:root {
  --surface: #101415;
  --on-surface: #e0e3e5;
  --on-surface-variant: #c3c6d7;
  --surface-container: #1d2022;
  --surface-container-low: #191c1e;
  --surface-container-lowest: #0b0f10;
  --surface-container-high: #272a2c;
  --surface-container-highest: #323537;
  --surface-bright: #363a3b;
  --surface-variant: #323537;
  --surface-dim: #101415;
  --surface-tint: #b4c5ff;
  --primary: #b4c5ff;
  --on-primary: #002a78;
  --primary-container: #2563eb;
  --on-primary-container: #eeefff;
  --on-primary-fixed: #00174b;
  --on-primary-fixed-variant: #003ea8;
  --secondary: #b9c7df;
  --on-secondary: #233144;
  --secondary-container: #3c4a5e;
  --on-secondary-container: #abb9d1;
  --secondary-fixed: #d5e3fc;
  --secondary-fixed-dim: #b9c7df;
  --on-secondary-fixed: #0d1c2e;
  --on-secondary-fixed-variant: #3a485b;
  --tertiary: #bec6e0;
  --on-tertiary: #283044;
  --tertiary-container: #656d84;
  --on-tertiary-container: #eef0ff;
  --tertiary-fixed: #dae2fd;
  --tertiary-fixed-dim: #bec6e0;
  --on-tertiary-fixed: #131b2e;
  --on-tertiary-fixed-variant: #3f465c;
  --error: #ffb4ab;
  --on-error: #690005;
  --error-container: #93000a;
  --on-error-container: #ffdad6;
  --outline: #8d90a0;
  --outline-variant: #434655;
  --inverse-surface: #e0e3e5;
  --inverse-on-surface: #2d3133;
  --inverse-primary: #0053db;
  --on-background: #e0e3e5;
  --background: #101415;
  --bento-hover-border: rgba(37, 99, 235, 0.5);
  --bento-hover-bg: rgba(30, 41, 59, 0.5);
  --glossy-gradient: radial-gradient(circle at top left, rgba(255, 255, 255, 0.12), transparent 40%);
  --hero-mesh-gradient:
    radial-gradient(ellipse 900px 600px at 12% -10%, rgba(37, 99, 235, 0.20), transparent 55%),
    radial-gradient(ellipse 700px 500px at 100% 15%, rgba(29, 78, 216, 0.14), transparent 60%),
    linear-gradient(180deg, var(--surface-container-lowest) 0%, var(--surface) 40%);
}

[data-theme="light"] {
  --surface: #f8f9fa;
  --on-surface: #1a1d1e;
  --on-surface-variant: #494d5c;
  --surface-container: #e8eaed;
  --surface-container-low: #f1f3f5;
  --surface-container-lowest: #ffffff;
  --surface-container-high: #dde0e4;
  --surface-container-highest: #d0d4d9;
  --surface-bright: #ffffff;
  --surface-variant: #e2e2e6;
  --surface-dim: #dadddf;
  --surface-tint: #2563eb;
  --primary: #2563eb;
  --on-primary: #ffffff;
  --primary-container: #2563eb;
  --on-primary-container: #ffffff;
  --on-primary-fixed: #ffffff;
  --on-primary-fixed-variant: #1d4ed8;
  --secondary: #475569;
  --on-secondary: #ffffff;
  --secondary-container: #e0e7ff;
  --on-secondary-container: #1e293b;
  --secondary-fixed: #e0e7ff;
  --secondary-fixed-dim: #c7d2fe;
  --on-secondary-fixed: #1e293b;
  --on-secondary-fixed-variant: #334155;
  --tertiary: #475569;
  --on-tertiary: #ffffff;
  --tertiary-container: #e0e7ff;
  --on-tertiary-container: #1e293b;
  --tertiary-fixed: #e0e7ff;
  --tertiary-fixed-dim: #c7d2fe;
  --on-tertiary-fixed: #1e293b;
  --on-tertiary-fixed-variant: #334155;
  --error: #dc2626;
  --on-error: #ffffff;
  --error-container: #fecaca;
  --on-error-container: #450a0a;
  --outline: #a1a1aa;
  --outline-variant: #d5d8dc;
  --inverse-surface: #1a1d1e;
  --inverse-on-surface: #f0f1f3;
  --inverse-primary: #b4c5ff;
  --on-background: #1a1d1e;
  --background: #f8f9fa;
  --bento-hover-border: rgba(37, 99, 235, 0.2);
  --bento-hover-bg: rgba(0, 0, 0, 0.04);
  --glossy-gradient: radial-gradient(circle at top left, rgba(37, 99, 235, 0.05), transparent 40%);
  --hero-mesh-gradient:
    radial-gradient(ellipse 900px 600px at 12% -10%, rgba(37, 99, 235, 0.10), transparent 55%),
    radial-gradient(ellipse 700px 500px at 100% 15%, rgba(29, 78, 216, 0.07), transparent 60%),
    linear-gradient(180deg, var(--surface-container-lowest) 0%, var(--surface) 40%);
}

html {
  transition: background-color 0.3s ease;
}

/* Shared compact action control used by the theme toggle across public pages. */
.icon-action {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--outline-variant);
  border-radius: 6px;
  background: transparent;
  transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease, transform 100ms ease;
}

.icon-action:hover {
  border-color: color-mix(in srgb, var(--primary) 35%, var(--outline-variant));
  background: var(--surface-container-high);
}

.icon-action:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.icon-action:active { transform: translateY(1px); }

.brand-gradient {
  background: linear-gradient(100deg, var(--primary-container), var(--on-primary-fixed-variant));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@media (max-width: 767px) {
  header .brand-gradient {
    font-size: 18px;
    line-height: 24px;
  }
  header a[href="index.html"] > svg {
    width: 22px;
    height: 22px;
  }
}

/* ===================== Glass header (overrides .bg-surface) ===================== */
header {
  background-color: color-mix(in srgb, var(--surface) 78%, transparent) !important;
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 55%, transparent);
}

/* ===================== Better brand gradient ===================== */
.brand-gradient {
  background: linear-gradient(
    115deg,
    color-mix(in srgb, var(--primary) 80%, white 20%) 0%,
    var(--primary-container) 50%,
    var(--on-primary-fixed-variant) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===================== Tier card featured ===================== */
.tier-featured {
  border-color: color-mix(in srgb, var(--primary-container) 60%, transparent) !important;
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--primary-container) 30%, transparent),
    0 12px 40px -8px color-mix(in srgb, var(--primary-container) 40%, transparent);
}

/* ===================== Smooth scroll ===================== */
html {
  scroll-behavior: smooth;
}

/* ===================== Focus ring ===================== */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===================== Selection color ===================== */
::selection {
  background-color: color-mix(in srgb, var(--primary-container) 35%, transparent);
  color: var(--on-surface);
}

/* ===================== Better scrollbar (webkit) ===================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--surface-container-lowest); }
::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: var(--outline); }

/* ===================== Input autofill for dark mode ===================== */
input:-webkit-autofill,
input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px var(--surface-container) inset;
  -webkit-text-fill-color: var(--on-surface);
}

/* ===================== Admin custom select ===================== */
.admin-select-box {
  position: relative;
  width: 100%;
  min-width: 0;
}

select.admin-select-native.admin-select-native {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  pointer-events: none;
}

.admin-select-trigger {
  width: 100%;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 0.75rem;
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  background-color: var(--surface-container-lowest);
  color: var(--on-surface);
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  text-align: left;
  cursor: pointer;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
}

.admin-select-trigger:hover { border-color: var(--outline); }
.admin-select-trigger:focus-visible {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 16%, transparent);
}
.admin-select-trigger:disabled { opacity: 0.55; cursor: not-allowed; }
.admin-select-trigger .admin-select-current {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.admin-select-trigger .material-symbols-outlined {
  flex: none;
  font-size: 1.25rem;
  color: var(--on-surface-variant);
  transition: transform 150ms ease;
}
.admin-select-trigger[aria-expanded="true"] .material-symbols-outlined { transform: rotate(180deg); }

.admin-select-menu {
  position: fixed;
  z-index: 110;
  max-height: 16rem;
  overflow-y: auto;
  margin: 0;
  padding: 0.375rem;
  border: 1px solid var(--outline-variant);
  border-radius: 10px;
  background: var(--surface-container-lowest);
  box-shadow: 0 18px 40px -18px rgb(0 0 0 / 0.55);
  scrollbar-color: var(--outline-variant) var(--surface-container-lowest);
}
.admin-select-menu li {
  margin: 0;
  padding: 0.625rem 0.75rem;
  border-radius: 7px;
  color: var(--on-surface-variant);
  font-family: 'Inter', sans-serif;
  font-size: 0.8125rem;
  white-space: nowrap;
  cursor: pointer;
  outline: none;
}
.admin-select-menu li:hover,
.admin-select-menu li:focus-visible {
  background: color-mix(in srgb, var(--primary) 7%, var(--surface-container-lowest));
  color: var(--on-surface);
}
.admin-select-menu li[aria-selected="true"] {
  background: color-mix(in srgb, var(--primary) 12%, var(--surface-container));
  color: var(--primary);
  font-weight: 600;
}
.admin-select-menu li[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ===================== Improved font rendering ===================== */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}