/* ============================================================
   Double Ender Recorder – Global CSS
   Dark Studio Theme
   ============================================================ */

/* --- Google Font Import (Fallback wenn offline) ----------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Custom Properties -------------------------------- */
:root {
  --bg-primary: #080b12;
  --bg-secondary: #0e1219;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --bg-input: rgba(255,255,255,0.06);

  --border: rgba(255,255,255,0.08);
  --border-focus: rgba(99,239,200,0.5);

  --accent-cyan: #63efc8;
  --accent-cyan-dim: rgba(99,239,200,0.15);
  --accent-red: #ff4757;
  --accent-red-dim: rgba(255,71,87,0.15);
  --accent-amber: #ffb142;
  --accent-green: #2ed573;
  --accent-purple: #a29bfe;

  --text-primary: #f0f4f8;
  --text-secondary: #8898aa;
  --text-muted: #4a5568;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow-cyan: 0 0 30px rgba(99,239,200,0.2);
  --shadow-glow-red: 0 0 20px rgba(255,71,87,0.4);

  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

/* --- Reset & Base ----------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

input, button, textarea { font-family: inherit; }

.hidden { display: none !important; }

/* --- Background Effects ----------------------------------- */
.bg-grid {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.bg-glow {
  position: fixed; border-radius: 50%;
  filter: blur(100px); pointer-events: none; z-index: 0;
}
.bg-glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(99,239,200,0.06) 0%, transparent 70%);
  top: -200px; right: -100px;
}
.bg-glow-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(162,155,254,0.05) 0%, transparent 70%);
  bottom: -200px; left: -100px;
}

/* --- Cards ------------------------------------------------ */
.card {
  position: relative; z-index: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem; font-weight: 600;
  border: none; cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #4fd1b5);
  color: #0a1a15;
  box-shadow: 0 4px 20px rgba(99,239,200,0.3);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,239,200,0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.15);
}

.btn-large { padding: 1rem 2rem; font-size: 1rem; border-radius: var(--radius-lg); }

.btn-icon { font-size: 0.8rem; opacity: 0.8; }

.btn-copy {
  padding: 0.5rem 1rem;
  background: var(--bg-card-hover);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  transition: var(--transition);
  cursor: pointer;
}
.btn-copy:hover, .btn-copy.copied {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border-color: var(--border-focus);
}

.btn-record {
  background: linear-gradient(135deg, var(--accent-red), #c0392b);
  color: white;
  padding: 1.2rem 3rem;
  font-size: 1.1rem;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(255,71,87,0.3);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-record:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-red);
}
.btn-record.recording {
  background: linear-gradient(135deg, #c0392b, #922b21);
  animation: pulse-record 2s ease-in-out infinite;
}

.btn-stop {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}
.btn-stop:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.btn-download {
  background: linear-gradient(135deg, var(--accent-cyan), #4fd1b5);
  color: #0a1a15;
  padding: 1rem 2rem;
  font-size: 1rem;
  border-radius: 50px;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(99,239,200,0.3);
}
.btn-download:hover { transform: translateY(-2px); }

.btn-send {
  background: var(--accent-cyan);
  color: #0a1a15;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.btn-send:hover { opacity: 0.85; }

/* --- Forms ------------------------------------------------ */
.form-group {
  display: flex; flex-direction: column; gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.form-group input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}
.form-group input:focus {
  border-color: var(--border-focus);
  background: rgba(99,239,200,0.05);
  box-shadow: 0 0 0 3px rgba(99,239,200,0.1);
}
.form-group input::placeholder { color: var(--text-muted); }

/* --- Spinner ---------------------------------------------- */
.spinner {
  width: 24px; height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-state {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================================
   LANDING PAGE
   ============================================================ */
.landing-page {
  display: flex; flex-direction: column;
  min-height: 100vh;
}

.landing-main {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center;
  padding: 4rem 1.5rem 2rem;
  gap: 2rem;
  position: relative; z-index: 1;
}

/* --- Logo / Header ---------------------------------------- */
.landing-header { text-align: center; margin-bottom: 1rem; }

.logo {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.logo-icon { font-size: 2rem; }
.logo-text {
  font-size: 1.75rem; font-weight: 800;
  background: linear-gradient(135deg, #f0f4f8, var(--accent-cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-badge {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid rgba(99,239,200,0.3);
  padding: 0.15rem 0.6rem;
  border-radius: 50px;
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tagline {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
}

/* --- Create Card ------------------------------------------ */
.create-card { width: 100%; max-width: 520px; }

.create-form { display: flex; flex-direction: column; }

/* --- Result Card ------------------------------------------ */
.result-card {
  width: 100%; max-width: 600px;
  animation: slide-up 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.result-header {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.75rem;
}
.result-header h2 { font-size: 1.3rem; font-weight: 700; }
.result-icon { font-size: 1.5rem; }

.link-group { display: flex; flex-direction: column; gap: 1.25rem; margin-bottom: 1.75rem; }

.link-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
}
.link-item--host { border-left: 3px solid var(--accent-amber); }
.link-item--guest { border-left: 3px solid var(--accent-cyan); }

.link-label {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem; color: var(--text-secondary);
}
.link-badge {
  font-size: 0.7rem; font-weight: 800;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  letter-spacing: 0.1em;
}
.badge-host { background: rgba(255,177,66,0.2); color: var(--accent-amber); }
.badge-guest { background: var(--accent-cyan-dim); color: var(--accent-cyan); }

.link-input-row { display: flex; gap: 0.5rem; }
.link-input-row input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  outline: none;
  font-family: 'Courier New', monospace;
  cursor: text;
}

.result-actions {
  display: flex; flex-wrap: wrap; gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.result-info {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.result-info p { font-size: 0.85rem; color: var(--text-muted); }

/* --- Info Section ----------------------------------------- */
.info-section { width: 100%; max-width: 900px; }

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
}
.info-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.12);
  transform: translateY(-2px);
}
.info-icon { font-size: 1.75rem; display: block; margin-bottom: 0.75rem; }
.info-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.info-card p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.5; }

/* --- Footer ----------------------------------------------- */
.landing-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  position: relative; z-index: 1;
}

/* ============================================================
   JOIN SCREEN
   ============================================================ */
.join-screen {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  background: var(--bg-primary);
}

.join-card { width: 100%; max-width: 440px; }

.mic-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding: 0.75rem;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* ============================================================
   SESSION PAGE
   ============================================================ */
.session-page { display: flex; flex-direction: column; min-height: 100vh; }

/* --- Header ----------------------------------------------- */
.session-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: rgba(8,11,18,0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-left { display: flex; align-items: center; gap: 0.75rem; }

.logo-small {
  font-weight: 700; font-size: 0.95rem;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 0.4rem;
}
.logo-small:hover { text-decoration: none; opacity: 0.8; }

.session-id-badge {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Courier New', monospace;
  letter-spacing: 0.05em;
}

.header-center { display: flex; align-items: center; }

/* REC-Indikator */
.rec-indicator {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--accent-red-dim);
  border: 1px solid rgba(255,71,87,0.3);
  border-radius: 50px;
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem; font-weight: 700;
  color: var(--accent-red);
  letter-spacing: 0.1em;
}
.rec-dot {
  width: 8px; height: 8px;
  background: var(--accent-red);
  border-radius: 50%;
  animation: blink 1s ease-in-out infinite;
}
.rec-timer { font-variant-numeric: tabular-nums; min-width: 3ch; }

/* Connection Status */
.connection-status {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.8rem; color: var(--text-secondary);
}
.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-connecting { background: var(--accent-amber); animation: blink 1s ease-in-out infinite; }
.status-connected { background: var(--accent-green); }
.status-disconnected { background: var(--accent-red); }

/* --- Layout ----------------------------------------------- */
.session-app { flex: 1; display: flex; flex-direction: column; position: relative; z-index: 1; }

.session-layout {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1px;
  background: var(--border);
  min-height: 0;
}

.session-main {
  display: flex; flex-direction: column;
  background: var(--bg-primary);
  min-height: 0;
  padding: 1.5rem;
  gap: 1.5rem;
}

/* --- Participants Grid ------------------------------------- */
.participants-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  flex: 1;
}

/* Teilnehmer-Karte */
.participant-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.participant-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: var(--transition);
}
.participant-card.recording::before { opacity: 1; }
.participant-card.recording {
  border-color: rgba(255,71,87,0.3);
  background: rgba(255,71,87,0.04);
}
.participant-card.local {
  border-color: rgba(99,239,200,0.2);
}

.participant-card-header {
  display: flex; align-items: center; justify-content: space-between;
}

.participant-name {
  font-weight: 600; font-size: 0.95rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.participant-you-badge {
  font-size: 0.65rem; font-weight: 700;
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.participant-host-badge {
  font-size: 0.65rem; font-weight: 700;
  background: rgba(255,177,66,0.15);
  color: var(--accent-amber);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.participant-status-icon { font-size: 0.85rem; }

/* VU Meter */
.vu-meter-container {
  display: flex; flex-direction: column; gap: 4px;
}
.vu-canvas {
  width: 100%; height: 40px;
  border-radius: 6px;
  background: rgba(0,0,0,0.3);
}
.vu-peak-label {
  font-size: 0.7rem; color: var(--text-muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Participant Status Bar */
.participant-status-bar {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.78rem; color: var(--text-muted);
}
.status-pill {
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.02em;
}
.status-pill.connected { background: rgba(46,213,115,0.1); color: var(--accent-green); }
.status-pill.recording { background: rgba(255,71,87,0.12); color: var(--accent-red); }
.status-pill.uploading { background: rgba(255,177,66,0.12); color: var(--accent-amber); }
.status-pill.done { background: rgba(99,239,200,0.1); color: var(--accent-cyan); }

/* --- Controls Panel --------------------------------------- */
.controls-panel {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; flex-wrap: wrap;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.host-controls { display: flex; align-items: center; gap: 1rem; }

.guest-info { display: flex; align-items: center; }
.guest-waiting-msg {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Upload Progress */
.upload-status {
  display: flex; flex-direction: column; gap: 0.5rem;
  align-items: center; width: 100%; max-width: 300px;
}
.upload-progress {
  width: 100%; height: 4px;
  background: var(--bg-input);
  border-radius: 2px;
  overflow: hidden;
}
.upload-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), #4fd1b5);
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
}
#upload-status-text {
  font-size: 0.8rem; color: var(--text-muted);
}

/* --- Sidebar ---------------------------------------------- */
.session-sidebar {
  background: var(--bg-secondary);
  display: flex; flex-direction: column;
  min-height: 0;
}

.sidebar-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  gap: 0;
}
.tab-btn {
  flex: 1; padding: 0.875rem 0.5rem;
  background: none; border: none;
  color: var(--text-muted);
  font-size: 0.85rem; font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  position: relative;
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
}
.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}
.tab-btn:hover:not(.active) { color: var(--text-primary); }

.chat-badge {
  background: var(--accent-red);
  color: white;
  font-size: 0.65rem; font-weight: 800;
  padding: 0.05rem 0.35rem;
  border-radius: 50px;
  min-width: 1.1rem;
  text-align: center;
}

.tab-content { display: none; flex: 1; overflow-y: auto; min-height: 0; }
.tab-content.active { display: flex; flex-direction: column; }

/* Participant List */
.participant-list {
  list-style: none;
  padding: 0.75rem;
  display: flex; flex-direction: column; gap: 0.4rem;
}
.participant-list-item {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.participant-list-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  flex-shrink: 0;
}
.participant-list-dot.recording { background: var(--accent-red); animation: blink 1s infinite; }
.participant-list-name { flex: 1; font-weight: 500; }
.participant-list-badge {
  font-size: 0.65rem; font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Chat */
.chat-messages {
  flex: 1; padding: 0.75rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  overflow-y: auto;
}
.chat-placeholder {
  text-align: center; color: var(--text-muted);
  font-size: 0.85rem; padding: 2rem 0;
}
.chat-message {
  display: flex; flex-direction: column; gap: 0.15rem;
}
.chat-message-meta {
  font-size: 0.7rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 0.4rem;
}
.chat-message-name { font-weight: 600; color: var(--text-secondary); }
.chat-message-text {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.4;
  word-break: break-word;
}
.chat-message.own .chat-message-text {
  background: var(--accent-cyan-dim);
  border-color: rgba(99,239,200,0.2);
}

.chat-input-row {
  display: flex; gap: 0.5rem;
  padding: 0.75rem;
  border-top: 1px solid var(--border);
}
.chat-input-row input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.6rem 0.75rem;
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}
.chat-input-row input:focus {
  border-color: var(--border-focus);
}

/* --- Error Screen ----------------------------------------- */
.error-screen {
  position: fixed; inset: 0; z-index: 200;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1rem; padding: 2rem;
  text-align: center;
}
.error-icon { font-size: 3rem; }
.error-screen h2 { font-size: 1.5rem; font-weight: 700; }
.error-screen p { color: var(--text-secondary); max-width: 400px; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@keyframes pulse-record {
  0%, 100% { box-shadow: 0 4px 20px rgba(255,71,87,0.3); }
  50% { box-shadow: 0 4px 40px rgba(255,71,87,0.6), 0 0 0 8px rgba(255,71,87,0.1); }
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

.slide-in { animation: slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .session-layout {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
  }
  .session-sidebar {
    max-height: 200px;
    border-top: 1px solid var(--border);
  }
  .session-main { padding: 1rem; }
  .participants-grid { grid-template-columns: 1fr 1fr; }
  .landing-main { padding: 2rem 1rem 1rem; }
  .result-actions { flex-direction: column; }
  .result-actions .btn { width: 100%; justify-content: center; }
  .btn-record, .btn-stop { padding: 1rem 2rem; }
}

@media (max-width: 480px) {
  .participants-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .session-header { padding: 0.5rem 1rem; }
  .logo-small { font-size: 0.85rem; }
  .session-id-badge { display: none; }
}