/* === Material Design 3 — Phira Server Manager === */
:root {
  /* Primary */
  --md-primary: #6750A4;
  --md-on-primary: #FFFFFF;
  --md-primary-container: #EADDFF;
  --md-on-primary-container: #21005D;

  /* Secondary */
  --md-secondary: #625B71;
  --md-on-secondary: #FFFFFF;
  --md-secondary-container: #E8DEF8;
  --md-on-secondary-container: #1D192B;

  /* Tertiary */
  --md-tertiary: #7D5260;
  --md-on-tertiary: #FFFFFF;
  --md-tertiary-container: #FFD8E4;
  --md-on-tertiary-container: #31111D;

  /* Error */
  --md-error: #B3261E;
  --md-on-error: #FFFFFF;
  --md-error-container: #F9DEDC;
  --md-on-error-container: #410E0B;

  /* Surface */
  --md-surface: #FFFBFE;
  --md-on-surface: #1C1B1F;
  --md-surface-variant: #E7E0EC;
  --md-on-surface-variant: #49454F;
  --md-surface-container-lowest: #FFFFFF;
  --md-surface-container-low: #F7F2FA;
  --md-surface-container: #F3EDF7;
  --md-surface-container-high: #ECE6F0;
  --md-surface-container-highest: #E6E0E9;

  /* Outline */
  --md-outline: #79747E;
  --md-outline-variant: #CAC4D0;

  /* Shadows */
  --md-elevation-1: 0 1px 2px 0 rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
  --md-elevation-2: 0 1px 2px 0 rgba(0,0,0,0.3), 0 2px 6px 2px rgba(0,0,0,0.15);
  --md-elevation-3: 0 4px 8px 3px rgba(0,0,0,0.15), 0 1px 3px 0 rgba(0,0,0,0.3);
  --md-elevation-4: 0 6px 10px 4px rgba(0,0,0,0.15), 0 2px 3px 0 rgba(0,0,0,0.3);
  --md-elevation-5: 0 8px 12px 6px rgba(0,0,0,0.15), 0 4px 4px 0 rgba(0,0,0,0.3);

  /* Shape */
  --md-shape-extra-small: 4px;
  --md-shape-small: 8px;
  --md-shape-medium: 12px;
  --md-shape-large: 16px;
  --md-shape-extra-large: 28px;
  --md-shape-full: 9999px;

  /* Typography */
  --md-typescale-display-large: 57px/64px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-headline-large: 32px/40px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-headline-medium: 28px/36px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-headline-small: 24px/32px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-title-large: 22px/28px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-title-medium: 16px/24px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-title-small: 14px/20px 'Google Sans', 'Noto Sans SC', sans-serif;
  --md-typescale-body-large: 16px/24px 'Roboto', 'Noto Sans SC', sans-serif;
  --md-typescale-body-medium: 14px/20px 'Roboto', 'Noto Sans SC', sans-serif;
  --md-typescale-body-small: 12px/16px 'Roboto', 'Noto Sans SC', sans-serif;
  --md-typescale-label-large: 14px/20px 'Roboto', 'Noto Sans SC', sans-serif;
  --md-typescale-label-medium: 12px/16px 'Roboto', 'Noto Sans SC', sans-serif;
  --md-typescale-label-small: 11px/16px 'Roboto', 'Noto Sans SC', sans-serif;

  /* Transitions */
  --md-transition-standard: 200ms cubic-bezier(0.2, 0, 0, 1);
  --md-transition-emphasized: 400ms cubic-bezier(0.2, 0, 0, 1);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font: var(--md-typescale-body-medium);
  color: var(--md-on-surface);
  background: var(--md-surface);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--md-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Typography === */
.display-large { font: var(--md-typescale-display-large); letter-spacing: -0.25px; }
.headline-large { font: var(--md-typescale-headline-large); }
.headline-medium { font: var(--md-typescale-headline-medium); }
.headline-small { font: var(--md-typescale-headline-small); }
.title-large { font: var(--md-typescale-title-large); }
.title-medium { font: var(--md-typescale-title-medium); font-weight: 500; }
.title-small { font: var(--md-typescale-title-small); font-weight: 500; }
.body-large { font: var(--md-typescale-body-large); }
.body-medium { font: var(--md-typescale-body-medium); }
.body-small { font: var(--md-typescale-body-small); }
.label-large { font: var(--md-typescale-label-large); font-weight: 500; }
.label-medium { font: var(--md-typescale-label-medium); font-weight: 500; }
.label-small { font: var(--md-typescale-label-small); font-weight: 500; }

/* === Layout === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* === Top App Bar === */
.top-app-bar {
  position: sticky; top: 0; z-index: 100;
  background: var(--md-surface);
  padding: 0 16px;
  height: 64px;
  display: flex; align-items: center; gap: 16px;
  border-bottom: 1px solid var(--md-outline-variant);
}
.top-app-bar__title { flex: 1; font: var(--md-typescale-title-large); color: var(--md-on-surface); }
.top-app-bar__nav { display: flex; gap: 8px; }

/* === Navigation Tab === */
.nav-tabs {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--md-outline-variant);
  background: var(--md-surface);
}
.nav-tab {
  padding: 12px 24px; border: none; background: none; cursor: pointer;
  font: var(--md-typescale-title-small); color: var(--md-on-surface-variant);
  border-bottom: 2px solid transparent;
  transition: all var(--md-transition-standard);
  position: relative;
}
.nav-tab:hover { background: rgba(103,80,164,0.08); }
.nav-tab.active { color: var(--md-primary); border-bottom-color: var(--md-primary); }

/* === Cards === */
.card {
  background: var(--md-surface-container-low);
  border-radius: var(--md-shape-medium);
  padding: 16px;
  box-shadow: var(--md-elevation-1);
  transition: box-shadow var(--md-transition-standard);
}
.card:hover { box-shadow: var(--md-elevation-2); }
.card--filled { background: var(--md-surface-container-highest); }
.card--outlined { background: transparent; border: 1px solid var(--md-outline-variant); box-shadow: none; }
.card--elevated { background: var(--md-surface-container-low); box-shadow: var(--md-elevation-2); }
.card__header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.card__title { font: var(--md-typescale-title-medium); color: var(--md-on-surface); }
.card__subtitle { font: var(--md-typescale-body-medium); color: var(--md-on-surface-variant); }
.card__body { font: var(--md-typescale-body-medium); color: var(--md-on-surface-variant); }

/* === Stat Cards === */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.stat-card {
  background: var(--md-surface-container-low);
  border-radius: var(--md-shape-medium);
  padding: 20px;
  box-shadow: var(--md-elevation-1);
  display: flex; flex-direction: column; gap: 4px;
}
.stat-card__value { font: var(--md-typescale-headline-medium); color: var(--md-primary); }
.stat-card__label { font: var(--md-typescale-label-large); color: var(--md-on-surface-variant); }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border: none; border-radius: var(--md-shape-full);
  font: var(--md-typescale-label-large); cursor: pointer;
  transition: all var(--md-transition-standard);
  position: relative; overflow: hidden;
  text-decoration: none;
}
.btn:hover { box-shadow: var(--md-elevation-1); }
.btn:active { box-shadow: none; }

.btn--filled {
  background: var(--md-primary); color: var(--md-on-primary);
}
.btn--filled:hover { background: #5A3E9A; box-shadow: var(--md-elevation-2); }

.btn--filled-tonal {
  background: var(--md-secondary-container); color: var(--md-on-secondary-container);
}
.btn--filled-tonal:hover { background: #D8CAF0; }

.btn--outlined {
  background: transparent; color: var(--md-primary);
  border: 1px solid var(--md-outline);
}
.btn--outlined:hover { background: rgba(103,80,164,0.08); }

.btn--text {
  background: transparent; color: var(--md-primary); padding: 10px 12px;
}
.btn--text:hover { background: rgba(103,80,164,0.08); }

.btn--error {
  background: var(--md-error); color: var(--md-on-error);
}

.btn--icon {
  width: 40px; height: 40px; padding: 8px; border-radius: var(--md-shape-full);
  background: transparent; color: var(--md-on-surface-variant);
}
.btn--icon:hover { background: rgba(103,80,164,0.08); }

.btn--small { padding: 6px 16px; font: var(--md-typescale-label-medium); }
.btn--large { padding: 14px 32px; font: var(--md-typescale-body-large); font-weight: 500; }

.btn:disabled { opacity: 0.38; cursor: not-allowed; box-shadow: none; }

/* === Icon Button === */
.icon-btn {
  width: 40px; height: 40px; border-radius: var(--md-shape-full);
  border: none; background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--md-on-surface-variant);
  transition: background var(--md-transition-standard);
}
.icon-btn:hover { background: rgba(103,80,164,0.08); }
.icon-btn svg { width: 24px; height: 24px; }

/* === Text Fields === */
.text-field {
  display: flex; flex-direction: column; gap: 4px;
  margin-bottom: 16px;
}
.text-field__label {
  font: var(--md-typescale-label-large); color: var(--md-on-surface-variant);
}
.text-field__input {
  padding: 12px 16px; border: 1px solid var(--md-outline);
  border-radius: var(--md-shape-small); background: transparent;
  font: var(--md-typescale-body-large); color: var(--md-on-surface);
  transition: border-color var(--md-transition-standard);
  outline: none; width: 100%;
}
.text-field__input:focus {
  border-color: var(--md-primary); border-width: 2px; padding: 11px 15px;
}
.text-field__input::placeholder { color: var(--md-outline); }
.text-field__supporting {
  font: var(--md-typescale-body-small); color: var(--md-on-surface-variant);
}

/* === Textarea === */
textarea.text-field__input {
  resize: vertical; min-height: 80px;
}

/* === Chips === */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--md-shape-small);
  font: var(--md-typescale-label-large);
  border: 1px solid var(--md-outline-variant);
  background: transparent;
}
.chip--primary {
  background: var(--md-primary-container); color: var(--md-on-primary-container);
  border-color: transparent;
}
.chip--success {
  background: #C8E6C9; color: #1B5E20; border-color: transparent;
}
.chip--warning {
  background: #FFF3E0; color: #E65100; border-color: transparent;
}
.chip--error {
  background: var(--md-error-container); color: var(--md-on-error-container);
  border-color: transparent;
}

/* === Badge === */
.badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 20px; padding: 0 6px;
  border-radius: var(--md-shape-full);
  font: var(--md-typescale-label-small);
  background: var(--md-error); color: var(--md-on-error);
}

/* === Table === */
.table-wrapper {
  overflow-x: auto; border-radius: var(--md-shape-medium);
  border: 1px solid var(--md-outline-variant);
}
table {
  width: 100%; border-collapse: collapse;
  font: var(--md-typescale-body-medium);
}
th {
  text-align: left; padding: 12px 16px;
  font: var(--md-typescale-label-large); color: var(--md-on-surface-variant);
  background: var(--md-surface-container-high);
  border-bottom: 1px solid var(--md-outline-variant);
}
td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(103,80,164,0.04); }

/* === Divider === */
.divider { border: none; border-top: 1px solid var(--md-outline-variant); margin: 16px 0; }

/* === Dialog / Modal === */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 200;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: all var(--md-transition-emphasized);
}
.overlay.active { opacity: 1; visibility: visible; }

.dialog {
  background: var(--md-surface-container-high);
  border-radius: var(--md-shape-large);
  padding: 24px; min-width: 320px; max-width: 560px; width: 90%;
  box-shadow: var(--md-elevation-3);
}
.dialog__title { font: var(--md-typescale-headline-small); margin-bottom: 16px; }
.dialog__content { font: var(--md-typescale-body-medium); color: var(--md-on-surface-variant); margin-bottom: 24px; }
.dialog__actions { display: flex; gap: 8px; justify-content: flex-end; }

/* === Snackbar === */
.snackbar {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--md-on-surface); color: var(--md-surface);
  padding: 14px 24px; border-radius: var(--md-shape-small);
  font: var(--md-typescale-body-medium);
  box-shadow: var(--md-elevation-3);
  display: flex; align-items: center; gap: 16px;
  z-index: 300; opacity: 0; visibility: hidden;
  transition: all var(--md-transition-standard);
  max-width: 90vw;
}
.snackbar.active { opacity: 1; visibility: visible; }
.snackbar__action {
  background: none; border: none; color: var(--md-primary-container);
  font: var(--md-typescale-label-large); cursor: pointer;
}
.snackbar--error { background: var(--md-error); color: var(--md-on-error); }
.snackbar--error .snackbar__action { color: #FFDAD6; }

/* === Progress === */
.progress-bar {
  width: 100%; height: 4px; background: var(--md-surface-variant);
  border-radius: 2px; overflow: hidden;
}
.progress-bar__fill {
  height: 100%; background: var(--md-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
  animation: progress-indeterminate 1.5s ease-in-out infinite;
}
@keyframes progress-indeterminate {
  0% { width: 0%; margin-left: 0; }
  50% { width: 50%; margin-left: 25%; }
  100% { width: 0%; margin-left: 100%; }
}

/* === Spinner === */
.spinner {
  width: 40px; height: 40px; border: 4px solid var(--md-surface-variant);
  border-top-color: var(--md-primary); border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 24px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Switch / Toggle === */
.toggle {
  display: inline-flex; align-items: center; gap: 12px; cursor: pointer;
}
.toggle__track {
  width: 52px; height: 32px; border-radius: var(--md-shape-full);
  background: var(--md-surface-variant);
  border: 2px solid var(--md-outline);
  position: relative; transition: all var(--md-transition-standard);
}
.toggle__thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--md-outline);
  position: absolute; top: 50%; left: 4px;
  transform: translateY(-50%);
  transition: all var(--md-transition-standard);
  box-shadow: var(--md-elevation-1);
}
input:checked + .toggle__track {
  background: var(--md-primary); border-color: var(--md-primary);
}
input:checked + .toggle__track .toggle__thumb {
  background: var(--md-on-primary); left: calc(100% - 20px);
}
.toggle__label { font: var(--md-typescale-body-medium); color: var(--md-on-surface); }

/* === Search Bar === */
.search-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 16px; background: var(--md-surface-container-high);
  border-radius: var(--md-shape-full);
  border: 1px solid transparent;
  transition: all var(--md-transition-standard);
}
.search-bar:focus-within {
  border-color: var(--md-primary); background: var(--md-surface);
}
.search-bar__icon { color: var(--md-on-surface-variant); flex-shrink: 0; }
.search-bar__input {
  flex: 1; border: none; background: transparent; outline: none;
  font: var(--md-typescale-body-large); color: var(--md-on-surface);
  padding: 8px 0;
}
.search-bar__input::placeholder { color: var(--md-outline); }

/* === Home Page Specific === */
.room-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 16px; margin-top: 24px;
}

.room-card {
  background: var(--md-surface-container-low);
  border-radius: var(--md-shape-large);
  overflow: hidden;
  box-shadow: var(--md-elevation-1);
  transition: all var(--md-transition-standard);
  border-left: 4px solid var(--md-primary);
}
.room-card:hover { box-shadow: var(--md-elevation-3); }

.room-card__header {
  padding: 16px 20px;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--md-outline-variant);
}
.room-card__roomid { font: var(--md-typescale-title-medium); color: var(--md-primary); font-family: monospace; }
.room-card__state { display: flex; gap: 6px; flex-wrap: wrap; }

.room-card__body { padding: 16px 20px; display: flex; flex-direction: column; gap: 12px; }

.room-card__chart {
  display: flex; align-items: center; gap: 8px;
  font: var(--md-typescale-body-medium); color: var(--md-on-surface-variant);
}
.room-card__chart-icon { color: var(--md-tertiary); }

.room-card__host {
  display: flex; align-items: center; gap: 8px;
  font: var(--md-typescale-body-medium);
}

.room-card__players {
  display: flex; flex-wrap: wrap; gap: 6px;
}
.player-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: var(--md-shape-full);
  font: var(--md-typescale-label-medium);
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}
.player-badge--host {
  background: var(--md-primary-container); color: var(--md-on-primary-container);
}

.room-card__footer {
  padding: 12px 20px;
  border-top: 1px solid var(--md-outline-variant);
  display: flex; gap: 6px; flex-wrap: wrap;
}

/* === Admin Page === */
.admin-layout { display: flex; min-height: calc(100vh - 64px); }

.sidebar {
  width: 256px; flex-shrink: 0;
  background: var(--md-surface-container-low);
  border-right: 1px solid var(--md-outline-variant);
  padding: 12px 0; overflow-y: auto;
}
.sidebar__item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 24px; cursor: pointer; border: none; background: none;
  width: 100%; text-align: left;
  font: var(--md-typescale-label-large); color: var(--md-on-surface-variant);
  transition: background var(--md-transition-standard);
  border-radius: 0 var(--md-shape-full) var(--md-shape-full) 0;
  margin-right: 12px;
}
.sidebar__item:hover { background: rgba(103,80,164,0.08); }
.sidebar__item.active {
  background: var(--md-secondary-container); color: var(--md-on-secondary-container);
}
.sidebar__item svg { color: var(--md-on-surface-variant); flex-shrink: 0; }
.sidebar__item.active svg { color: var(--md-on-secondary-container); }
.sidebar__item--danger { color: var(--md-error); }
.sidebar__item--danger:hover { background: rgba(179,38,30,0.08); }
.sidebar__item--danger.active { background: var(--md-error); color: var(--md-on-error); }
.sidebar__item--danger svg { color: var(--md-error); }
.sidebar__item--danger.active svg { color: var(--md-on-error); }
.sidebar__divider { border: none; border-top: 1px solid var(--md-outline-variant); margin: 8px 16px; }
.sidebar__label { font: var(--md-typescale-label-small); color: var(--md-on-surface-variant); padding: 8px 24px 4px; }

.main-content { flex: 1; padding: 24px; overflow-y: auto; }

.panel { display: none; }
.panel.active { display: block; }

.panel__header {
  margin-bottom: 24px;
}
.panel__title { font: var(--md-typescale-headline-small); margin-bottom: 4px; }
.panel__desc { font: var(--md-typescale-body-medium); color: var(--md-on-surface-variant); }

/* Form group */
.form-group { margin-bottom: 20px; }
.form-group__label { display: block; font: var(--md-typescale-label-large); margin-bottom: 6px; color: var(--md-on-surface-variant); }
.form-row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.form-row > * { flex: 1; min-width: 150px; }

/* Auth Banner */
.auth-banner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; margin-bottom: 24px;
  background: var(--md-error-container); color: var(--md-on-error-container);
  border-radius: var(--md-shape-large);
  flex-wrap: wrap; gap: 12px;
}
.auth-banner--success {
  background: #C8E6C9; color: #1B5E20;
}
.auth-banner__text { font: var(--md-typescale-body-medium); }

/* Row cards for lists */
.list-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-radius: var(--md-shape-small);
  gap: 12px; flex-wrap: wrap;
}
.list-row:hover { background: rgba(103,80,164,0.04); }
.list-row + .list-row { margin-top: 4px; }

/* Key-value pairs */
.kv-pair { display: flex; gap: 8px; align-items: center; }
.kv-key { font: var(--md-typescale-label-medium); color: var(--md-on-surface-variant); }
.kv-value { font: var(--md-typescale-body-medium); font-family: monospace; color: var(--md-on-surface); }

/* Log list */
.log-list {
  max-height: 400px; overflow-y: auto;
  background: var(--md-surface-container-lowest);
  border-radius: var(--md-shape-medium);
  border: 1px solid var(--md-outline-variant);
  padding: 8px;
}
.log-entry {
  padding: 6px 8px; border-radius: var(--md-shape-extra-small);
  font: var(--md-typescale-body-small); color: var(--md-on-surface-variant);
  display: flex; gap: 8px;
}
.log-entry + .log-entry { margin-top: 2px; }
.log-entry:hover { background: rgba(103,80,164,0.04); }
.log-entry__time { color: var(--md-outline); white-space: nowrap; font-family: monospace; }

/* Empty state */
.empty-state {
  text-align: center; padding: 48px 24px;
  color: var(--md-on-surface-variant);
}
.empty-state__icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state__title { font: var(--md-typescale-title-medium); margin-bottom: 8px; }
.empty-state__desc { font: var(--md-typescale-body-medium); }

/* === Responsive === */
@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .sidebar {
    width: 100%; border-right: none; border-bottom: 1px solid var(--md-outline-variant);
    display: flex; overflow-x: auto; padding: 8px; gap: 4px;
  }
  .sidebar__item {
    padding: 8px 16px; margin-right: 0; border-radius: var(--md-shape-full);
    white-space: nowrap; flex-shrink: 0;
  }
  .sidebar__divider, .sidebar__label { display: none; }
  .main-content { padding: 16px; }
  .room-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .top-app-bar { padding: 0 12px; }
  .form-row { flex-direction: column; }
  .form-row > * { min-width: 100%; }
}

/* === Utility === */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.p-16 { padding: 16px; }
.p-24 { padding: 24px; }
.text-center { text-align: center; }
.text-error { color: var(--md-error); }
.text-primary { color: var(--md-primary); }
.text-muted { color: var(--md-on-surface-variant); }
.font-mono { font-family: 'Roboto Mono', 'Cascadia Code', monospace; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.relative { position: relative; }

/* === Dark Theme === */
[data-theme="dark"] {
  --md-primary: #D0BCFF;
  --md-on-primary: #381E72;
  --md-primary-container: #4F378B;
  --md-on-primary-container: #EADDFF;

  --md-secondary: #CCC2DC;
  --md-on-secondary: #332D41;
  --md-secondary-container: #4A4458;
  --md-on-secondary-container: #E8DEF8;

  --md-tertiary: #EFB8C8;
  --md-on-tertiary: #492532;
  --md-tertiary-container: #633B48;
  --md-on-tertiary-container: #FFD8E4;

  --md-error: #F2B8B5;
  --md-on-error: #601410;
  --md-error-container: #8C1D18;
  --md-on-error-container: #F9DEDC;

  --md-surface: #1C1B1F;
  --md-on-surface: #E6E1E5;
  --md-surface-variant: #49454F;
  --md-on-surface-variant: #CAC4D0;
  --md-surface-container-lowest: #0F0D13;
  --md-surface-container-low: #1D1B20;
  --md-surface-container: #211F26;
  --md-surface-container-high: #2B2930;
  --md-surface-container-highest: #36343B;

  --md-outline: #938F99;
  --md-outline-variant: #49454F;

  --md-elevation-1: 0 1px 2px 0 rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
  --md-elevation-2: 0 1px 2px 0 rgba(0,0,0,0.3), 0 2px 6px 2px rgba(0,0,0,0.15);
  --md-elevation-3: 0 4px 8px 3px rgba(0,0,0,0.15), 0 1px 3px 0 rgba(0,0,0,0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --md-primary: #D0BCFF;
    --md-on-primary: #381E72;
    --md-primary-container: #4F378B;
    --md-on-primary-container: #EADDFF;

    --md-secondary: #CCC2DC;
    --md-on-secondary: #332D41;
    --md-secondary-container: #4A4458;
    --md-on-secondary-container: #E8DEF8;

    --md-tertiary: #EFB8C8;
    --md-on-tertiary: #492532;
    --md-tertiary-container: #633B48;
    --md-on-tertiary-container: #FFD8E4;

    --md-error: #F2B8B5;
    --md-on-error: #601410;
    --md-error-container: #8C1D18;
    --md-on-error-container: #F9DEDC;

    --md-surface: #1C1B1F;
    --md-on-surface: #E6E1E5;
    --md-surface-variant: #49454F;
    --md-on-surface-variant: #CAC4D0;
    --md-surface-container-lowest: #0F0D13;
    --md-surface-container-low: #1D1B20;
    --md-surface-container: #211F26;
    --md-surface-container-high: #2B2930;
    --md-surface-container-highest: #36343B;

    --md-outline: #938F99;
    --md-outline-variant: #49454F;

    --md-elevation-1: 0 1px 2px 0 rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
    --md-elevation-2: 0 1px 2px 0 rgba(0,0,0,0.3), 0 2px 6px 2px rgba(0,0,0,0.15);
    --md-elevation-3: 0 4px 8px 3px rgba(0,0,0,0.15), 0 1px 3px 0 rgba(0,0,0,0.3);
  }
}