span {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}

.worksheet-field textarea,
.worksheet-field input {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.98rem;
  padding: 12px 14px;
  background-color: var(--panel-inset);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--ink);
  box-shadow: none;
}

.worksheet-field textarea:focus,
.worksheet-field input:focus {
  outline: none;
  border-color: var(--teal);
}

/* Account (/account) & Baseline (/baseline) */
.chem-account-panel,
.chem-baseline-panel {
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-top: 2px solid var(--teal-thread);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}

#email {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--teal);
  padding: 12px 16px;
  background-color: var(--panel-inset);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  display: inline-block;
  margin: 8px 0 16px;
}

ul#grants {
  list-style: none;
  margin: 12px 0 24px;
  padding: 0;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  background-color: var(--panel-inset);
}

ul#grants li {
  padding: 14px 18px;
  border-bottom: 1px solid var(--hairline);
  color: var(--ink);
  font-weight: 500;
}

ul#grants li:last-child {
  border-bottom: none;
}

@media (max-width: 920px) {
  .chem-lesson-workspace {
    grid-template-columns: 1fr;
  }

  aside#rail {
    position: static;
    max-height: none;
    order: 2;
  }
}

@media (max-width: 600px) {
  header.app-header {
    padding: 10px var(--space-2);
  }

  .container.academy-main {
    padding: 28px var(--space-2) 56px;
  }
}

/* Typeform-Standard One-Question-Per-Page Stage (100vh Gravitas) */
.one-question-wizard {
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
}

.one-question-progress-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 8px;
}

.one-question-counter {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.one-question-progress-bar {
  width: 100%;
  height: 4px;
  background-color: var(--hairline);
  border-radius: 999px;
  overflow: hidden;
}

.one-question-progress-fill {
  height: 100%;
  background-color: var(--teal);
  border-radius: 999px;
  transition: width 0.22s ease;
}

form#quiz fieldset.quiz-question-step {
  min-height: 62vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  padding: 36px 32px;
  background-color: var(--panel-inset);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
}

form#quiz fieldset.quiz-question-step[hidden] {
  display: none !important;
}

form#quiz fieldset.quiz-question-step legend.one-question-legend {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
  line-height: 1.18;
  color: var(--ink);
  margin-bottom: 12px;
  padding: 0;
}

.one-question-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

form#quiz label.one-question-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background-color: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

form#quiz label.one-question-option:hover,
form#quiz label.one-question-option.selected {
  border-color: var(--teal);
}

.one-question-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
}

.one-question-step-error {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #ff6b6b;
  margin: 0;
}

.one-question-step-error:empty {
  display: none;
}


/* Tap targets: at least 44px on phones and touch screens */
.btn-sm {
  min-height: 44px;
}

@media (max-width: 920px), (pointer: coarse) {
  nav.main-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  .chem-theme-toggle {
    height: 44px;
    min-width: 44px;
  }
  .course-card .btn {
    height: auto;
    min-height: 44px;
  }
  .chem-rail-toggle {
    min-height: 44px;
  }
  .chem-rail-link,
  .module-lessons-list a,
  .lesson-resources a {
    display: flex;
    align-items: center;
    min-height: 44px;
  }
}

/* Keyboard shortcut hint is no use on touch screens */
@media (hover: none), (pointer: coarse) {
  .kbd-hint {
    display: none;
  }
}

/* Video that fails to load */
.video-error {
  width: 100%;
  min-height: 44px;
  margin-top: 8px;
  text-align: center;
  text-transform: none;
  letter-spacing: 0;
}

.empty-state a {
  color: var(--teal);
}

/* Message from Craig toast */
.camino-toast {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 99999;
  width: min(380px, calc(100vw - 32px));
  background: var(--panel-inset);
  color: var(--ink);
  border: 1px solid var(--amber, #f59e0b);
  border-left: 4px solid var(--amber, #f59e0b);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.45);
  line-height: 1.45;
}

.camino-toast-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber, #f59e0b);
  margin-bottom: 6px;
}

.camino-toast-title {
  font-weight: 700;
  margin-bottom: 6px;
}

.camino-toast-body {
  white-space: pre-wrap;
  color: var(--body);
  margin-bottom: 14px;
}

.camino-toast-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.camino-toast-cta,
.camino-toast-dismiss {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}

.camino-toast-cta {
  background: var(--amber, #f59e0b);
  color: #0f172a;
  border: 1px solid var(--amber, #f59e0b);
}

.camino-toast-dismiss {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline);
}

/* Access paused (failed payment): the reason and the way back, above the course list. */
.pause-notice { margin: 1rem 0; }
.pause-notice p { margin: 0 0 0.75rem; }
.pause-notice a.btn { margin: 0; }

/* Video and audio resources play inline in the lesson. */
.resource-media { margin: 1rem 0; }
.resource-media-title { font-weight: 600; margin: 0 0 0.5rem; }
.resource-media video { width: 100%; max-height: 60vh; }