/* ══════════════════════════════════════════════════════════════
   ChatSphere — Full Design System
   ══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── CSS Variables ── */
:root {
  --bg:          #0a0a0f;
  --surface:     #12121a;
  --surface2:    #1a1a26;
  --glass:       rgba(255,255,255,0.04);
  --glass-border:rgba(255,255,255,0.08);
  --primary:     #c084fc;
  --primary-dim: rgba(192,132,252,0.15);
  --accent:      #f472b6;
  --accent-dim:  rgba(244,114,182,0.15);
  --glow:        #818cf8;
  --glow-dim:    rgba(129,140,248,0.15);
  --text:        #f1f5f9;
  --text-muted:  #64748b;
  --text-sub:    #94a3b8;
  --success:     #34d399;
  --danger:      #f87171;
  --warn:        #fbbf24;
  --radius:      16px;
  --radius-sm:   8px;
  --radius-xl:   24px;
  --transition:  all 0.2s cubic-bezier(0.4,0,0.2,1);
  --shadow:      0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(192,132,252,0.15);
}

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

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

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── Animated Background ── */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  animation: float-orb var(--dur, 20s) ease-in-out infinite alternate;
}

.orb-1 { width: 500px; height: 500px; background: var(--primary); top: -200px; left: -100px; --dur: 22s; }
.orb-2 { width: 400px; height: 400px; background: var(--accent); bottom: -100px; right: -100px; --dur: 18s; }
.orb-3 { width: 300px; height: 300px; background: var(--glow); top: 40%; left: 50%; --dur: 25s; }

@keyframes float-orb {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Particle canvas */
#particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ── Layout ── */
.page { position: relative; z-index: 1; }

/* ── Glass Card ── */
.glass {
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 4px 20px rgba(192,132,252,0.3);
}
.btn-primary:hover { box-shadow: 0 6px 30px rgba(192,132,252,0.5); transform: translateY(-1px); }

.btn-ghost {
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-danger {
  background: rgba(248,113,113,0.15);
  color: var(--danger);
  border: 1px solid rgba(248,113,113,0.3);
}
.btn-danger:hover { background: rgba(248,113,113,0.25); }

.btn-success {
  background: rgba(52,211,153,0.15);
  color: var(--success);
  border: 1px solid rgba(52,211,153,0.3);
}
.btn-success:hover { background: rgba(52,211,153,0.25); }

.btn-icon {
  padding: 10px;
  border-radius: 50%;
}

/* ── Inputs ── */
.input {
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  padding: 12px 16px;
  outline: none;
  transition: var(--transition);
  width: 100%;
}

.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-dim);
}

.input::placeholder { color: var(--text-muted); }

/* ── Online Badge ── */
.online-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.2);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--success);
  font-weight: 600;
  animation: pulse-badge 2s ease-in-out infinite;
}

.online-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-badge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52,211,153,0.2); }
  50% { box-shadow: 0 0 0 6px rgba(52,211,153,0); }
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

/* ── ━━━━━━━━━━━━━━━━━━━━━━ LANDING PAGE ━━━━━━━━━━━━━━━━━━━━━━ ── */

.landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 48px;
}

.landing-hero {
  text-align: center;
  max-width: 600px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.logo-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 32px rgba(192,132,252,0.4);
  animation: logo-float 3s ease-in-out infinite;
}

@keyframes logo-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.logo-name {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent), var(--glow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-sub);
  margin-bottom: 32px;
}

/* Nickname input */
.nickname-wrap {
  position: relative;
  max-width: 380px;
  margin: 0 auto 32px;
}

.nickname-wrap .input {
  padding-left: 48px;
  font-size: 1rem;
  text-align: center;
  letter-spacing: 0.02em;
}

.nickname-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  pointer-events: none;
}

/* Mode Grid */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  width: 100%;
}

.mode-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: block;
}

.mode-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-gradient, linear-gradient(135deg, var(--primary-dim), transparent));
  opacity: 0;
  transition: opacity 0.3s;
}

.mode-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 12px 40px rgba(192,132,252,0.2), 0 0 0 1px rgba(192,132,252,0.3);
}

.mode-card:hover::before { opacity: 1; }

.mode-card.mode-global { --card-gradient: linear-gradient(135deg, rgba(52,211,153,0.12), transparent); }
.mode-card.mode-global:hover { border-color: var(--success); box-shadow: 0 12px 40px rgba(52,211,153,0.2); }

.mode-card.mode-speed { --card-gradient: linear-gradient(135deg, rgba(251,191,36,0.12), transparent); }
.mode-card.mode-speed:hover { border-color: var(--warn); box-shadow: 0 12px 40px rgba(251,191,36,0.2); }

.mode-card.mode-interest { --card-gradient: linear-gradient(135deg, rgba(129,140,248,0.12), transparent); }
.mode-card.mode-interest:hover { border-color: var(--glow); box-shadow: 0 12px 40px rgba(129,140,248,0.2); }

.mode-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
  display: block;
  position: relative;
  z-index: 1;
  transition: transform 0.3s;
}

.mode-card:hover .mode-icon { transform: scale(1.15) rotate(-5deg); }

.mode-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
}

.mode-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

.mode-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(251,191,36,0.2);
  color: var(--warn);
  border: 1px solid rgba(251,191,36,0.4);
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}


/* ── ━━━━━━━━━━━━━━━━━━━━━━ CHAT LAYOUT ━━━━━━━━━━━━━━━━━━━━━━━ ── */

.chat-page {
  height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

/* Header */
.chat-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  background: rgba(10,10,15,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.chat-back {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text);
  font-size: 1rem;
  flex-shrink: 0;
}

.chat-back:hover { border-color: var(--primary); color: var(--primary); }

.chat-partner {
  flex: 1;
  min-width: 0;
}

.partner-name {
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.partner-status {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.away   { background: var(--warn); }
.status-dot.typing { background: var(--primary); animation: pulse-dot 1s infinite; }

.chat-actions { display: flex; gap: 8px; }

/* Speed timer bar */
.speed-timer-bar {
  height: 3px;
  background: var(--glass-border);
  position: relative;
  flex-shrink: 0;
}

.speed-timer-fill {
  height: 100%;
  background: var(--success);
  transition: width 1s linear, background 1s linear;
  border-radius: 0 3px 3px 0;
}

.speed-timer-label {
  position: absolute;
  right: 16px;
  top: -24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* Messages area */
.messages-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

.messages-area::-webkit-scrollbar { width: 4px; }
.messages-area::-webkit-scrollbar-track { background: transparent; }
.messages-area::-webkit-scrollbar-thumb { background: var(--glass-border); border-radius: 4px; }

/* Message bubbles */
.msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 75%;
  animation: msg-in 0.25s cubic-bezier(0.4,0,0.2,1) forwards;
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(10px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.msg.outgoing { align-self: flex-end; flex-direction: row-reverse; }
.msg.incoming  { align-self: flex-start; }
.msg.system    { align-self: center; max-width: 90%; }

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.msg-avatar.you { background: linear-gradient(135deg, var(--glow), var(--primary)); }

.msg-body { display: flex; flex-direction: column; gap: 4px; }
.msg.outgoing .msg-body { align-items: flex-end; }

.msg-name {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0 12px;
}

.bubble {
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 100%;
  word-break: break-word;
  position: relative;
}

.bubble.incoming {
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-bottom-left-radius: 4px;
  color: var(--text);
}

.bubble.outgoing {
  background: linear-gradient(135deg, rgba(192,132,252,0.25), rgba(244,114,182,0.15));
  border: 1px solid rgba(192,132,252,0.3);
  border-bottom-right-radius: 4px;
  color: var(--text);
}

.bubble.system-msg {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 6px 16px;
  text-align: center;
}

.bubble.confession-msg {
  background: linear-gradient(135deg, rgba(244,114,182,0.15), rgba(192,132,252,0.1));
  border: 1px solid rgba(244,114,182,0.3);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-style: italic;
  color: var(--accent);
  max-width: 480px;
}

.msg-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 0 12px;
}

/* Typing indicator */
.typing-indicator {
  display: none;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.typing-indicator.visible { display: flex; }

.typing-dot {
  width: 7px;
  height: 7px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: bounce-dot 1.2s ease-in-out infinite;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce-dot {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
  40%            { transform: translateY(-8px); opacity: 1; }
}

/* ── Status overlay (waiting/connecting) ── */
.status-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,15,0.95);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 10;
  transition: opacity 0.4s;
}

.status-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.connecting-ring {
  width: 80px;
  height: 80px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.status-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.status-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 280px;
}

/* ── Input Bar ── */
.input-bar {
  padding: 16px 20px;
  background: rgba(10,10,15,0.9);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

.emoji-panel {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px;
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  max-height: 140px;
  overflow-y: auto;
}

.emoji-panel.open { display: flex; }

.emoji-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  padding: 4px;
  border-radius: 6px;
  transition: transform 0.15s;
}

.emoji-btn:hover { transform: scale(1.3); background: var(--glass); }

.input-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.msg-input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 12px 20px;
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  outline: none;
  resize: none;
  max-height: 120px;
  overflow-y: auto;
  transition: var(--transition);
  line-height: 1.5;
}

.msg-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-dim);
}

.msg-input::placeholder { color: var(--text-muted); }

.send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(192,132,252,0.3);
  flex-shrink: 0;
}

.send-btn:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(192,132,252,0.5); }
.send-btn:active { transform: scale(0.95); }

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
  color: var(--text-muted);
  flex-shrink: 0;
}

.icon-btn:hover { border-color: var(--primary); color: var(--primary); }

.action-bar {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}


/* ── ━━━━━━━━━━━━━━━━━━━━ ROOM PAGE ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ── */

.room-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.room-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 700px;
  width: 100%;
}

.room-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.room-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.room-code-display {
  background: var(--surface2);
  border: 1px solid rgba(192,132,252,0.3);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.room-code-display::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(192,132,252,0.1), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.room-code-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.code-input-boxes {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.code-box {
  width: 44px;
  height: 52px;
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  outline: none;
  transition: var(--transition);
  text-transform: uppercase;
}

.code-box:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-dim);
}


/* ── ━━━━━━━━━━━━━━━━━━━━ INTERESTS PAGE ━━━━━━━━━━━━━━━━━━━━━━ ── */

.interests-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.interests-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 680px;
  width: 100%;
}

.interest-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.interest-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-color, rgba(192,132,252,0.1));
  opacity: 0;
  transition: opacity 0.3s;
}

.interest-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--interest-color, var(--primary));
  box-shadow: 0 12px 40px var(--interest-glow, rgba(192,132,252,0.2));
}

.interest-card:hover::before { opacity: 1; }

.interest-emoji {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  transition: transform 0.3s;
}

.interest-card:hover .interest-emoji { transform: scale(1.2) rotate(-5deg); }

.interest-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
}

.interest-count {
  font-size: 0.8rem;
  color: var(--success);
  font-weight: 600;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

/* ── ━━━━━━━━━━━━━━━━━━━ NOTIFICATIONS ━━━━━━━━━━━━━━━━━━━━━━━━ ── */

.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  max-width: 300px;
  pointer-events: all;
  animation: toast-in 0.3s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(20px);
}

.toast.success { border-color: rgba(52,211,153,0.4); color: var(--success); }
.toast.error   { border-color: rgba(248,113,113,0.4); color: var(--danger); }
.toast.info    { border-color: rgba(192,132,252,0.4); color: var(--primary); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 460px;
  width: 100%;
  transform: scale(0.95);
  transition: transform 0.3s;
  position: relative;
  box-shadow: var(--shadow), var(--shadow-glow);
}

.modal-overlay.open .modal { transform: scale(1); }

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close:hover { color: var(--text); }

/* Sound toggle */
.sound-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 50;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition);
}

.sound-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* Responsive */
@media (max-width: 640px) {
  .mode-grid { grid-template-columns: repeat(2, 1fr); }
  .room-cards { grid-template-columns: 1fr; }
  .interests-grid { grid-template-columns: repeat(2, 1fr); }
  .chat-header { padding: 12px 16px; }
  .messages-area { padding: 16px; }
  .input-bar { padding: 12px 14px; }
  .msg { max-width: 90%; }
}

@media (max-width: 400px) {
  .mode-grid { grid-template-columns: 1fr; max-width: 280px; }
  .interests-grid { grid-template-columns: 1fr; }
}

/* ── Utility ── */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.divider { height: 1px; background: var(--glass-border); width: 100%; }