/* ============================================================
   BIOShield v2.2 — Main Stylesheet
   Design: Deep navy bg, emerald green accent
   Fonts: Satoshi + Cabinet Grotesk (via CDN)
   ============================================================ */

@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700&f[]=cabinet-grotesk@700,800&display=swap');

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f172a;
  --bg2: #1e293b;
  --bg3: #263348;
  --border: #334155;
  --border-light: #475569;
  --green: #10b981;
  --green-dark: #059669;
  --green-glow: rgba(16,185,129,0.15);
  --green-glow2: rgba(16,185,129,0.08);
  --red: #ef4444;
  --red-dark: #dc2626;
  --amber: #f59e0b;
  --blue: #3b82f6;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.6);
  --transition: 0.2s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Satoshi', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: 'Cabinet Grotesk', system-ui, sans-serif;
  line-height: 1.25;
  font-weight: 800;
}
h1 { font-size: clamp(1.5rem, 4vw, 2.2rem); }
h2 { font-size: clamp(1.2rem, 3vw, 1.6rem); }
h3 { font-size: 1.15rem; font-weight: 700; }
p { color: var(--text-muted); font-size: 0.9375rem; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* ===== LAYOUT ===== */
.container { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ===== SCREENS ===== */
.screen { display: none; min-height: 100vh; animation: fadeIn 0.3s ease; }
.screen.active { display: flex; flex-direction: column; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ===== HEADER / NAV ===== */
.topbar {
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--green);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-name {
  font-family: 'Cabinet Grotesk', sans-serif;
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-name span { color: var(--green); }

.topbar-right { display: flex; align-items: center; gap: 0.75rem; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: 'Satoshi', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--green);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--green-dark); transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg3); border-color: var(--border-light); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover:not(:disabled) { background: var(--bg2); color: var(--text); }

.btn-danger {
  background: var(--red);
  color: #fff;
}
.btn-danger:hover:not(:disabled) { background: var(--red-dark); }

.btn-sm { padding: 0.4rem 0.875rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; border-radius: var(--radius); }

.btn-loading { pointer-events: none; }
.btn-loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-left: 0.25rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== CARDS ===== */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.card-sm { padding: 1rem; }
.card-highlight { border-color: var(--green); background: var(--bg2); box-shadow: 0 0 0 1px var(--green-glow2) inset; }

/* ===== FORMS ===== */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--text); margin-bottom: 0.5rem; }
.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Satoshi', sans-serif;
  font-size: 0.9375rem;
  padding: 0.75rem 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-glow);
}
.form-input::placeholder { color: var(--text-dim); }
.form-textarea { resize: vertical; min-height: 140px; line-height: 1.7; }
.form-hint { font-size: 0.8125rem; color: var(--text-dim); margin-top: 0.375rem; }
.form-error { font-size: 0.8125rem; color: var(--red); margin-top: 0.375rem; display: none; }

/* Admin login error banner */
.admin-login-error-box {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 8px;
  padding: 0.65rem 0.875rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  color: #fca5a5;
  line-height: 1.4;
}
.admin-login-error-box svg { flex-shrink: 0; }
.form-input.input-error {
  border-color: var(--red) !important;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.18) !important;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  15%      { transform: translateX(-6px); }
  30%      { transform: translateX(6px); }
  45%      { transform: translateX(-5px); }
  60%      { transform: translateX(5px); }
  75%      { transform: translateX(-3px); }
  90%      { transform: translateX(3px); }
}
.shake { animation: shake 0.45s ease; }

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.625rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.badge-green { background: rgba(16,185,129,0.15); color: var(--green); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-amber { background: rgba(245,158,11,0.15); color: var(--amber); }
.badge-blue { background: rgba(59,130,246,0.15); color: var(--blue); }
.badge-gray { background: var(--bg3); color: var(--text-muted); }

/* ===== TOAST ===== */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.toast {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  max-width: 360px;
  box-shadow: var(--shadow);
  animation: slideIn 0.25s ease;
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.toast-success { border-color: var(--green); color: var(--green); }
.toast-error { border-color: var(--red); color: var(--red); }
.toast-info { border-color: var(--blue); color: var(--blue); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }

/* ===== DIVIDER ===== */
.divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.divider-text { display: flex; align-items: center; gap: 1rem; margin: 1.25rem 0; }
.divider-text::before, .divider-text::after { content: ''; flex: 1; border-top: 1px solid var(--border); }
.divider-text span { font-size: 0.8125rem; color: var(--text-dim); white-space: nowrap; }

/* ============================================================
   LANDING / HOME SCREEN
   ============================================================ */
#screen-home {
  background: var(--bg);
}

.hero {
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--green-glow);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: 100px;
  padding: 0.375rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.75); }
}

.hero h1 { color: var(--text); margin-bottom: 1rem; letter-spacing: -0.03em; }
.hero h1 span { color: var(--green); }
.hero p { font-size: 1.0625rem; color: var(--text-muted); max-width: 540px; margin: 0 auto 2rem; }

.hero-actions { display: flex; gap: 0.875rem; justify-content: center; flex-wrap: wrap; }

.home-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  padding: 0 1.5rem 4rem;
  max-width: 960px;
  margin: 0 auto;
}

.home-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}
.home-card:hover { border-color: var(--green); transform: translateY(-2px); }

.home-card-icon {
  width: 44px; height: 44px;
  background: var(--green-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}
.home-card h3 { color: var(--text); margin-bottom: 0.375rem; font-size: 1rem; }
.home-card p { font-size: 0.875rem; }

/* ============================================================
   LOGIN SCREEN
   ============================================================ */
#screen-login {
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
}

.login-box {
  width: 100%;
  max-width: 420px;
}

.login-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.login-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.75rem;
}

.login-tab {
  flex: 1;
  padding: 0.75rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'Satoshi', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  margin-bottom: -1px;
}
.login-tab.active { color: var(--green); border-bottom-color: var(--green); }

.login-panel { display: none; }
.login-panel.active { display: block; animation: fadeIn 0.25s ease; }

/* ============================================================
   EXERCISE / GAME SCREEN
   ============================================================ */
#screen-exercise {
  padding-bottom: 2rem;
}

.exercise-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
  align-items: start;
}

@media (max-width: 900px) {
  .exercise-layout { grid-template-columns: 1fr; }
  .exercise-sidebar { order: -1; }
}

/* Phase progress */
.phase-progress {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 1.25rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.phase-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}

.phase-step::after {
  content: '';
  position: absolute;
  right: 0;
  top: 14px;
  width: 50%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}
.phase-step::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 50%;
  height: 2px;
  background: var(--border);
  z-index: 0;
}
.phase-step:first-child::before { display: none; }
.phase-step:last-child::after { display: none; }
.phase-step.done::after { background: var(--green); }
.phase-step.done::before { background: var(--green); }
.phase-step.current::before { background: var(--green); }

.phase-dot {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg3);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}
.phase-step.done .phase-dot {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.phase-step.current .phase-dot {
  background: var(--bg);
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 0 4px var(--green-glow);
}
.phase-label {
  font-size: 0.6875rem;
  color: var(--text-dim);
  margin-top: 0.375rem;
  text-align: center;
  white-space: nowrap;
}
.phase-step.current .phase-label { color: var(--green); font-weight: 600; }

/* Phase content */
.phase-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.phase-header {
  background: linear-gradient(135deg, var(--bg3), var(--bg2));
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.phase-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.375rem;
}

.phase-title { font-size: 1.1rem; color: var(--text); }

.phase-body { padding: 1.5rem; }

.narrative-section { margin-bottom: 1.5rem; }
.narrative-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.875rem;
}

.narrative-list { list-style: none; }
.narrative-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--bg3);
}
.narrative-list li:last-child { border-bottom: none; }
.narrative-list li::before {
  content: '›';
  color: var(--green);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.question-box {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}
.question-box p {
  font-size: 0.9375rem;
  color: var(--text);
  font-weight: 500;
  line-height: 1.6;
}

.response-section {}
.response-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.char-counter {
  font-size: 0.8125rem;
  color: var(--text-dim);
  text-align: right;
  margin-top: 0.375rem;
}
.char-counter.warn { color: var(--amber); }

.response-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

/* Participant view */
.participant-view {
  background: var(--bg3);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
}
.participant-view p { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.5rem; }

/* Analysis result */
.analysis-result {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 1.5rem;
  animation: fadeIn 0.4s ease;
}

.analysis-header {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.analysis-header.score-3 { background: rgba(16,185,129,0.1); border-bottom: 1px solid rgba(16,185,129,0.3); }
.analysis-header.score-2 { background: rgba(245,158,11,0.1); border-bottom: 1px solid rgba(245,158,11,0.3); }
.analysis-header.score-1 { background: rgba(239,68,68,0.08); border-bottom: 1px solid rgba(239,68,68,0.2); }
.analysis-header.score-0 { background: rgba(239,68,68,0.1); border-bottom: 1px solid rgba(239,68,68,0.3); }

.score-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.score-value { font-size: 1.75rem; font-weight: 800; line-height: 1; }
.score-max { font-size: 0.875rem; color: var(--text-muted); }

.score-stars { display: flex; gap: 3px; }
.star { font-size: 1rem; color: var(--border-light); }
.star.filled.score-3 { color: var(--green); }
.star.filled.score-2 { color: var(--amber); }
.star.filled.score-1 { color: var(--red); }
.star.filled.score-0 { color: var(--red); }

.ai-badge {
  font-size: 0.75rem;
  color: var(--text-dim);
  background: var(--bg3);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.analysis-body { padding: 1.25rem; }

.analysis-assessment {
  background: var(--bg3);
  border-radius: var(--radius-sm);
  padding: 0.875rem 1rem;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 1.25rem;
  line-height: 1.65;
}

.elements-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
  margin-bottom: 1.25rem;
}
@media (max-width: 600px) { .elements-grid { grid-template-columns: 1fr; } }

.elements-list h5 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.elements-list.covered h5 { color: var(--green); }
.elements-list.missed h5 { color: var(--red); }

.element-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.element-item::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.elements-list.covered .element-item::before { background: var(--green); }
.elements-list.missed .element-item::before { background: var(--red); }

.analysis-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Analyzing spinner */
.analyzing-overlay {
  text-align: center;
  padding: 2rem;
  animation: fadeIn 0.3s ease;
}
.analyzing-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--bg3);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

/* Exercise complete */
.complete-card {
  text-align: center;
  padding: 2.5rem 2rem;
}
.complete-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.score-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.875rem;
  margin: 1.5rem 0;
  text-align: center;
}
.score-summary-item { background: var(--bg3); border-radius: var(--radius-sm); padding: 1rem; }
.score-summary-value { font-size: 1.5rem; font-weight: 800; color: var(--green); font-family: 'Cabinet Grotesk', sans-serif; }
.score-summary-label { font-size: 0.8125rem; color: var(--text-dim); margin-top: 0.25rem; }

/* ===== SIDEBAR ===== */
.exercise-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: sticky;
  top: 76px;
}

/* Members list */
.members-list { list-style: none; }
.member-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--bg3);
  font-size: 0.875rem;
}
.member-item:last-child { border-bottom: none; }
.member-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--green-glow);
  border: 1.5px solid var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--green);
  flex-shrink: 0;
  text-transform: uppercase;
}
.member-name { color: var(--text); font-weight: 500; flex: 1; }
.member-role { font-size: 0.75rem; }

/* Chat */
.chat-container { display: flex; flex-direction: column; height: 320px; }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.chat-msg {
  background: var(--bg3);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
}
.chat-msg-name { font-weight: 600; color: var(--green); font-size: 0.75rem; }
.chat-msg-text { color: var(--text-muted); margin-top: 0.2rem; line-height: 1.5; }
.chat-msg-time { font-size: 0.6875rem; color: var(--text-dim); margin-top: 0.25rem; }

.chat-msg.system {
  background: transparent;
  border: 1px dashed var(--border);
}
.chat-msg.system .chat-msg-text { color: var(--text-dim); font-style: italic; }

.chat-input-area {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.chat-input-area input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Satoshi', sans-serif;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
}
.chat-input-area input:focus { outline: none; border-color: var(--green); }

/* Jitsi panel */
.jitsi-container {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}
.jitsi-container iframe { width: 100%; height: 100%; border: none; }
.jitsi-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-dim);
  font-size: 0.875rem;
}

/* ============================================================
   WAITING ROOM
   ============================================================ */
#screen-waiting {
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.waiting-box {
  max-width: 540px;
  width: 100%;
  text-align: center;
}
.waiting-spinner {
  width: 56px; height: 56px;
  border: 3px solid var(--bg3);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1.5rem;
}
.room-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.875rem;
  margin: 1.5rem 0;
}
.room-info-item {
  background: var(--bg3);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: left;
}
.room-info-label { font-size: 0.75rem; color: var(--text-dim); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.room-info-value { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-top: 0.25rem; font-family: 'Cabinet Grotesk', sans-serif; letter-spacing: 0.05em; }

/* ============================================================
   UTILITIES
   ============================================================ */
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-amber { color: var(--amber); }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.8125rem; }
.font-mono { font-family: 'Courier New', monospace; letter-spacing: 0.1em; }
.fw-700 { font-weight: 700; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

.empty-state {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .hero { padding: 3rem 1.25rem 2.5rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .topbar { padding: 0.75rem 1rem; }
  .score-summary { grid-template-columns: 1fr; }
  .room-info-grid { grid-template-columns: 1fr; }
}