/* Shared look for the seven games. Rules, timing, and scoring stay in each page. */

body[data-arcade] {
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  background-color: #14121c;
  background-image: var(--scene);
  background-attachment: fixed;
}

body[data-arcade] .header {
  width: min(680px, 100%);
  justify-content: flex-start;
  gap: 10px;
  margin-bottom: 16px;
  padding: 6px 12px 6px 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

body[data-arcade] .header h1 {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

body[data-arcade] .back-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.arcade-host {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.arcade-host svg {
  width: 44px;
  height: 44px;
  display: block;
}

.arcade-host-name {
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.1;
}

.arcade-host-name small {
  display: block;
  margin-top: 2px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  opacity: 0.75;
}

body[data-arcade] .arcade-intro {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.98rem;
  line-height: 1.45;
  margin: -8px 0 18px;
}

body[data-arcade="memory"] {
  --scene:
    radial-gradient(circle at 10% 12%, rgba(233, 69, 96, 0.55), transparent 28%),
    radial-gradient(circle at 90% 6%, rgba(255, 213, 79, 0.32), transparent 22%),
    radial-gradient(ellipse at 50% 120%, rgba(46, 140, 100, 0.5), transparent 46%),
    linear-gradient(165deg, #2a1024 0%, #4a1840 46%, #173028 100%);
}

body[data-arcade="memory"] .setup-screen,
body[data-arcade="memory"] .modal-content {
  background: linear-gradient(165deg, rgba(74, 24, 64, 0.94), rgba(28, 16, 32, 0.96));
  border: 2px solid #ffd54f;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

body[data-arcade="memory"] .card-back {
  background:
    radial-gradient(circle at 30% 28%, rgba(255, 213, 79, 0.95) 0 7%, transparent 8%),
    repeating-linear-gradient(45deg, #6b2148 0 7px, #3d1430 7px 14px);
  border: 2px solid #ffd54f;
}

body[data-arcade="memory"] .card-back::after {
  content: "";
}

body[data-arcade="tetris"] {
  --scene:
    radial-gradient(circle at 8% 20%, rgba(0, 212, 232, 0.4), transparent 24%),
    radial-gradient(circle at 92% 12%, rgba(255, 213, 79, 0.32), transparent 20%),
    radial-gradient(circle at 80% 88%, rgba(255, 110, 64, 0.35), transparent 24%),
    radial-gradient(circle at 18% 86%, rgba(124, 107, 255, 0.4), transparent 26%),
    linear-gradient(160deg, #12102a 0%, #1c1860 50%, #241438 100%);
}

body[data-arcade="tetris"] .game-board {
  border: 4px solid transparent;
  background:
    linear-gradient(#070814, #070814) padding-box,
    linear-gradient(180deg, #00d4e8, #ffd54f, #7c6bff, #ff6e40) border-box;
  box-shadow: 0 0 28px rgba(0, 212, 232, 0.28);
}

body[data-arcade="tetris"] .info-box {
  background: rgba(18, 16, 48, 0.72);
  border: 1px solid rgba(0, 212, 232, 0.35);
}

body[data-arcade="tetris"] .modal-content {
  background: linear-gradient(165deg, #221c58, #12102a);
  border-color: #00d4e8;
}

body[data-arcade="typing"] {
  --scene:
    radial-gradient(circle at 50% 0%, rgba(255, 196, 90, 0.28), transparent 30%),
    linear-gradient(180deg, #16324a 0%, #1d5c62 42%, #143028 100%);
}

body[data-arcade="typing"] .game-container {
  background: linear-gradient(180deg, #7ec8e8 0%, #3d8eb8 28%, #1d5c62 62%, #143028 100%);
  border: 3px solid #e8c872;
  box-shadow: inset 0 0 40px rgba(255, 220, 140, 0.18);
}

body[data-arcade="typing"] .stat {
  background: rgba(8, 24, 32, 0.55);
  border: 1px solid rgba(232, 200, 114, 0.4);
}

body[data-arcade="typing"] .modal-content {
  background: linear-gradient(165deg, #1d4a44, #10241f);
  border-color: #e8c872;
}

body[data-arcade="battle"] {
  --scene:
    radial-gradient(circle at 15% 10%, rgba(255, 107, 53, 0.4), transparent 24%),
    radial-gradient(circle at 85% 8%, rgba(79, 195, 247, 0.4), transparent 24%),
    radial-gradient(ellipse at 50% 110%, rgba(102, 187, 106, 0.4), transparent 40%),
    linear-gradient(165deg, #1a2748 0%, #1e3d32 100%);
}

body[data-arcade="battle"] .setup-screen,
body[data-arcade="battle"] .modal-content {
  background: linear-gradient(165deg, rgba(30, 48, 90, 0.94), rgba(18, 36, 32, 0.96));
  border: 2px solid #ffcb05;
}

body[data-arcade="math"] {
  --scene:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    radial-gradient(circle at 88% 12%, rgba(255, 179, 0, 0.28), transparent 22%),
    linear-gradient(165deg, #241448 0%, #3a2070 48%, #1a2048 100%);
  background-size: 28px 28px, 28px 28px, auto, auto;
}

body[data-arcade="math"] .setup-screen,
body[data-arcade="math"] .modal-content,
body[data-arcade="math"] .start-screen .how-to {
  background: linear-gradient(165deg, rgba(58, 32, 112, 0.92), rgba(22, 16, 48, 0.95));
  border: 2px solid #b388ff;
}

body[data-arcade="simon"] {
  --scene:
    radial-gradient(circle at 0% 0%, rgba(46, 204, 113, 0.72), transparent 42%),
    radial-gradient(circle at 100% 0%, rgba(231, 76, 60, 0.72), transparent 42%),
    radial-gradient(circle at 0% 100%, rgba(241, 196, 15, 0.62), transparent 44%),
    radial-gradient(circle at 100% 100%, rgba(52, 152, 219, 0.72), transparent 44%),
    linear-gradient(#121212, #121212);
}

body[data-arcade="simon"] .simon-board {
  background: #1a1a1a;
  box-shadow: 0 0 0 10px #2c2c2c, 0 18px 40px rgba(0, 0, 0, 0.45);
}

body[data-arcade="simon"] .center-circle {
  background: radial-gradient(circle at 40% 35%, #3a3a3a, #111);
  border: 4px solid #ffd54f;
}

body[data-arcade="simon"] .modal-content,
body[data-arcade="simon"] .how-to {
  background: #1c1c1c;
  border: 2px solid #ffd54f;
}

body[data-arcade="2048"] {
  --scene:
    radial-gradient(circle at 50% 0%, rgba(237, 194, 46, 0.28), transparent 32%),
    linear-gradient(165deg, #4a3424 0%, #6b4a30 45%, #2c2118 100%);
}

body[data-arcade="2048"] .grid-container,
body[data-arcade="2048"] .demo-grid {
  background: #bbada0;
  box-shadow: 0 10px 0 #8f7a68;
}

body[data-arcade="2048"] .cell,
body[data-arcade="2048"] .demo-cell:not([class*="tile-"]) {
  background: rgba(238, 228, 218, 0.35);
}

body[data-arcade="2048"] .stat.score {
  background: linear-gradient(145deg, #edc22e, #f59563);
  color: #3d3428;
}

body[data-arcade="2048"] .stat.best {
  background: rgba(255, 247, 234, 0.12);
  color: #ffe7b0;
  border-color: #ffe7b0;
}

body[data-arcade="2048"] .modal-content,
body[data-arcade="2048"] .how-to {
  background: linear-gradient(165deg, #6b4a30, #2c2118);
  border: 2px solid #edc22e;
}

body[data-arcade="2048"] h1,
body[data-arcade="2048"] .start-screen h2 {
  color: #fff7ea;
}

@media (max-width: 520px) {
  .arcade-host-name { display: none; }
  body[data-arcade] .header { border-radius: 18px; }
  body[data-arcade] .header h1 { font-size: 1.05rem; }
}