@import url("https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@400;500;600;700;800&display=swap");

:root {
  color-scheme: light;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: var(--font-body);
  --font-code: "Fira Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --bg: #f4f7f8;
  --surface: #ffffff;
  --surface-soft: #eef6f4;
  --text: #142126;
  --muted: #53666d;
  --border: #d8e2e5;
  --primary: #0b6b67;
  --primary-dark: #064f4c;
  --accent: #b45309;
  --success-bg: #e8f7ec;
  --success-text: #165b2f;
  --error-bg: #fff0ee;
  --error-text: #9f2d20;
  --notice-bg: #fff7df;
  --notice-text: #6f4b00;
  --shadow: 0 16px 40px rgba(20, 33, 38, 0.08);
  --radius: 16px;
  font-family: var(--font-body);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(11, 107, 103, 0.09), rgba(244, 247, 248, 0) 360px),
    var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
}

pre,
code,
kbd,
samp {
  font-family: var(--font-code);
}

a {
  color: var(--primary);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--primary-dark);
}

:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 3px;
}

.site-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  display: grid;
  gap: 28px;
  align-items: end;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  padding: 40px 0 32px;
}

.hero h1,
.lesson-header h1 {
  max-width: 880px;
  margin: 0;
  color: var(--text);
  font-size: clamp(2.25rem, 7vw, 4.9rem);
  line-height: 1.03;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero p,
.lesson-header p {
  max-width: 740px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-aside {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: var(--shadow);
}

.hero-stat {
  display: grid;
  gap: 2px;
}

.hero-stat strong {
  font-size: 1.8rem;
  line-height: 1;
}

.hero-stat span {
  color: var(--muted);
}

.section-heading {
  margin: 18px 0 22px;
}

.section-heading h2,
.panel h2,
.quiz-panel h2,
.reflection-panel h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.15;
}

.section-heading p,
.panel p,
.quiz-panel p {
  margin: 10px 0 0;
  color: var(--muted);
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.lesson-card,
.panel,
.quiz-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.lesson-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 22px;
}

.lesson-card__meta,
.time-label {
  color: var(--primary-dark);
  font-size: 0.9rem;
  font-weight: 800;
}

.lesson-card h2 {
  margin: 12px 0 10px;
  font-size: 1.3rem;
  line-height: 1.2;
}

.lesson-card p {
  margin: 0 0 16px;
  color: var(--muted);
}

.lesson-card .button {
  margin-top: auto;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: fit-content;
  margin-top: 4px;
  padding: 11px 16px;
  border: 2px solid var(--primary);
  border-radius: 999px;
  background: var(--primary);
  color: #ffffff;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
  color: #ffffff;
}

.button--secondary {
  background: #ffffff;
  color: var(--primary-dark);
}

.button--secondary:hover {
  background: var(--surface-soft);
  color: var(--primary-dark);
}

.top-nav,
.bottom-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.top-nav {
  padding: 4px 0 28px;
}

.top-nav span {
  color: var(--muted);
  font-weight: 800;
}

.lesson-header {
  padding: 12px 0 28px;
}

.lesson-header .time-label {
  color: var(--primary-dark);
}

.video-section {
  margin: 0 0 22px;
}

.video-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #111827;
  box-shadow: var(--shadow);
}

.video-frame iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-frame--3cmedia {
  --able-player-controls-height: 140px;
  aspect-ratio: auto;
  height: calc((min(1120px, 100vw - 32px) * 9 / 16) + var(--able-player-controls-height));
}

.video-frame--3cmedia iframe {
  height: 100%;
}

.video-frame--3cmedia.video-frame--firefox {
  --able-player-controls-height: 168px;
}

@media (max-width: 640px) {
  .video-frame--3cmedia {
    --able-player-layout-width: 480px;
    --able-player-layout-height: 420px;
    --able-player-scale: 1;
    height: 440px;
    min-height: 0;
  }

  .video-frame--3cmedia iframe {
    width: var(--able-player-layout-width);
    height: var(--able-player-layout-height);
    transform: scale(var(--able-player-scale));
    transform-origin: top left;
  }
}

.lesson-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0 0 22px;
}

.panel,
.quiz-panel {
  padding: 24px;
}

.quiz-panel {
  margin: 0 0 22px;
}

.quiz-form {
  display: grid;
  gap: 18px;
}

.question-card {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfdfd;
}

.question-card legend {
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 0;
  color: var(--text);
  font-weight: 800;
}

.question-card legend span {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.answer-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.answer-option {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  min-height: 44px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #ffffff;
  cursor: pointer;
}

.answer-option:hover {
  border-color: #9ac6c2;
  background: #f5fbfa;
}

.answer-option input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--primary);
}

.question-feedback {
  min-height: 1.5em;
  margin: 12px 0 0;
  font-weight: 700;
}

.question-card.is-correct {
  border-color: #8dcea0;
  background: var(--success-bg);
}

.question-card.is-incorrect,
.question-card.is-missing {
  border-color: #edb0a8;
  background: var(--error-bg);
}

.answer-option.is-correct-answer {
  border-color: #2f8f4e;
  background: #dff3e6;
  color: var(--success-text);
}

.answer-option.is-selected-wrong {
  border-color: #c53a2c;
  background: #ffe4e0;
  color: var(--error-text);
}

.quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.quiz-summary {
  min-height: 1.5em;
  border-radius: 12px;
  font-weight: 800;
}

.quiz-summary:not(:empty) {
  padding: 14px 16px;
}

.quiz-summary--notice {
  background: var(--notice-bg);
  color: var(--notice-text);
}

.quiz-summary--complete {
  background: var(--success-bg);
  color: var(--success-text);
}

.reflection-panel {
  margin-bottom: 22px;
  background: var(--surface-soft);
  padding: 24px 0 !important; /* Override standard panel padding */
  overflow: hidden; /* Prevent focus shadow clipping issues */
}

.bottom-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  padding: 10px 0 0;
}

.bottom-nav > :last-child {
  justify-self: end;
}

.site-footer {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero,
  .lesson-layout {
    grid-template-columns: 1fr;
  }

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

  .hero-aside {
    padding: 14px 10px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    text-align: center;
    gap: 8px;
  }

  .hero-stat {
    gap: 2px;
  }

  .hero-stat strong {
    font-size: 1.45rem;
  }

  .hero-stat span {
    font-size: 0.78rem;
    line-height: 1.25;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(100% - 24px, 1120px);
    padding-top: 20px;
  }

  .hero {
    padding-top: 22px;
  }

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

  .lesson-card {
    min-height: 0;
  }

  .top-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .bottom-nav {
    grid-template-columns: 1fr;
  }

  .bottom-nav .button {
    width: 100%;
  }

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

  .panel,
  .quiz-panel {
    padding: 18px;
  }
}

/* ==========================================================================
   Reflection Form & Reflections Journal styles
   ========================================================================== */

/* Accessibility Utility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Lesson card completed state */
.lesson-card--completed {
  border-color: #8dcea0;
  background: var(--surface-soft);
}

.lesson-card {
  position: relative;
}

.lesson-card__status-indicator {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--success-bg);
  color: var(--success-text);
  border: 1px solid rgba(22, 91, 47, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(22, 91, 47, 0.15);
  animation: pop-in 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes pop-in {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* Reflection Form */
.reflection-panel h2,
.reflection-prompt,
.reflection-actions {
  padding-left: 24px;
  padding-right: 24px;
}

.reflection-form {
  margin-top: 18px;
  display: block; /* Stack elements vertically */
}

.reflection-prompt {
  line-height: 1.5;
  color: var(--muted);
}

.reflection-form textarea {
  width: 100%;
  min-height: 160px;
  padding: 18px 24px; /* Typing starts aligned with header */
  border-left: none;
  border-right: none;
  border-radius: 0;
  margin: 16px 0;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.6;
  resize: vertical;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s, background-color 0.2s;
}

.reflection-form textarea:focus {
  outline: none;
  border-top-color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: #fbfdfd;
}

@media (max-width: 640px) {
  .reflection-panel {
    padding: 18px 0 !important;
  }

  .reflection-panel h2,
  .reflection-prompt,
  .reflection-actions {
    padding-left: 18px;
    padding-right: 18px;
  }

  .reflection-form textarea {
    padding: 18px 18px;
  }
}

.reflection-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.save-status {
  font-size: 0.9rem;
  font-weight: 700;
  transition: opacity 0.3s ease;
  margin-left: 4px;
}

.save-status.status--saving {
  color: var(--muted);
}

.save-status.status--saved {
  color: var(--success-text);
  animation: pulse-green 0.5s ease-in-out;
}

@keyframes pulse-green {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* Completion Panel */
.completion-panel {
  margin-bottom: 22px;
  background: linear-gradient(135deg, #e8f7ec, #dff3e6);
  border-color: #8dcea0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px;
}

.completion-content {
  display: flex;
  align-items: center;
  gap: 16px;
}

.completion-icon {
  font-size: 2.2rem;
}

.completion-panel h2 {
  color: var(--success-text);
  margin: 0 0 4px 0 !important;
}

.completion-panel p {
  color: #1a512d !important;
  margin: 0 !important;
  font-size: 0.95rem;
}

.button--success {
  background-color: #165b2f;
  border-color: #165b2f;
}

.button--success:hover {
  background-color: #0e3e20;
  border-color: #0e3e20;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 12pt;
    line-height: 1.5;
  }

  .site-shell {
    display: none !important;
  }

  .print-only-report {
    display: block !important;
    padding: 20px;
  }
}

.print-only-report {
  display: none;
}

.print-doc-header {
  border-bottom: 2px solid #333333;
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.print-header-top {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.print-header-sub {
  font-size: 0.95rem;
  color: #555555;
  margin-bottom: 8px;
}

.print-doc-header h1 {
  font-size: 2rem;
  margin: 12px 0 6px 0;
}

.print-meta-line {
  margin: 4px 0;
  font-size: 0.95rem;
  color: #333333;
}

.print-doc-section {
  margin-bottom: 28px;
}

.print-doc-section h2 {
  font-size: 1.3rem;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 4px;
  margin-top: 0;
  margin-bottom: 14px;
}

.print-score-summary {
  background-color: #f3f4f6;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.print-questions-list {
  display: grid;
  gap: 14px;
}

.print-question-item {
  border-bottom: 1px dashed #e5e7eb;
  padding-bottom: 10px;
}

.print-question-item:last-child {
  border-bottom: none;
}

.print-question-prompt {
  margin: 0 0 4px 0;
  font-weight: 700;
}

.print-question-answer {
  margin: 0;
  font-size: 0.95rem;
}

.answer-val {
  font-weight: 700;
}

.answer-val.correct {
  color: #15803d;
}

.answer-val.incorrect {
  color: #b91c1c;
}

.badge-icon {
  font-weight: 800;
}

.print-reflection-block {
  border: 1px solid #cccccc;
  border-radius: 8px;
  padding: 16px;
  background-color: #fbfbfb;
}

.print-prompt-text {
  margin: 0 0 12px 0;
  color: #444444;
  font-style: italic;
}

.print-response-text {
  line-height: 1.6;
  color: #000000;
  white-space: pre-wrap;
}

.print-doc-footer {
  margin-top: 40px;
  border-top: 1px solid #cccccc;
  padding-top: 12px;
  font-size: 0.85rem;
  color: #666666;
  text-align: center;
}

.print-url {
  font-family: var(--font-code);
  margin-top: 4px;
}

/* ==========================================================================
   Navigation Drawer
   ========================================================================== */
.back-home-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  text-decoration: none;
  font-weight: 800;
  transition: color 0.2s;
}

.back-home-link:hover {
  color: var(--primary-dark);
}

.hamburger-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border-radius: 50%;
  transition: background-color 0.2s, color 0.2s;
}

.hamburger-btn:hover {
  background-color: var(--surface-soft);
  color: var(--primary-dark);
}

.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  justify-content: flex-end;
  visibility: hidden;
  transition: visibility 0.3s;
}

.nav-drawer--open {
  visibility: visible;
}

.nav-drawer__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(20, 33, 38, 0.4);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nav-drawer--open .nav-drawer__overlay {
  opacity: 1;
}

.nav-drawer__content {
  position: relative;
  z-index: 1001;
  width: min(360px, 100% - 40px);
  height: 100%;
  background: var(--surface);
  box-shadow: -10px 0 30px rgba(20, 33, 38, 0.15);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-drawer--open .nav-drawer__content {
  transform: translateX(0);
}

.nav-drawer__header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-drawer__header h2 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--text);
  font-weight: 800;
}

.close-drawer-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, color 0.2s;
}

.close-drawer-btn:hover {
  background-color: var(--surface-soft);
  color: var(--text);
}

.nav-drawer__list {
  flex-grow: 1;
  overflow-y: auto;
  padding: 16px 24px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.nav-drawer__item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, background-color 0.2s;
}

.nav-drawer__item-num {
  grid-column: 1 / -1;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-drawer__item-title {
  font-size: 0.95rem;
  font-weight: 700;
}

.nav-drawer__item-badge {
  color: var(--success-text);
  font-weight: 800;
  font-size: 1.1rem;
}

.nav-drawer__item:hover {
  background-color: var(--surface-soft);
  border-color: #bcd4d0;
}

.nav-drawer__item--current {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.nav-drawer__item--current .nav-drawer__item-num {
  color: #f59e0b;
}

.nav-drawer__item--current .nav-drawer__item-badge {
  color: #ffffff;
}

.nav-drawer__item--current:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #ffffff;
}

.nav-drawer__item--completed:not(.nav-drawer__item--current) {
  border-color: #8dcea0;
  background-color: rgba(232, 247, 236, 0.3);
}

.nav-drawer__footer {
  padding: 24px;
  border-top: 1px solid var(--border);
}

/* ==========================================================================
   Info Button & Academic Dialog
   ========================================================================== */
.site-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: -24px; /* Pull the hero section up slightly */
  position: relative;
  z-index: 10;
}

.top-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.info-btn {
  background: none;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  transition: background-color 0.2s, color 0.2s, transform 0.2s;
}

.info-btn:hover {
  background-color: var(--primary);
  color: #ffffff;
  transform: scale(1.05);
}

/* Modal Dialog */
.info-dialog {
  padding: 0;
  border: none;
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 24px 64px rgba(20, 33, 38, 0.25);
  max-width: min(420px, calc(100% - 32px));
  width: 100%;
  overflow: hidden;
  animation: modal-fade-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.info-dialog::backdrop {
  background-color: rgba(20, 33, 38, 0.45);
  backdrop-filter: blur(6px);
  animation: backdrop-fade-in 0.3s ease;
}

@keyframes modal-fade-in {
  from { transform: translateY(16px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes backdrop-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.info-dialog__content {
  display: flex;
  flex-direction: column;
}

.info-dialog__header {
  padding: 24px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.info-dialog__header h2 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--text);
  font-weight: 800;
}

.close-dialog-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, color 0.2s;
}

.close-dialog-btn:hover {
  background-color: var(--surface-soft);
  color: var(--text);
}

.info-dialog__body {
  padding: 24px;
  display: grid;
  gap: 20px;
}

.info-group h3 {
  margin: 0 0 6px 0;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.info-group p {
  margin: 0 0 4px 0;
  font-size: 0.98rem;
  color: var(--text);
  line-height: 1.4;
}

.info-group .dept-title {
  font-weight: 700;
}

.info-group .college-title {
  color: var(--muted);
}

.info-link {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  transition: color 0.2s;
}

.info-link:hover {
  color: var(--primary-dark);
}