:root {
  --bg: #0a0606;
  --bg2: #170c0c;
  --card: #1f1212;
  --card2: #2a1818;
  --border: #3a1f1f;
  --accent: #dc2626;
  --accent2: #ef4444;
  --accent3: #f87171;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --green: #10b981;
  --red: #ef4444;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 32px rgba(220,38,38,0.20);
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Layout ── */
.page { display: none; min-height: 100vh; flex-direction: column; }
.page.active { display: flex; }

/* ── Utility ── */
.hidden { display: none !important; }
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500;
  background: rgba(220,38,38,.15); color: var(--accent2); border: 1px solid rgba(220,38,38,.3);
}
.error-msg { color: var(--red); font-size: 13px; margin-top: 8px; display: none; }
.error-msg.show { display: block; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ══════════ SETUP PAGE ══════════ */
.setup-page {
  align-items: center; justify-content: center; padding: 20px;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(220,38,38,.28) 0%, transparent 70%);
}
.setup-card {
  position: relative;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px; width: 100%; max-width: 460px;
  box-shadow: var(--shadow);
}
.setup-logo { text-align: center; margin-bottom: 32px; }
.logo-icon {
  width: 56px; height: 56px; background: linear-gradient(135deg, var(--accent), var(--accent3));
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px; font-size: 24px;
}
.setup-logo h1 { font-size: 26px; font-weight: 800; }
.setup-logo h1 span {
  background: linear-gradient(90deg, var(--accent2), var(--accent3));
  background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.setup-logo p { color: var(--text2); font-size: 14px; margin-top: 4px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text2); margin-bottom: 6px; font-weight: 500; }

.form-group input, .form-group select {
  width: 100%; padding: 12px 14px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 14px; outline: none; transition: border-color .2s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--text3); }
.form-group select option { background: var(--card2); }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.interests-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.interest-chip {
  padding: 7px 14px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 20px; font-size: 13px; cursor: pointer;
  transition: all .15s; user-select: none; -webkit-tap-highlight-color: transparent;
}
.interest-chip:hover { border-color: var(--accent2); }
.interest-chip:active { transform: scale(0.93); }
.interest-chip.selected {
  background: rgba(220,38,38,.2); border-color: var(--accent); color: var(--accent2);
}

/* 18+ / ToS checkbox */
.check-row {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; color: var(--text2); line-height: 1.45;
  margin-top: 14px; cursor: pointer; user-select: none;
}
.check-row input[type=checkbox] {
  width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px;
  accent-color: var(--accent); cursor: pointer;
}
.check-row a { color: var(--accent2); text-decoration: none; }
.check-row a:hover { text-decoration: underline; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.65);
  display: none; align-items: center; justify-content: center;
  padding: 20px; z-index: 500; backdrop-filter: blur(6px);
}
.modal-overlay.open { display: flex; }
.modal-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  width: 100%; max-width: 520px; max-height: 80vh; display: flex; flex-direction: column;
  box-shadow: var(--shadow);
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px; border-bottom: 1px solid var(--border);
}
.modal-head h3 { font-size: 17px; font-weight: 700; }
.modal-close {
  background: transparent; border: none; color: var(--text2); cursor: pointer;
  font-size: 18px; width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent; transition: background .12s;
}
.modal-close:hover { background: var(--card2); color: var(--text); }
.modal-body {
  padding: 18px 22px; overflow-y: auto; font-size: 14px;
  color: var(--text2); line-height: 1.6;
}
.modal-body p { margin-bottom: 12px; }
.modal-body strong { color: var(--text); }

.report-reasons { display: flex; flex-direction: column; gap: 8px; }
.report-reason {
  padding: 12px 14px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); cursor: pointer;
  font-size: 14px; text-align: left; transition: all .15s;
  -webkit-tap-highlight-color: transparent;
}
.report-reason:hover { border-color: var(--red); background: rgba(239,68,68,.12); color: #fca5a5; }
.report-reason:active { transform: scale(0.98); }

/* Buttons */
.btn {
  width: 100%; padding: 13px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; border: none; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: opacity .2s, transform .12s, box-shadow .2s;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { opacity: .92; box-shadow: 0 6px 20px rgba(220,38,38,.40); }
.btn:active { transform: scale(0.96); opacity: .85; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn-secondary {
  background: transparent; border: 1px solid var(--border);
  color: var(--text2);
}
.btn-secondary:hover { border-color: var(--text3); box-shadow: none; }
.btn-secondary:active { transform: scale(0.95); }
.btn-danger { background: linear-gradient(135deg, #b91c1c, #7f1d1d); }
.btn-sm { width: auto; padding: 8px 18px; font-size: 13px; }

/* ══════════ NAVBAR ══════════ */
.navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border);
  background: rgba(10,6,6,.85); backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 100;
}
.nav-logo {
  display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
  transition: opacity .15s, transform .12s;
}
.nav-logo:hover { opacity: .8; }
.nav-logo:active { transform: scale(0.95); }
.nav-logo span {
  background: linear-gradient(90deg, var(--accent2), var(--accent3));
  background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--card2);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  cursor: pointer; transition: transform .15s, background .15s;
  -webkit-tap-highlight-color: transparent;
}
.nav-avatar:hover { background: var(--border); }
.nav-avatar:active { transform: scale(0.9); }

.online-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 20px; font-size: 12px; font-weight: 600;
  background: rgba(16,185,129,.12); color: var(--green); border: 1px solid rgba(16,185,129,.3);
  cursor: default;
}
.online-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  animation: onlinePulse 1.6s ease-in-out infinite;
}
@keyframes onlinePulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.85); }
}

/* Connection banner */
.conn-banner {
  position: fixed; top: 0; left: 0; right: 0; z-index: 700;
  padding: 9px 16px; text-align: center;
  font-size: 13px; font-weight: 600;
  background: #7f1d1d; color: #fecaca;
  border-bottom: 1px solid #b91c1c;
  transform: translateY(-100%); transition: transform .25s ease;
  pointer-events: none;
}
.conn-banner.show { transform: translateY(0); }
.conn-banner.online {
  background: #064e3b; color: #6ee7b7;
  border-bottom-color: rgba(16,185,129,.5);
}

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  padding: 10px 18px; border-radius: 12px; font-size: 13px;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
  z-index: 600; box-shadow: 0 6px 24px rgba(0,0,0,.4); max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.warn { border-color: var(--red); color: #fca5a5; }

.profile-menu {
  position: absolute; top: 48px; right: 0;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 6px; min-width: 200px; box-shadow: var(--shadow); z-index: 200;
  display: none; opacity: 0; transform: translateY(-6px);
  transition: opacity .15s, transform .15s;
}
.profile-menu.open { display: block; opacity: 1; transform: translateY(0); }
.menu-item {
  padding: 10px 14px; border-radius: 8px; cursor: pointer;
  font-size: 14px; transition: background .12s; display: flex; align-items: center; gap: 8px;
  -webkit-tap-highlight-color: transparent;
}
.menu-item:hover { background: var(--card2); }
.menu-item:active { background: var(--border); }
.menu-item.danger { color: var(--red); }

/* ══════════ DASHBOARD ══════════ */
.dashboard-page {
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(220,38,38,.20) 0%, transparent 65%);
}
.dash-main {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 32px 20px;
}

/* ── Idle State ── */
.idle-state {
  display: flex; flex-direction: column; align-items: center;
  gap: 20px; width: 100%; max-width: 500px;
}
.section-label {
  font-size: 12px; font-weight: 600; color: var(--text2);
  text-transform: uppercase; letter-spacing: .08em;
  align-self: flex-start;
}

/* Mode cards */
.mode-cards { display: flex; gap: 14px; width: 100%; }
.mode-card {
  flex: 1; padding: 20px 16px; background: var(--card);
  border: 2px solid var(--border); border-radius: var(--radius);
  cursor: pointer; transition: all .18s; text-align: center;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.mode-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(220,38,38,.25); }
.mode-card:active { transform: scale(0.96) translateY(0); }
.mode-card.active { border-color: var(--accent); background: rgba(220,38,38,.14); }
.mode-card#card-voice.active { border-color: var(--accent3); background: rgba(248,113,113,.12); }
.mode-card-icon { font-size: 36px; margin-bottom: 8px; }
.mode-card-title { font-size: 14px; font-weight: 700; }

/* Filters panel */
.filters-panel {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; width: 100%;
  display: flex; flex-direction: column; gap: 16px;
}
.filter-row {
  display: flex; align-items: center; gap: 16px;
}
.filter-label {
  font-size: 13px; color: var(--text2); font-weight: 500;
  min-width: 42px;
}
.age-range {
  display: flex; align-items: center; gap: 8px; flex: 1;
}
.age-range input[type=range] { flex: 1; accent-color: var(--accent); cursor: pointer; }
.range-val { font-size: 13px; color: var(--accent2); font-weight: 600; min-width: 24px; text-align: center; }

.gender-btns { display: flex; gap: 8px; flex: 1; }
.gender-btn {
  flex: 1; padding: 8px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text2); cursor: pointer; font-size: 13px;
  text-align: center; transition: all .15s; user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.gender-btn:hover { border-color: var(--accent2); color: var(--text); }
.gender-btn:active { transform: scale(0.94); }
.gender-btn.active { background: rgba(220,38,38,.2); border-color: var(--accent); color: var(--accent2); font-weight: 600; }

/* Find button */
.find-btn {
  width: 100%; padding: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none; border-radius: var(--radius-sm); color: #fff;
  font-size: 16px; font-weight: 700; cursor: pointer;
  transition: all .18s; display: flex; align-items: center; justify-content: center; gap: 8px;
  -webkit-tap-highlight-color: transparent; position: relative; overflow: hidden;
}
.find-btn::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(255,255,255,0); transition: background .12s;
}
.find-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(220,38,38,.50); }
.find-btn:active { transform: scale(0.97) translateY(0); }
.find-btn:active::before { background: rgba(255,255,255,.12); }
.find-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }

.find-btn.searching {
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  animation: findPulse 1.8s ease-in-out infinite;
  cursor: not-allowed;
}
@keyframes findPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,.55); }
  50% { box-shadow: 0 0 0 16px rgba(239,68,68,0); }
}
.search-spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2.5px solid rgba(255,255,255,.4); border-top-color: #fff;
  border-radius: 50%; animation: spinFast 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes spinFast { to { transform: rotate(360deg); } }

/* ── Searching State ── */
.searching-state {
  display: none; flex-direction: column; align-items: center;
  gap: 16px; text-align: center;
}
.searching-state h2 { font-size: 22px; font-weight: 700; }

.search-anim {
  position: relative; width: 130px; height: 130px;
  display: flex; align-items: center; justify-content: center;
}
.search-ring {
  position: absolute; border-radius: 50%;
  border: 3px solid transparent; animation: spinAnim linear infinite;
}
.search-ring.r1 { inset: 0;    border-top-color: var(--accent);  animation-duration: 1.4s; }
.search-ring.r2 { inset: 16px; border-top-color: var(--accent2); animation-duration: 1s; animation-direction: reverse; }
.search-ring.r3 { inset: 32px; border-top-color: var(--accent3); animation-duration: 1.9s; }
@keyframes spinAnim { to { transform: rotate(360deg); } }

.search-dot {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; animation: dotPulse 1.4s ease-in-out infinite;
}
.search-dot::after { content: '🔍'; }
@keyframes dotPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.12); } }

.dots::after {
  content: '';
  animation: dotsAnim 1.4s steps(4, end) infinite;
}
@keyframes dotsAnim {
  0%   { content: ''; }
  25%  { content: '.'; }
  50%  { content: '..'; }
  75%  { content: '...'; }
  100% { content: ''; }
}

.cancel-btn { margin-top: 4px; }

/* ══════════ CHAT PAGE ══════════ */
/* Lock the chat layout to the viewport so the input bar stays pinned at the
   bottom. 100dvh tracks the dynamic viewport (mobile URL bar / soft keyboard);
   100vh is the fallback for browsers without dvh support. */
.chat-page {
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}
.chat-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; background: var(--card); border-bottom: 1px solid var(--border);
}
.partner-info { display: flex; align-items: center; gap: 12px; }
.partner-avatar {
  width: 40px; height: 40px; border-radius: 50%; background: var(--card2);
  display: flex; align-items: center; justify-content: center; font-size: 20px;
}
.partner-name { font-weight: 600; }
.partner-status { font-size: 12px; color: var(--green); }
.chat-actions { display: flex; gap: 8px; }
.chat-body { flex: 1; display: flex; overflow: hidden; min-height: 0; }

/* Voice area */
.voice-area {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 32px; background: var(--bg); padding: 40px;
}
.voice-circle {
  width: 140px; height: 140px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 56px;
  position: relative;
}
.voice-circle.local { background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.voice-circle.remote { background: linear-gradient(135deg, var(--accent3), #b91c1c); }
.voice-circle.speaking::after {
  content: ''; position: absolute; inset: -8px; border-radius: 50%;
  border: 3px solid var(--accent); animation: ripple .8s linear infinite;
}
@keyframes ripple { to { inset: -20px; opacity: 0; } }

.voice-controls { display: flex; gap: 16px; }
.voice-btn {
  width: 56px; height: 56px; border-radius: 50%; border: none; cursor: pointer;
  font-size: 22px; transition: all .15s; display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.voice-btn:active { transform: scale(0.88); }
.voice-btn.mute { background: var(--card2); color: var(--text); }
.voice-btn.mute.active { background: var(--red); color: #fff; }
.voice-btn.end { background: var(--red); color: #fff; }
.voice-btn.next { background: var(--card2); color: var(--text); }

/* Text chat area */
.text-area { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.messages {
  flex: 1; padding: 20px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 10px;
}
.msg {
  max-width: 70%; padding: 10px 14px; border-radius: 16px;
  font-size: 14px; line-height: 1.5; word-wrap: break-word;
}
.msg.mine { background: var(--accent); align-self: flex-end; border-bottom-right-radius: 4px; }
.msg.theirs { background: var(--card2); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg-time { font-size: 11px; opacity: .6; margin-top: 4px; }
.msg.mine .msg-time { text-align: right; }
.system-msg { text-align: center; font-size: 13px; color: var(--text3); padding: 8px; }

.chat-input-area {
  padding: 16px; background: var(--card); border-top: 1px solid var(--border);
  display: flex; gap: 10px; align-items: flex-end;
}
.chat-input {
  flex: 1; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px; color: var(--text); font-size: 14px;
  outline: none; resize: none; max-height: 120px; transition: border-color .2s;
  font-family: inherit;
}
.chat-input:focus { border-color: var(--accent); }
.send-btn {
  width: 44px; height: 44px; border-radius: 12px; border: none;
  background: var(--accent); color: #fff; cursor: pointer; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: all .15s; flex-shrink: 0; -webkit-tap-highlight-color: transparent;
}
.send-btn:hover { background: var(--accent2); }
.send-btn:active { transform: scale(0.88); }

/* Emoji picker */
.emoji-btn {
  width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--bg2); color: var(--text); cursor: pointer; font-size: 20px;
  display: flex; align-items: center; justify-content: center;
  transition: all .15s; flex-shrink: 0; -webkit-tap-highlight-color: transparent;
}
.emoji-btn:hover { border-color: var(--accent); background: var(--card2); }
.emoji-btn:active { transform: scale(0.9); }

.emoji-panel {
  display: none;
  position: relative;
  margin: 0 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
  max-height: 220px;
  overflow-y: auto;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 4px;
  box-shadow: 0 -4px 16px rgba(0,0,0,.25);
}
.emoji-panel.open { display: grid; }
.emoji-item {
  width: 36px; height: 36px;
  background: transparent; border: none;
  font-size: 22px; cursor: pointer; border-radius: 8px;
  transition: background .12s, transform .08s;
  display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.emoji-item:hover { background: var(--card2); }
.emoji-item:active { transform: scale(0.85); background: var(--border); }

/* ══════════ LANGUAGE SWITCHER ══════════ */
.nav-right { display: flex; align-items: center; gap: 12px; }

.lang-switcher {
  position: relative;
  display: inline-block;
}
.lang-switcher-corner {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 5;
}

.lang-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text);
  font: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  -webkit-tap-highlight-color: transparent;
}
.lang-btn:hover { border-color: var(--accent2); }
.lang-btn .lang-code { letter-spacing: .04em; }
.lang-btn .lang-caret { font-size: 10px; color: var(--text3); margin-left: 2px; transition: transform .15s; }
.lang-switcher.open .lang-btn { border-color: var(--accent); background: var(--card2); }
.lang-switcher.open .lang-btn .lang-caret { transform: rotate(180deg); }

.lang-menu {
  position: absolute; top: calc(100% + 6px); right: 0;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px; min-width: 170px;
  box-shadow: var(--shadow);
  display: none; opacity: 0; transform: translateY(-6px);
  transition: opacity .15s, transform .15s;
  z-index: 250;
}
.lang-switcher.open .lang-menu {
  display: block; opacity: 1; transform: translateY(0);
}
.lang-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 8px;
  font-size: 14px; cursor: pointer;
  transition: background .12s;
  -webkit-tap-highlight-color: transparent;
}
.lang-item:hover { background: var(--card2); }
.lang-item:active { background: var(--border); }
.lang-item.active { background: rgba(220,38,38,.18); color: var(--accent2); font-weight: 600; }

/* ══════════ BACKGROUND MUSIC TOGGLE ══════════ */
#bgm { display: none; }
.bgm-toggle {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .12s;
  -webkit-tap-highlight-color: transparent;
  padding: 0;
  line-height: 1;
}
.bgm-toggle:hover { border-color: var(--accent2); transform: scale(1.06); }
.bgm-toggle:active { transform: scale(0.96); }
.bgm-toggle.muted { opacity: 0.78; }

/* ── Responsive ── */
@media (max-width: 520px) {
  .setup-card { padding: 28px 20px; }
  .mode-cards { gap: 10px; }
  .mode-card { padding: 16px 10px; }
  .filter-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .filter-label { min-width: auto; }
  .age-range, .gender-btns { width: 100%; }
  .navbar { padding: 12px 14px; }
  .nav-right { gap: 8px; }
  .lang-btn { padding: 5px 8px; font-size: 12px; }
  .lang-switcher-corner { top: 10px; right: 10px; }
  .bgm-toggle { top: 10px; left: 10px; width: 34px; height: 34px; font-size: 15px; }
}