/*
 * styles.css — UNO Web App
 *
 * Design: Modern flat UI with muted, sophisticated palette.
 * Not childish, not gambling — clean, refined card game aesthetic.
 * Mobile-first responsive layout.
 */

/* ═══════════════════════════════════════════════════════════
   1. DESIGN TOKENS
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Surface & background */
  --bg:           #f3f4f7;
  --surface:      #ffffff;
  --surface-alt:  #e9ebf0;
  --game-felt:    #1b7a4a;

  /* Card colours — refined, easy on the eyes */
  --card-red:     #cf4b4b;
  --card-green:   #2f9e63;
  --card-blue:    #4178d4;
  --card-yellow:  #c9a227;
  --card-wild-1:  #cf4b4b;
  --card-wild-2:  #4178d4;
  --card-wild-3:  #2f9e63;
  --card-wild-4:  #c9a227;
  --card-back:    #2c3050;

  /* UI accents */
  --primary:      #5b7fee;
  --primary-hover:#4a6ad6;
  --danger:       #cf4b4b;
  --success:      #2f9e63;
  --warn:         #c9a227;
  --muted:        #7c8498;

  /* Text */
  --text:         #1c1f2e;
  --text-light:   #6e7589;
  --text-on-dark: #d8dbe6;
  --text-on-card: #ffffff;

  /* Sizing */
  --card-w:       56px;
  --card-h:       84px;
  --card-radius:  10px;
  --radius:       14px;
  --radius-sm:    8px;

  /* Font families — Segoe UI for body, Segoe UI Variable Display for headings */
  --font: 'Segoe UI Variable', 'Segoe UI', system-ui, -apple-system,
          BlinkMacSystemFont, sans-serif;
  --font-display: 'Segoe UI Variable Display', 'Segoe UI', system-ui,
                   -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Cascadia Mono', Consolas, 'Courier New', monospace;

  /* Transitions */
  --ease: cubic-bezier(.4,0,.2,1);
}

/* ═══════════════════════════════════════════════════════════
   2. RESET & BASE
   ═══════════════════════════════════════════════════════════ */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

/* ═══════════════════════════════════════════════════════════
   3. TYPOGRAPHY
   ═══════════════════════════════════════════════════════════ */

h1 { font-family: var(--font-display); font-size: 2.25rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-family: var(--font-display); font-size: 1.65rem; font-weight: 700; letter-spacing: -0.01em; }
h3 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; }

.clr-red    { color: var(--card-red); }
.clr-green  { color: var(--card-green); }
.clr-blue   { color: var(--card-blue); }
.clr-yellow { color: var(--card-yellow); }
.sym        { font-weight: 700; }

/* ═══════════════════════════════════════════════════════════
   4. LAYOUT & VIEWS
   ═══════════════════════════════════════════════════════════ */

.app-container {
  width: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.view {
  display: none;
  flex: 1;
  flex-direction: column;
}

.view-active {
  display: flex;
}

/* ═══════════════════════════════════════════════════════════
   5. LANDING PAGE
   ═══════════════════════════════════════════════════════════ */

.landing-view {
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  text-align: center;
  gap: 1.75rem;
  /* Don't let flex stretch fill half the screen with whitespace */
  flex: 0 1 auto;
  min-height: 100dvh;
}

.landing-logo {
  font-family: var(--font-display);
  font-size: 3.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--card-red), var(--card-blue), var(--card-green), var(--card-yellow));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.landing-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
  max-width: 360px;
  line-height: 1.5;
}

.game-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  width: 100%;
  max-width: 380px;
}

.game-tile {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease);
  border: 2px solid var(--surface-alt);
}

.game-tile:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.game-tile-active {
  border-color: var(--primary);
  box-shadow: 0 2px 12px rgba(91,127,238,0.12);
}

.game-tile-disabled {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
}

.game-tile-icon {
  font-size: 2.5rem;
  margin-bottom: 0.35rem;
}

.game-tile-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 0.15rem;
}

.game-tile-desc {
  color: var(--text-light);
  font-size: 0.9rem;
}

/* (removed: no longer used) */

/* ═══════════════════════════════════════════════════════════
   6. LOBBY PAGE (tab-based)
   ═══════════════════════════════════════════════════════════ */

.lobby-view {
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  gap: 1rem;
  flex: 0 1 auto;
  min-height: 100dvh;
}

.lobby-back-btn {
  margin-top: 0.5rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.lobby-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
}

.lobby-subtitle {
  color: var(--text-light);
  font-size: 1rem;
  margin-top: -0.5rem;
}

.lobby-card {
  background: var(--surface);
  border-radius: var(--radius);
  width: 100%;
  max-width: 380px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.lobby-tabs {
  display: flex;
  border-bottom: 2px solid var(--surface-alt);
}

.lobby-tab {
  flex: 1;
  padding: 0.8rem 0.5rem;
  border: none;
  background: transparent;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text-light);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

.lobby-tab:hover {
  color: var(--text);
}

.lobby-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.lobby-tab-content {
  padding: 1.25rem;
  display: none;
}

.lobby-tab-content.active {
  display: block;
}

.lobby-tab-content form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: -0.35rem;
}

.form-input {
  padding: 0.7rem 0.9rem;
  border: 2px solid var(--surface-alt);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 1rem;
  transition: border-color 0.15s var(--ease);
  outline: none;
  background: var(--bg);
}

.form-input:focus {
  border-color: var(--primary);
  background: var(--surface);
}

.form-input-code {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-family: var(--font-mono);
  font-weight: 600;
}

#lobby-status {
  color: var(--text-light);
  font-size: 0.9rem;
  min-height: 1.25rem;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════
   7. ROOM LOBBY
   ═══════════════════════════════════════════════════════════ */

.room-view {
  align-items: center;
  justify-content: flex-start;
  padding: 2rem 1rem 1.5rem;
  gap: 1rem;
  flex: 0 1 auto;
  min-height: 100dvh;
}

#room-content {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.room-header {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
}

.room-code-display {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.room-code-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
}

.room-code-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  font-family: var(--font-mono);
  color: var(--primary);
}

.room-player-list {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.room-player-list h3 { margin-bottom: 0.65rem; }

.room-player-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--surface-alt);
}

.room-player-row:last-child { border-bottom: none; }
.player-disconnected { opacity: 0.4; }

.player-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.player-info {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.player-name { font-weight: 600; font-size: 1.05rem; }
.host-badge {
  background: var(--primary);
  color: white;
  font-size: 0.7rem;
  padding: 0.08rem 0.35rem;
  border-radius: 4px;
  font-weight: 600;
  margin-left: 0.25rem;
  vertical-align: middle;
}
.player-status { font-size: 0.85rem; color: var(--text-light); }

.room-options, .room-options-readonly {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.room-options h3 { margin-bottom: 0.65rem; }

.option-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--surface-alt);
  font-size: 0.95rem;
}

.option-row:last-child { border-bottom: none; }

.option-row select, .option-row input[type="checkbox"] {
  padding: 0.35rem 0.5rem;
  border: 2px solid var(--surface-alt);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 0.9rem;
}

.room-actions {
  display: flex;
  flex-direction: row;
  gap: 0.75rem;
  justify-content: center;
  width: 100%;
}

.room-actions .btn {
  flex: 1;
}

.btn-leave {
  background: #8b3a3a;
  color: white;
}

.btn-leave:hover {
  background: #733030;
}

/* ═══════════════════════════════════════════════════════════
   8. GAME BOARD — Felt-table with light + dark support
   ═══════════════════════════════════════════════════════════ */

/* ── Game-scoped design tokens (light mode) ─────────── */
.game-view {
  --g-bg:           #e8e3d8;
  --g-felt:         linear-gradient(145deg, #3a8f5c 0%, #2d7a4c 50%, #266b40 100%);
  --g-felt-shadow:  inset 0 2px 30px rgba(0,0,0,0.12);
  --g-toolbar-bg:   #ffffff;
  --g-toolbar-border: #ddd8cd;
  --g-text:         #1c1f2e;
  --g-text-muted:   #7b7566;
  --g-panel-bg:     rgba(255,255,255,0.82);
  --g-panel-border: rgba(0,0,0,0.06);
  --g-hand-bg:      #f4f0e8;
  --g-hand-border:  #ddd8cd;
  --g-status-bg:    rgba(255,255,255,0.7);
  --g-scoreboard-bg: rgba(255,255,255,0.9);
  --g-glow:         rgba(91,127,238,0.35);
}

/* ── Dark mode overrides ────────────────────────────── */
@media (prefers-color-scheme: dark) {
  .game-view {
    --g-bg:           #0b1e14;
    --g-felt:         linear-gradient(145deg, #14553a 0%, #0f4430 50%, #0b3324 100%);
    --g-felt-shadow:  inset 0 2px 40px rgba(0,0,0,0.35);
    --g-toolbar-bg:   rgba(8,18,12,0.8);
    --g-toolbar-border: rgba(255,255,255,0.06);
    --g-text:         #dce4d8;
    --g-text-muted:   #7a9480;
    --g-panel-bg:     rgba(255,255,255,0.06);
    --g-panel-border: rgba(255,255,255,0.08);
    --g-hand-bg:      rgba(8,18,12,0.7);
    --g-hand-border:  rgba(255,255,255,0.06);
    --g-status-bg:    rgba(255,255,255,0.08);
    --g-scoreboard-bg: rgba(10,24,16,0.85);
    --g-glow:         rgba(91,127,238,0.45);
  }
}

/* ── Main game shell ────────────────────────────────── */
.game-view {
  background: var(--g-bg);
  color: var(--g-text);
  flex: 1;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* ── Toolbar ────────────────────────────────────────── */
.game-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  background: var(--g-toolbar-bg);
  border-bottom: 1px solid var(--g-toolbar-border);
  flex-shrink: 0;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 10;
}

.game-toolbar-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--card-red), var(--card-blue));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.btn-ghost-game {
  background: transparent;
  color: var(--g-text-muted);
  padding: 0.3rem 0.6rem;
  box-shadow: none;
  font-size: 0.9rem;
}
.btn-ghost-game:hover {
  background: rgba(128,128,128,0.12);
  color: var(--g-text);
}

.game-toolbar-left,
.game-toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Status bar ─────────────────────────────────────── */
.game-status {
  text-align: center;
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  flex-shrink: 0;
  background: var(--g-status-bg);
  color: var(--g-text-muted);
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
  letter-spacing: 0.01em;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 5;
}

.status-my-turn    { background: rgba(91,127,238,0.12); color: #5b7fee; }
.status-waiting    { background: var(--g-status-bg); color: var(--g-text-muted); }
.status-challenge  { background: rgba(207,75,75,0.12); color: var(--danger); }
.status-choose     { background: rgba(201,162,39,0.12); color: #a88a20; }
.status-drawn      { background: rgba(91,127,238,0.1);  color: #5b7fee; }
.status-round-end  { background: rgba(47,158,99,0.12);  color: var(--success); }
.status-game-end   { background: rgba(201,162,39,0.14); color: #a88a20; }

@media (prefers-color-scheme: dark) {
  .status-my-turn    { background: rgba(91,127,238,0.16); color: #8daaf8; }
  .status-challenge  { background: rgba(207,75,75,0.16); color: #f0a0a0; }
  .status-choose     { background: rgba(201,162,39,0.16); color: #f0d77a; }
  .status-drawn      { background: rgba(91,127,238,0.14); color: #8daaf8; }
  .status-round-end  { background: rgba(47,158,99,0.16); color: #7ee0a8; }
  .status-game-end   { background: rgba(201,162,39,0.18); color: #f0d77a; }
}

/* ── Main game body (scrollable between toolbar and hand) */
.game-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

/* ── Opponents section ──────────────────────────────── */
#opponents-area {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 0.6rem;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ── Centre play area — the "felt" ──────────────────── */
#game-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1rem 0.75rem;
  min-height: 150px;
  margin: 0 0.5rem;
  border-radius: var(--radius);
  background: var(--g-felt);
  box-shadow: var(--g-felt-shadow);
  position: relative;
}

/* Subtle felt texture pattern */
#game-center::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: radial-gradient(ellipse at 40% 50%, rgba(255,255,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Action buttons bar ─────────────────────────────── */
#game-actions {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  flex-shrink: 0;
  flex-wrap: wrap;
  min-height: 38px;
}

/* ── My hand (bottom shelf) ─────────────────────────── */
#my-hand-area {
  flex-shrink: 0;
  padding: 0.35rem 0.5rem 0.75rem;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  background: var(--g-hand-bg);
  border-top: 1px solid var(--g-hand-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#my-hand {
  display: flex;
  width: fit-content;
  margin: 0 auto;
  padding: 40px 0.5rem 0.25rem;
  min-height: calc(var(--card-h) + 40px);
}

#my-hand .card {
  margin-left: -8px;
  transition: transform 0.2s var(--ease), margin 0.2s var(--ease),
              box-shadow 0.2s var(--ease), opacity 0.2s var(--ease);
}

#my-hand .card:first-child { margin-left: 0; }

/* Playable cards are always slightly raised */
#my-hand .card-playable {
  transform: translateY(-8px);
  z-index: 50 !important;
}

/* Hover raises playable cards more */
#my-hand .card-playable:hover {
  transform: translateY(-18px);
  z-index: 100 !important;
}

/* Selected card is raised highest with a glow */
#my-hand .card-selected {
  transform: translateY(-34px) scale(1.06);
  z-index: 200 !important;
  box-shadow:
    inset 0 0 0 3px rgba(255,255,255,0.18),
    0 0 0 3px var(--g-glow),
    0 10px 24px rgba(0,0,0,0.2);
}

#my-hand .card-selected:hover {
  transform: translateY(-34px) scale(1.06);
}

/* ── Toolbar target score ───────────────────────────── */
.toolbar-target {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--g-text-muted);
  letter-spacing: 0.02em;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--g-panel-border);
  border-radius: var(--radius-sm);
  background: var(--g-panel-bg);
}

/* ── My score label (above hand) ────────────────────── */
.my-hand-header {
  display: flex;
  justify-content: center;
  padding: 0.2rem 0.75rem 0;
}

.my-score-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--g-text-muted);
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════════
   9. CARDS — Classic UNO style with modern refinement
   ═══════════════════════════════════════════════════════════ */

.card {
  width: var(--card-w);
  height: var(--card-h);
  border-radius: var(--card-radius);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--text-on-card);
  user-select: none;
  flex-shrink: 0;
  cursor: default;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease), box-shadow 0.2s var(--ease);
  touch-action: none;
  overflow: hidden;
  /* Default border — overridden by colour classes */
  border: 2.5px solid rgba(0,0,0,0.15);
}

/* Classic UNO card inner oval */
.card-red,
.card-green,
.card-blue,
.card-yellow,
.card-wild {
  /* Subtle inner shadow for depth */
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.18);
}

.card-red    { background: var(--card-red);    border-color: #a83535; }
.card-green  { background: var(--card-green);  border-color: #1f7a48; }
.card-blue   { background: var(--card-blue);   border-color: #2f5db0; }
.card-yellow { background: var(--card-yellow); border-color: #a07e15; color: #1a1a1a; }

.card-wild {
  background: conic-gradient(
    var(--card-wild-1) 0deg 90deg,
    var(--card-wild-2) 90deg 180deg,
    var(--card-wild-3) 180deg 270deg,
    var(--card-wild-4) 270deg 360deg
  );
  border-color: #333;
}

/* Inner oval — pseudo element to give classic look */
.card-red::before,
.card-green::before,
.card-blue::before,
.card-yellow::before,
.card-wild::before {
  content: '';
  position: absolute;
  top: 14%;
  left: 10%;
  width: 80%;
  height: 72%;
  background: rgba(255,255,255,0.18);
  border-radius: 50%;
  transform: rotate(-20deg);
  pointer-events: none;
}

.card-back {
  background: var(--card-back);
  border: 2.5px solid #1a1f3a;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.06);
}

.card-back::before {
  content: '';
  position: absolute;
  top: 14%;
  left: 10%;
  width: 80%;
  height: 72%;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
  transform: rotate(-20deg);
  pointer-events: none;
}

.card-back-text {
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  opacity: 0.45;
  position: relative;
  z-index: 1;
}

/* Face-down overlay for deal animation (covers card face) */
.card-deal-back {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border-radius: inherit;
  background: var(--card-back);
  border: 2.5px solid #1a1f3a;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.06);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-deal-back::before {
  content: '';
  position: absolute;
  top: 14%; left: 10%;
  width: 80%; height: 72%;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
  transform: rotate(-20deg);
  pointer-events: none;
}
.card-deal-back::after {
  content: 'UNO';
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  opacity: 0.45;
  color: var(--text-on-card, white);
  position: relative;
  z-index: 1;
}

.card-corner {
  position: absolute;
  font-size: 0.7rem;
  line-height: 1;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,0.25);
}

.card-tl { top: 5px; left: 6px; }
.card-br { bottom: 5px; right: 6px; transform: rotate(180deg); }

.card-center {
  font-size: 1.7rem;
  z-index: 1;
  text-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 1px rgba(0,0,0,0.15);
}

/* Card states */
.card-playable {
  cursor: pointer;
  box-shadow:
    inset 0 0 0 3px rgba(255,255,255,0.18),
    0 0 0 2px rgba(255,255,255,0.35);
}

.card-playable:hover {
  box-shadow:
    inset 0 0 0 3px rgba(255,255,255,0.18),
    0 0 0 2px rgba(255,255,255,0.55),
    0 4px 14px rgba(0,0,0,0.2);
}

.card-disabled {
  cursor: not-allowed;
  pointer-events: none;
}

/* Dark overlay — card stays opaque clipping the card beneath, slightly dimmed */
.card-disabled::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(0, 0, 0, 0.35);
  z-index: 3;
  pointer-events: none;
}

.card-selected {
  cursor: pointer;
}

.card-dragging {
  opacity: 0.85;
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 12px 28px rgba(0,0,0,0.4);
  z-index: 9999;
  pointer-events: none;
}

.card-flying {
  pointer-events: none;
  z-index: 9999;
}

/* Small cards (opponent / mini) */
.card-sm {
  width: 32px;
  height: 48px;
  border-radius: 6px;
}

.card-sm::before { display: none; }
.card-sm .card-corner { display: none; }
.card-sm .card-center { font-size: 0.85rem; }
.card-sm .card-back-text { font-size: 0.55rem; }

.card-mini {
  width: 18px;
  height: 28px;
  border-radius: 4px;
  margin-left: -6px;
}

.card-mini::before { display: none; }
.card-mini:first-child { margin-left: 0; }
.card-mini .card-center { display: none; }
.card-mini .card-back-text { display: none; }

/* ═══════════════════════════════════════════════════════════
   10. OPPONENTS
   ═══════════════════════════════════════════════════════════ */

.opponent-panel {
  background: var(--g-panel-bg);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  text-align: center;
  min-width: 90px;
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
  border: 1px solid var(--g-panel-border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.opponent-active {
  background: rgba(91,127,238,0.1);
  box-shadow: 0 0 0 2px rgba(91,127,238,0.3);
  border-color: rgba(91,127,238,0.2);
}

.opponent-disconnected { opacity: 0.38; }

.opponent-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  color: var(--g-text);
}

.turn-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse-dot 1.2s infinite;
  flex-shrink: 0;
}

.opponent-cards-row {
  display: flex;
  justify-content: center;
  margin: 0.25rem 0;
}

.opponent-extra {
  font-size: 0.8rem;
  color: var(--muted);
  margin-left: 0.25rem;
  align-self: center;
}

.opponent-badges {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  margin-top: 0.25rem;
}

.badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-uno {
  background: var(--danger);
  color: white;
}

.badge-catchable {
  animation: catch-glow 2s infinite;
}

.badge-score {
  background: rgba(128,128,128,0.15);
  color: var(--g-text-muted);
}

/* ═══════════════════════════════════════════════════════════
   11. CENTRE AREA
   ═══════════════════════════════════════════════════════════ */

.draw-pile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  cursor: default;
}

.draw-pile-active {
  cursor: pointer;
}

.draw-pile-active .draw-pile-card {
  border-color: rgba(251,191,36,0.5);
  box-shadow: 0 0 14px rgba(251,191,36,0.35);
  animation: pulse-glow-gold 1.5s infinite;
}

@keyframes pulse-glow-gold {
  0%, 100% { box-shadow: 0 0 8px rgba(251,191,36,0.25); }
  50%      { box-shadow: 0 0 20px rgba(251,191,36,0.5); }
}

.draw-pile-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.1rem;
}

.draw-pile-label-action {
  color: #fbbf24;
  opacity: 1;
  font-weight: 700;
  animation: pulse-uno 1.2s infinite;
}

.deck-count {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
}

.discard-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.discard-top {
  box-shadow: 0 4px 18px rgba(0,0,0,0.3);
  transform: rotate(var(--discard-rotation, 0deg));
}

.color-indicator {
  display: none;
}

.color-red    { background: var(--card-red); }
.color-green  { background: var(--card-green); }
.color-blue   { background: var(--card-blue); }
.color-yellow { background: var(--card-yellow); }

.direction-indicator {
  display: none;
}

/* ═══════════════════════════════════════════════════════════
   12. BUTTONS
   ═══════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s var(--ease), transform 0.1s var(--ease), opacity 0.15s var(--ease), box-shadow 0.15s var(--ease);
  outline: none;
  white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary {
  background: var(--surface-alt);
  color: var(--text);
}
.btn-secondary:hover { background: #d1d5db; }

.btn-ghost {
  background: transparent;
  color: var(--text-light);
  padding: 0.4rem 0.6rem;
}
.btn-ghost:hover { background: var(--surface-alt); color: var(--text); }

.btn-warn {
  background: var(--warn);
  color: #1a1a1a;
}
.btn-warn:hover { background: #b89020; }

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-uno {
  background: var(--danger);
  color: white;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  padding: 0.6rem 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  animation: pulse-uno 1.5s infinite;
}

.btn-catch {
  background: var(--warn);
  color: #1a1a1a;
  font-weight: 700;
  box-shadow: 0 0 0 0 rgba(201,162,39,0.4);
  animation: catch-glow 2s infinite;
}

@keyframes catch-glow {
  0%, 100% { box-shadow: 0 0 4px 0 rgba(201,162,39,0.3); }
  50%      { box-shadow: 0 0 14px 3px rgba(201,162,39,0.45); }
}

.btn-sm { padding: 0.38rem 0.75rem; font-size: 0.85rem; }
.btn-lg { padding: 0.8rem 2rem; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-disabled, .btn:disabled {
  opacity: 0.45;
  cursor: default;
  pointer-events: none;
  animation: none;
}

/* ═══════════════════════════════════════════════════════════
   13. MODALS & OVERLAYS
   ═══════════════════════════════════════════════════════════ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.2s var(--ease);
  backdrop-filter: blur(4px);
  padding: 1rem;
}

.modal-visible { opacity: 1; }

.overlay-modal {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  max-width: 380px;
  width: 100%;
  text-align: center;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,0.18), 0 0 0 1px rgba(0,0,0,0.04);
  overflow: hidden;
}

.overlay-header {
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--surface-alt);
}

.overlay-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.overlay-subtitle {
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 1.5;
}

.overlay-scores {
  padding: 0;
}

.overlay-scores-header {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 1.25rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  border-bottom: 1px solid var(--surface-alt);
}

.overlay-score-row {
  display: flex;
  align-items: center;
  padding: 0.6rem 1.25rem;
  font-size: 0.95rem;
  gap: 0.6rem;
  border-bottom: 1px solid var(--surface-alt);
}

.overlay-score-row:last-child { border-bottom: none; }

.overlay-winner {
  background: rgba(91,127,238,0.06);
  font-weight: 700;
}

.overlay-score-val { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--primary); margin-left: auto; }
.overlay-rank { width: 1.4rem; text-align: center; flex-shrink: 0; color: var(--text-light); font-weight: 600; font-size: 0.88rem; }
.overlay-name { flex: 1; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overlay-btn { margin: 1rem 1.25rem 1.25rem; width: calc(100% - 2.5rem); }
.overlay-wait { color: var(--text-light); font-style: italic; padding: 0.75rem 1.25rem 1.25rem; font-size: 0.9rem; }

/* ═══════════════════════════════════════════════════════════
   14. COLOUR PICKER
   ═══════════════════════════════════════════════════════════ */

.color-picker-modal {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 300px;
  width: 100%;
  text-align: center;
}

.color-picker-title {
  font-family: var(--font-display);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.color-picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.color-btn {
  padding: 1.1rem;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  color: white;
  cursor: pointer;
  transition: transform 0.1s var(--ease), opacity 0.15s;
}

.color-btn:active { transform: scale(0.95); }

.color-btn-red    { background: var(--card-red); }
.color-btn-green  { background: var(--card-green); }
.color-btn-blue   { background: var(--card-blue); }
.color-btn-yellow { background: var(--card-yellow); color: #1a1a1a; }

/* ═══════════════════════════════════════════════════════════
   15. TOASTS
   ═══════════════════════════════════════════════════════════ */

#toast-container {
  position: fixed;
  top: 0.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
  max-width: 90vw;
}

.toast {
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  pointer-events: auto;
}

.toast-visible { opacity: 1; transform: translateY(0); }

.toast-info    { background: var(--primary); color: white; }
.toast-success { background: var(--success); color: white; }
.toast-warn    { background: var(--warn); color: #1a1a1a; }
.toast-error   { background: var(--danger); color: white; }

/* ═══════════════════════════════════════════════════════════
   16. RULES MODAL
   ═══════════════════════════════════════════════════════════ */

.rules-modal {
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius);
  padding: 1.75rem;
  max-width: 580px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  text-align: left;
  position: relative;
}

.rules-close-btn {
  position: sticky;
  top: 0;
  float: right;
  z-index: 10;
}

.rules-modal h2 {
  margin-bottom: 1.25rem;
  text-align: center;
}

.rule-section {
  margin-bottom: 1.1rem;
}

.rule-section h3 {
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.rule-section p,
.rule-section li {
  line-height: 1.6;
  margin-bottom: 0.3rem;
  font-size: 1rem;
}

.rule-section ul,
.rule-section ol {
  padding-left: 1.25rem;
}

.rule-section dl { margin: 0; }
.rule-section dt {
  font-weight: 700;
  margin-top: 0.5rem;
  font-size: 1rem;
}
.rule-section dd {
  margin-left: 1rem;
  margin-bottom: 0.25rem;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ═══════════════════════════════════════════════════════════
   17. ANIMATIONS & KEYFRAMES
   ═══════════════════════════════════════════════════════════ */

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.7); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(91,127,238,0.25); }
  50%      { box-shadow: 0 0 18px rgba(91,127,238,0.5); }
}

@keyframes pulse-uno {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}

@keyframes flash-badge {
  from { opacity: 1; }
  to   { opacity: 0.5; }
}

@keyframes card-pop-in {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* ═══════════════════════════════════════════════════════════
   18. RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

@media (min-width: 640px) {
  :root {
    --card-w: 66px;
    --card-h: 100px;
  }

  .game-grid {
    grid-template-columns: 1fr 1fr;
    max-width: 480px;
  }

  #my-hand .card { margin-left: -6px; }

  .card-sm {
    width: 36px;
    height: 54px;
  }
}

@media (min-width: 1024px) {
  :root {
    --card-w: 74px;
    --card-h: 112px;
  }

  .landing-logo { font-size: 4.5rem; }

  #opponents-area { gap: 1rem; }
  #game-center { gap: 2.5rem; margin: 0 0.75rem; }
  #my-hand .card { margin-left: -4px; }

  .card-sm {
    width: 40px;
    height: 60px;
  }
}

/* ═══════════════════════════════════════════════════════════
   19. UTILITY
   ═══════════════════════════════════════════════════════════ */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}