* { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --font-body: 'Sora', sans-serif;
    --font-display: 'Rajdhani', sans-serif;
    --font-mono: 'Azeret Mono', monospace;
    --bg:      #040814;
    --card:    rgba(18, 22, 40, 0.88);
    --border:  rgba(255, 255, 255, 0.07);
    --text:    #dde3ee;
    --muted:   rgba(195, 210, 230, 0.50);
    --accent:  #22d3ee;
    --accent2: #f59e0b;
    --danger:  #f87171;
  }
  body {
    font-family: var(--font-body);
    background: #050710;
    background-image:
      radial-gradient(ellipse 820px 620px at 18% 24%, rgba(34,211,238,0.08) 0%, transparent 70%),
      radial-gradient(ellipse 660px 520px at 82% 68%, rgba(245,158,11,0.06) 0%, transparent 70%);
    color: var(--text); min-height: 100vh;
    display: flex; align-items: center; justify-content: center; flex-direction: column;
    overflow: hidden;
  }
  body::before {
    content: ''; position: fixed; inset: 0;
    background:
      radial-gradient(900px 600px at 15% 20%, rgba(34,211,238,0.10), transparent 60%),
      radial-gradient(800px 520px at 85% 25%, rgba(245,158,11,0.07), transparent 60%),
      linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
      linear-gradient(180deg, rgba(255,255,255,0.014) 1px, transparent 1px);
    background-size: auto, auto, 52px 52px, 52px 52px;
    pointer-events: none; z-index: -1;
  }

  .unlock-card {
    background: radial-gradient(circle at top right, rgba(34,211,238,0.13), transparent 34%), linear-gradient(160deg, rgba(14,25,45,0.96), rgba(7,14,28,0.94), rgba(4,10,22,0.96));
    border: 1px solid rgba(148,178,211,0.13);
    border-top: 1px solid rgba(255,255,255,0.15);
    border-radius: 28px;
    padding: 44px 36px 36px;
    width: 380px;
    max-width: 92vw;
    backdrop-filter: blur(40px) saturate(1.4);
    box-shadow: 0 0 1px rgba(255,255,255,0.1), 0 0 70px rgba(34,211,238,0.08), 0 30px 80px rgba(0,0,0,0.5);
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .unlock-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent 5%, rgba(255,255,255,0.15) 20%, rgba(34,211,238,0.42) 42%, rgba(245,158,11,0.34) 64%, rgba(255,255,255,0.15) 80%, transparent 95%);
  }
  .unlock-card::after {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 40%;
    background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent);
    border-radius: 28px 28px 0 0;
    pointer-events: none;
  }

  .brand-icon {
    font-size: 52px; margin-bottom: 8px;
    background: linear-gradient(135deg, #22d3ee, #f59e0b);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 22px rgba(34,211,238,0.26));
    position: relative; z-index: 1;
  }
  .unlock-title {
    font-family: var(--font-display);
    font-size: 26px; font-weight: 700;
    letter-spacing: 1.4px; margin-bottom: 2px;
    background: linear-gradient(135deg, #dffaff, #7dd3fc 45%, #facc15);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    position: relative; z-index: 1;
  }
  .unlock-sub {
    color: var(--muted); font-size: 12px;
    letter-spacing: 2.2px; text-transform: uppercase;
    font-family: var(--font-display);
    font-weight: 700;
    margin-bottom: 28px;
    position: relative; z-index: 1;
  }

  .pin-dots {
    display: flex; justify-content: center; gap: 12px;
    margin-bottom: 28px;
    position: relative; z-index: 1;
  }
  .pin-dot {
    width: 11px; height: 11px;
    border-radius: 50%;
    border: 1.5px solid rgba(34,211,238,0.26);
    background: transparent;
    transition: all 0.18s ease;
  }
  .pin-dot.filled {
    background: linear-gradient(135deg, #22d3ee, #f59e0b);
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(34,211,238,0.38);
  }
  .pin-dot.error {
    background: var(--danger);
    border-color: var(--danger);
    box-shadow: 0 0 10px rgba(248,113,113,0.38);
  }
  .pin-dot.success {
    background: #34d399;
    border-color: #34d399;
    box-shadow: 0 0 10px rgba(52,211,153,0.38);
  }

  .keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 260px;
    margin: 0 auto 20px;
    position: relative; z-index: 1;
  }
  .key {
    background: linear-gradient(180deg, rgba(31,48,73,0.90), rgba(10,18,34,0.98));
    border: 1px solid rgba(148,178,211,0.14);
    border-top: 1px solid rgba(255,255,255,0.10);
    border-radius: 11px;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 600;
    padding: 14px 0;
    cursor: pointer;
    transition: all 0.12s ease;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 3px 8px rgba(0,0,0,0.30);
  }
  .key::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 45%;
    background: linear-gradient(180deg, rgba(255,255,255,0.05), transparent);
    border-radius: 11px 11px 0 0;
    pointer-events: none;
  }
  .key:hover {
    background: rgba(34,211,238,0.12);
    border-color: rgba(34,211,238,0.28);
    transform: scale(1.02);
  }
  .key:active {
    transform: scale(0.95);
    background: rgba(34,211,238,0.18);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.28);
  }
  .key.fn {
    font-size: 16px;
    color: var(--muted);
    background: rgba(255,255,255,0.025);
  }
  .key.fn:active { background: rgba(255,255,255,0.06); }

  .unlock-status {
    font-size: 12px;
    color: var(--muted);
    min-height: 20px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
    position: relative; z-index: 1;
  }
  .unlock-status.error { color: var(--danger); }
  .unlock-status.success { color: #22c55e; }

  .unlock-footer {
    color: rgba(255,255,255,0.2);
    font-size: 10px;
    margin-top: 16px;
    letter-spacing: 0.5px;
    position: relative; z-index: 1;
  }

  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-10px); }
    40% { transform: translateX(10px); }
    60% { transform: translateX(-6px); }
    80% { transform: translateX(6px); }
  }
  .shake { animation: shake 0.4s ease; }

  @keyframes unlockPulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
    100% { transform: scale(1); opacity: 1; }
  }
  .unlock-pulse { animation: unlockPulse 0.5s ease; }

  /* ══ Premium Light Mode ══ */
  [data-theme="light"] body {
    background: #f5f8fc;
    background-image:
      radial-gradient(ellipse 800px 600px at 20% 30%, rgba(8,145,178,0.055) 0%, transparent 70%),
      radial-gradient(ellipse 600px 500px at 80% 70%, rgba(217,119,6,0.04) 0%, transparent 70%);
  }
  [data-theme="light"] body::before {
    background:
      radial-gradient(900px 600px at 15% 20%, rgba(8,145,178,0.065), transparent 60%),
      radial-gradient(800px 520px at 85% 25%, rgba(217,119,6,0.05), transparent 60%);
  }
  [data-theme="light"] .unlock-card {
    background: #ffffff;
    border: 1px solid rgba(15,23,42,0.08);
    border-top: 1px solid rgba(15,23,42,0.06);
    box-shadow: 0 25px 60px -12px rgba(0,0,0,0.12), 0 0 0 1px rgba(15,23,42,0.04);
    backdrop-filter: blur(20px);
  }
  [data-theme="light"] .unlock-card::before {
    background: linear-gradient(90deg, transparent 5%, rgba(15,23,42,0.06) 20%, rgba(124,58,237,0.15) 40%, rgba(236,72,153,0.12) 60%, rgba(15,23,42,0.06) 80%, transparent 95%);
  }
  [data-theme="light"] .unlock-card::after {
    background: linear-gradient(180deg, rgba(248,250,252,0.5), transparent);
  }
  [data-theme="light"] .brand-icon {
    background: linear-gradient(135deg, #0891b2, #d97706);
    -webkit-background-clip: text;
  }
  [data-theme="light"] .unlock-title {
    background: linear-gradient(135deg, #0e7490, #b45309);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  }
  [data-theme="light"] .unlock-sub { color: #64748b; }
  [data-theme="light"] .pin-dot { border-color: rgba(8,145,178,0.18); }
  [data-theme="light"] .pin-dot.filled {
    background: linear-gradient(135deg, #0891b2, #d97706);
    border-color: #0891b2;
    box-shadow: 0 0 10px rgba(8,145,178,0.3);
  }
  [data-theme="light"] .key {
    background: rgba(248,250,252,0.8);
    border: 1px solid rgba(15,23,42,0.08);
    border-top: 1px solid rgba(15,23,42,0.06);
    color: #0f172a;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  }
  [data-theme="light"] .key::before {
    background: linear-gradient(180deg, rgba(255,255,255,0.8), transparent);
  }
  [data-theme="light"] .key:hover {
    background: rgba(8,145,178,0.07);
    border-color: rgba(8,145,178,0.16);
  }
  [data-theme="light"] .key:active {
    background: rgba(8,145,178,0.12);
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.08);
  }
  [data-theme="light"] .key.fn { color: #64748b; background: rgba(248,250,252,0.5); }
  [data-theme="light"] .unlock-status { color: #64748b; }
  [data-theme="light"] .unlock-footer { color: rgba(15,23,42,0.25); }

/* ── User Appearance: login tint + font presets ── */
:root,
html[data-tint="aqua"] {
  --tint-primary: #22d3ee;
  --tint-secondary: #f59e0b;
  --tint-tertiary: #2dd4bf;
  --tint-primary-rgb: 34, 211, 238;
  --tint-secondary-rgb: 245, 158, 11;
  --tint-tertiary-rgb: 45, 212, 191;
}
html[data-tint="gold"] { --accent: #f59e0b; --accent2: #fb923c; --tint-primary: #f59e0b; --tint-secondary: #f97316; --tint-tertiary: #fde047; --tint-primary-rgb: 245, 158, 11; --tint-secondary-rgb: 249, 115, 22; --tint-tertiary-rgb: 253, 224, 71; }
html[data-tint="emerald"] { --accent: #10b981; --accent2: #14b8a6; --tint-primary: #10b981; --tint-secondary: #14b8a6; --tint-tertiary: #84cc16; --tint-primary-rgb: 16, 185, 129; --tint-secondary-rgb: 20, 184, 166; --tint-tertiary-rgb: 132, 204, 22; }
html[data-tint="ruby"] { --accent: #fb7185; --accent2: #f97316; --tint-primary: #fb7185; --tint-secondary: #f43f5e; --tint-tertiary: #f97316; --tint-primary-rgb: 251, 113, 133; --tint-secondary-rgb: 244, 63, 94; --tint-tertiary-rgb: 249, 115, 22; }
html[data-tint="violet"] { --accent: #a78bfa; --accent2: #22d3ee; --tint-primary: #a78bfa; --tint-secondary: #6366f1; --tint-tertiary: #22d3ee; --tint-primary-rgb: 167, 139, 250; --tint-secondary-rgb: 99, 102, 241; --tint-tertiary-rgb: 34, 211, 238; }
html[data-font-theme="terminal"] { --font-body: 'Sora', sans-serif; --font-display: 'Rajdhani', sans-serif; --font-mono: 'Azeret Mono', monospace; }
html[data-font-theme="institutional"] { --font-body: 'IBM Plex Sans', sans-serif; --font-display: 'IBM Plex Sans', sans-serif; --font-mono: 'IBM Plex Mono', monospace; }
html[data-font-theme="modern"] { --font-body: 'Plus Jakarta Sans', sans-serif; --font-display: 'Space Grotesk', sans-serif; --font-mono: 'JetBrains Mono', monospace; }
html[data-font-theme="quant"] { --font-body: 'Exo 2', sans-serif; --font-display: 'Exo 2', sans-serif; --font-mono: 'Roboto Mono', monospace; }
html[data-font-theme="editorial"] { --font-body: 'DM Sans', sans-serif; --font-display: 'Fraunces', serif; --font-mono: 'IBM Plex Mono', monospace; }
body {
  background-image:
    radial-gradient(ellipse 820px 620px at 18% 24%, rgba(var(--tint-primary-rgb),0.09) 0%, transparent 70%),
    radial-gradient(ellipse 660px 520px at 82% 68%, rgba(var(--tint-secondary-rgb),0.07) 0%, transparent 70%);
}
body::before {
  background:
    radial-gradient(900px 600px at 15% 20%, rgba(var(--tint-primary-rgb),0.11), transparent 60%),
    radial-gradient(800px 520px at 85% 25%, rgba(var(--tint-secondary-rgb),0.08), transparent 60%),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.014) 1px, transparent 1px);
  background-size: auto, auto, 52px 52px, 52px 52px;
}
.unlock-card {
  background: radial-gradient(circle at top right, rgba(var(--tint-primary-rgb),0.14), transparent 34%), linear-gradient(160deg, rgba(14,25,45,0.96), rgba(7,14,28,0.94), rgba(4,10,22,0.96));
  border-color: rgba(var(--tint-primary-rgb),0.18);
  box-shadow: 0 0 1px rgba(255,255,255,0.1), 0 0 70px rgba(var(--tint-primary-rgb),0.09), 0 30px 80px rgba(0,0,0,0.5);
}
.unlock-card::before { background: linear-gradient(90deg, transparent 5%, rgba(255,255,255,0.15) 20%, rgba(var(--tint-primary-rgb),0.44) 42%, rgba(var(--tint-secondary-rgb),0.36) 64%, rgba(255,255,255,0.15) 80%, transparent 95%); }
.brand-icon,
.unlock-title {
  background: linear-gradient(135deg, color-mix(in srgb, var(--tint-primary) 35%, white), var(--tint-primary) 48%, var(--tint-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.pin-dot { border-color: rgba(var(--tint-primary-rgb),0.28); }
.pin-dot.filled { background: linear-gradient(135deg, var(--tint-primary), var(--tint-secondary)); box-shadow: 0 0 12px rgba(var(--tint-primary-rgb),0.40); }
.key:hover { background: rgba(var(--tint-primary-rgb),0.12); border-color: rgba(var(--tint-primary-rgb),0.28); }
.key:active { background: rgba(var(--tint-primary-rgb),0.18); }
.login-appearance-toggle {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 5;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(148,178,211,0.18);
  background: linear-gradient(180deg, rgba(31,48,73,0.92), rgba(10,18,34,0.98));
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 16px 32px rgba(0,0,0,0.22), inset 0 1px 0 rgba(255,255,255,0.12);
}
.login-appearance-dot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--tint-primary), var(--tint-secondary));
  box-shadow: 0 0 16px rgba(var(--tint-primary-rgb),0.28);
}
.login-appearance-panel {
  position: fixed;
  top: 66px;
  right: 18px;
  z-index: 6;
  width: 260px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(var(--tint-primary-rgb),0.22);
  background: radial-gradient(circle at top right, rgba(var(--tint-primary-rgb),0.16), transparent 36%), linear-gradient(180deg, rgba(13,24,44,0.98), rgba(6,13,26,0.99));
  box-shadow: 0 24px 60px rgba(0,0,0,0.34), inset 0 1px 0 rgba(255,255,255,0.12);
}
.login-appearance-panel[hidden] { display: none !important; }
.login-appearance-title { font-family: var(--font-display); font-weight: 700; font-size: 19px; margin-bottom: 10px; }
.login-appearance-label { color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; margin: 12px 0 8px; }
.login-appearance-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.login-appearance-grid button { width: 34px; height: 34px; cursor: pointer; }
.login-appearance-grid button.active,
.login-font-list button.active { outline: 2px solid var(--tint-primary); outline-offset: 2px; }
.swatch-aqua { background: linear-gradient(135deg, #22d3ee, #2dd4bf 52%, #f59e0b); }
.swatch-gold { background: linear-gradient(135deg, #fde047, #f59e0b 55%, #f97316); }
.swatch-emerald { background: linear-gradient(135deg, #84cc16, #10b981 55%, #14b8a6); }
.swatch-ruby { background: linear-gradient(135deg, #fb7185, #f43f5e 55%, #f97316); }
.swatch-violet { background: linear-gradient(135deg, #a78bfa, #6366f1 55%, #22d3ee); }
.login-font-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.login-font-list button {
  border: 1px solid rgba(148,178,211,0.18);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  border-radius: 12px;
  padding: 9px 10px;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
}
[data-theme="light"] .login-appearance-toggle,
[data-theme="light"] .login-appearance-panel {
  background: rgba(255,255,255,0.96);
  color: #0f172a;
  border-color: rgba(15,23,42,0.10);
  box-shadow: 0 18px 40px rgba(15,23,42,0.12), inset 0 1px 0 rgba(255,255,255,0.94);
}
[data-theme="light"] .login-font-list button { background: rgba(248,250,252,0.9); color: #0f172a; border-color: rgba(15,23,42,0.10); }
@media (max-width: 520px) {
  .login-appearance-toggle { top: 12px; right: 12px; }
  .login-appearance-panel { top: 58px; right: 12px; width: calc(100vw - 24px); }
}