:root {
  --bg: #fdfdfc;
  --bg-subtle: #f6f5f1;
  --card-bg: #ffffff;
  --ink: #111113;
  --ink-secondary: #55555c;
  --border: #e3e2dc;
  --border-focus: #111113;
  
  /* Highlighter & Brand Accents */
  --highlight: #e6ff2e;
  --cyan: #22d3ee;
  --cyan-soft: #ecfeff;
  --pink: #ff5fa2;
  --pink-soft: #fff1f6;
  --blue: #2f5bff;
  --blue-soft: #eff4ff;
  --green: #10b981;
  --red: #ef4444;

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 8px 30px rgba(17, 17, 19, 0.05);
  --shadow-lg: 0 16px 40px rgba(17, 17, 19, 0.08);
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg: #0d0d0f;
  --bg-subtle: #16161a;
  --card-bg: #1a1a20;
  --ink: #f4f4f6;
  --ink-secondary: #9a9aa5;
  --border: #282832;
  --border-focus: #f4f4f6;
  --highlight: #d9fa19;
  --cyan-soft: #083344;
  --pink-soft: #4a0422;
  --blue-soft: #172554;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ================= APP CONTAINER ================= */
.app-container {
  max-width: 1280px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 24px;
}

/* ================= HEADER ================= */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1.5px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}

.brand-logo {
  font-size: 24px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  background: var(--ink);
  color: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  vertical-align: middle;
}

.badge-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--ink-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dot-pulse {
  width: 7px;
  height: 7px;
  background-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 rgba(16, 185, 129, 0.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.nav-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  background: transparent;
  color: var(--ink-secondary);
  border: 1.5px solid transparent;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-btn:hover {
  background: var(--bg-subtle);
  color: var(--ink);
}

.nav-btn.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-external {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
  border: 1.5px solid var(--border);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-external:hover {
  border-color: var(--ink);
  background: var(--bg-subtle);
}

.arrow-ext {
  font-size: 14px;
}

.btn-icon {
  color: var(--ink-secondary);
  padding: 8px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
}

.btn-icon:hover {
  color: var(--ink);
  background: var(--bg-subtle);
}

/* ================= MAIN CONTENT ================= */
.app-main {
  flex: 1;
  padding: 40px 0 60px 0;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ================= TYPOGRAPHY HELPERS ================= */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  display: block;
  margin-bottom: 6px;
}

.highlight {
  background-color: var(--highlight);
  color: #111;
  padding: 0 4px;
  border-radius: 2px;
}

.underline {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* ================= HERO SPLIT (GOODY-2 STYLE) ================= */
.hero-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 4.5vw, 62px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-lead {
  font-size: 18px;
  color: var(--ink-secondary);
  line-height: 1.6;
  max-width: 54ch;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-action {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  border: 1.5px solid transparent;
}

.btn-action.primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn-action.primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn-action.secondary {
  background: var(--bg-subtle);
  color: var(--ink);
  border-color: var(--border);
}

.btn-action.secondary:hover {
  border-color: var(--ink);
}

.btn-action.outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}

.btn-action.outline:hover {
  border-color: var(--ink);
  background: var(--bg-subtle);
}

/* Hero Right Demo Card */
.card-demo {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.demo-header {
  background: var(--bg-subtle);
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.window-dot.red { background: #ef4444; }
.window-dot.yellow { background: #f59e0b; }
.window-dot.green { background: #10b981; }

.demo-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-secondary);
  margin-left: 6px;
}

.demo-transcript {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.msg-row.user {
  align-items: flex-end;
}

.msg-row.slm {
  align-items: flex-start;
}

.sender {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--ink-secondary);
}

.bubble {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14.5px;
  line-height: 1.5;
  max-width: 90%;
}

.msg-row.user .bubble {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--ink);
}

.msg-row.slm .bubble {
  background: var(--pink-soft);
  border-left: 3px solid var(--pink);
  color: var(--ink);
}

/* ================= CHAT WORKBENCH ================= */
.chat-workbench {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.workbench-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.workbench-header h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  margin-bottom: 4px;
}

.workbench-sub {
  color: var(--ink-secondary);
  font-size: 15px;
  max-width: 68ch;
}

.workbench-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.mode-toggle input {
  display: none;
}

.toggle-slider {
  width: 36px;
  height: 20px;
  background-color: var(--border);
  border-radius: 999px;
  position: relative;
  transition: var(--transition);
}

.toggle-slider::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  left: 3px;
  top: 3px;
  background-color: white;
  border-radius: 50%;
  transition: var(--transition);
}

.mode-toggle input:checked + .toggle-slider {
  background-color: var(--cyan);
}

.mode-toggle input:checked + .toggle-slider::after {
  transform: translateX(16px);
}

.toggle-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
}

.btn-subtle {
  font-family: var(--font-mono);
  font-size: 12px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-subtle:hover {
  border-color: var(--ink);
  color: var(--ink);
}

/* Prompt Pills */
.pills-container {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pills-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-secondary);
}

.pill-btn {
  font-family: var(--font-body);
  font-size: 13px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  color: var(--ink);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: var(--transition);
}

.pill-btn:hover {
  border-color: var(--ink);
  background: var(--bg);
}

/* Conversation Stream */
.conversation-stream {
  min-height: 280px;
  max-height: 480px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  background: var(--bg-subtle);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.system-notice {
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 13.5px;
  color: var(--ink-secondary);
}

.notice-icon {
  font-size: 20px;
}

.msg-turn {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.msg-turn.user {
  align-self: flex-end;
  max-width: 80%;
}

.msg-turn.assistant {
  align-self: flex-start;
  max-width: 85%;
}

.msg-content {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg-turn.user .msg-content {
  background: var(--ink);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 13.5px;
}

.msg-turn.assistant .msg-content {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-left: 4px solid var(--cyan);
  box-shadow: var(--shadow);
}

.msg-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.btn-feedback {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-feedback:hover {
  border-color: var(--ink);
}

/* Escalation Banner */
.escalation-banner {
  background: var(--pink-soft);
  border: 1.5px solid var(--pink);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeIn 0.2s ease;
}

.escalation-banner.hidden {
  display: none;
}

.banner-icon {
  font-size: 20px;
}

.banner-body {
  flex: 1;
  font-size: 13.5px;
  line-height: 1.45;
}

.banner-close {
  background: transparent;
  border: 0;
  font-size: 16px;
  cursor: pointer;
  color: var(--ink);
}

/* Chat Form */
.chat-form {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.input-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

textarea#input-proof {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  color: var(--ink);
  resize: vertical;
  min-height: 90px;
  transition: var(--transition);
}

textarea#input-proof:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

.input-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  padding: 0 4px;
}

.btn-send {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  background: var(--ink);
  color: var(--bg);
  border: 1.5px solid var(--ink);
  padding: 14px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 90px;
  transition: var(--transition);
}

.btn-send:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-send:disabled {
  opacity: 0.5;
  cursor: wait;
}

/* ================= SECTION HEADINGS ================= */
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1.5px solid var(--border);
}

.section-heading h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 3.5vw, 44px);
  font-weight: 400;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.section-heading p {
  color: var(--ink-secondary);
  font-size: 16px;
  max-width: 60ch;
}

/* ================= CALENDAR PLANNER ================= */
.planner-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.date-picker-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
}

.date-picker-wrap input[type="date"] {
  font-family: var(--font-mono);
  font-size: 13.5px;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  color: var(--ink);
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-lbl {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-secondary);
}

.filter-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  color: var(--ink);
  cursor: pointer;
  transition: var(--transition);
}

.filter-chip:hover {
  border-color: var(--ink);
}

.filter-chip.active {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

/* Calendar Timeline Grid */
.calendar-timeline {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.timeline-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 240px 1fr auto;
  gap: 24px;
  align-items: center;
  transition: var(--transition);
}

.timeline-card:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

.tl-dates {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tl-week-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--blue);
}

.tl-date-range {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
}

.tl-details h3 {
  font-family: var(--font-display);
  font-size: 21px;
  margin-bottom: 4px;
}

.tl-details p {
  font-size: 14.5px;
  color: var(--ink-secondary);
}

.tl-deliverables {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.deliv-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.deliv-pill.exam {
  background: var(--pink-soft);
  border-color: var(--pink);
  color: var(--pink);
  font-weight: 700;
}

.deliv-pill.activity {
  background: var(--cyan-soft);
  border-color: var(--cyan);
  color: #0369a1;
}

.deliv-pill.discussion {
  background: var(--blue-soft);
  border-color: var(--blue);
  color: var(--blue);
}

.deliv-pill.project {
  background: var(--highlight);
  border-color: #111;
  color: #111;
  font-weight: 700;
}

.tl-stop-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  white-space: nowrap;
}

/* ================= SYLLABUS SECTION ================= */
.course-meta-card {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--ink-secondary);
}

.meta-val {
  font-size: 14px;
  font-weight: 600;
}

/* Grade Distribution Panel */
.grade-distribution-panel {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow);
}

.grade-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.grade-header h3 {
  font-family: var(--font-display);
  font-size: 22px;
}

.total-weight {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.weights-bar {
  display: flex;
  height: 28px;
  border-radius: 6px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.segment {
  display: flex;
  align-items: center;
  justify-content: center;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.segment.s-exams, .swatch.s-exams { background-color: var(--pink); }
.segment.s-activities, .swatch.s-activities { background-color: var(--cyan); }
.segment.s-discussions, .swatch.s-discussions { background-color: var(--blue); }
.segment.s-project, .swatch.s-project { background-color: #111113; color: var(--highlight); }

.weights-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  font-size: 13px;
  color: var(--ink-secondary);
}

.leg-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* Syllabus Grid */
.syllabus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.syllabus-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.syllabus-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.week-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
}

.syllabus-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
}

.syllabus-topics {
  font-size: 14.5px;
  color: var(--ink-secondary);
  line-height: 1.5;
}

.syllabus-activities {
  font-size: 13.5px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.activities-title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--ink-secondary);
  margin-bottom: 4px;
}

.portal-cta {
  background: var(--bg-subtle);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.portal-left h3 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-bottom: 6px;
}

.portal-left p {
  color: var(--ink-secondary);
  max-width: 64ch;
  font-size: 15px;
}

/* ================= 8 KEYS SECTION ================= */
.account-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
}

.badge-avatar {
  font-size: 28px;
}

.account-name {
  font-weight: 700;
  font-size: 15px;
}

.account-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--green);
}

.keys-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.key-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.key-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.key-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.key-card h3 {
  font-family: var(--font-display);
  font-size: 21px;
}

.key-card p {
  font-size: 14.5px;
  color: var(--ink-secondary);
  line-height: 1.5;
}

/* ================= CLI & EMBED SECTION ================= */
.embed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.embed-card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}

.embed-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
}

.terminal-block, .code-block {
  background: #111115;
  color: #e5e5eb;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  overflow-x: auto;
}

/* REA Integration Panel */
.rea-integration-panel {
  background: var(--bg-subtle);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rea-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.rea-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rea-title h3 {
  font-family: var(--font-display);
  font-size: 24px;
}

.badge-rea {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--ink);
  color: var(--bg);
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 700;
}

.rea-invariants {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin-top: 10px;
}

.invariant-row {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.invariant-row code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--pink);
}

.invariant-row span {
  font-size: 13.5px;
  color: var(--ink-secondary);
}

/* ================= FOOTER ================= */
.app-footer {
  border-top: 1.5px solid var(--border);
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--ink-secondary);
}

.app-footer a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sep {
  margin: 0 6px;
  opacity: 0.5;
}

/* ================= EMBED MODE (?embed=true) ================= */
body.embed-mode .app-container {
  padding: 12px;
  max-width: 100%;
}

body.embed-mode .app-header {
  padding: 8px 0 12px 0;
}

body.embed-mode .header-right,
body.embed-mode .hero-split,
body.embed-mode .app-footer,
body.embed-mode .portal-cta {
  display: none !important;
}

body.embed-mode .app-main {
  padding: 12px 0;
}

body.embed-mode .chat-workbench {
  padding: 16px;
  box-shadow: none;
}

/* ================= COURSE MAP EMBEDDED TAB ================= */
.coursemap-header-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 24px 28px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  gap: 20px;
}

.coursemap-header-info h2 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  margin: 6px 0 10px 0;
  color: var(--text-main);
}

.coursemap-header-info p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
  max-width: 820px;
  margin: 0;
}

.coursemap-frame-wrap {
  border: 2px solid var(--text-main);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow-brutal);
}

.frame-browser-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card-subtle);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 16px;
  gap: 16px;
}

.browser-dots {
  display: flex;
  gap: 6px;
}

.browser-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.browser-dots .dot.red { background: #ff5f56; }
.browser-dots .dot.yellow { background: #ffbd2e; }
.browser-dots .dot.green { background: #27c93f; }

.browser-address {
  flex: 1;
  max-width: 540px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: all;
}

.browser-tools {
  display: flex;
  gap: 8px;
}

.btn-frame-tool {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: all 0.15s ease;
}

.btn-frame-tool:hover {
  background: var(--bg-hover);
  border-color: var(--text-main);
}

.coursemap-iframe {
  width: 100%;
  height: 85vh;
  min-height: 850px;
  border: none;
  display: block;
  background: #ffffff;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
  .coursemap-header-card {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .coursemap-iframe {
    height: 70vh;
    min-height: 550px;
  }

  .hero-split {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .timeline-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .chat-form {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-send {
    height: auto;
    padding: 12px;
    justify-content: center;
  }
}