/* ============================================================
   DESIGN SYSTEM — The Grand Study
   Dark mahogany + brass/gold + cream + deep shadows
   ============================================================ */
:root {
  --bg-deep: #0a0704;
  --bg-primary: #0f0b08;
  --bg-card: #1a130d;
  --bg-card-hover: #231a12;
  --bg-elevated: #2a1f15;
  --border: #3d3020;
  --border-light: #4a3a28;
  --text-primary: #e8dcc8;
  --text-secondary: #a89878;
  --text-muted: #6a5a42;
  --gold: #c89b3c;
  --gold-light: #ddb04a;
  --gold-pale: #f0d78c;
  --gold-glow: rgba(200,155,60,.12);
  --gold-glow-strong: rgba(200,155,60,.25);
  --burgundy: #7d2e2e;
  --burgundy-light: #a04040;
  --cream: #e8dcc8;
  --wood-light: #6b4e2e;
  --wood-dark: #3d3425;
  --felt: #2a3a28;
  --font-display: 'Cinzel', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 40px rgba(0,0,0,.6);
  --shadow-gold: 0 0 60px rgba(200,155,60,.08);
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================================
   GRAIN TEXTURE
   ============================================================ */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0;
}

/* ============================================================
   DECORATIVE BORDER LINE
   ============================================================ */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--gold) 20%,
    var(--gold-pale) 50%,
    var(--gold) 80%,
    transparent 100%
  );
  z-index: 10;
}

/* ============================================================
   LAYOUT
   ============================================================ */
.page {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 0 1.25rem;
}

/* ============================================================
   HEADER
   ============================================================ */
header {
  text-align: center;
  padding: 4rem 0 1rem;
  width: 100%;
  max-width: 800px;
}

.ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 1.5rem;
}

.ornament-line {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.ornament-diamond {
  width: 8px; height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}

h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 3.2rem);
  letter-spacing: .06em;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-pale) 40%, var(--gold) 70%, var(--gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.subtitle {
  font-family: var(--font-body);
  color: var(--text-muted);
  font-size: .85rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-top: .6rem;
  font-weight: 500;
}

/* ============================================================
   GAME CARDS GRID
   ============================================================ */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  width: 100%;
  max-width: 800px;
  margin: 2.5rem 0 3rem;
}

/* ============================================================
   GAME CARD
   ============================================================ */
.game-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform .4s cubic-bezier(.22,1,.36,1),
              border-color .4s,
              box-shadow .4s;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  display: block;
}

.game-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: var(--shadow), var(--shadow-gold), 0 0 80px rgba(200,155,60,.1);
}

.game-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--gold-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity .4s;
  z-index: 1;
  pointer-events: none;
}

.game-card:hover::before { opacity: 1; }

/* ============================================================
   CARD — Preview area
   ============================================================ */
.card-preview {
  position: relative;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.chess-preview {
  background: linear-gradient(135deg, #1a130d 0%, #231a12 100%);
}

.chess-board-mini {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: 160px; height: 160px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 6px 30px rgba(0,0,0,.5);
  transform: perspective(600px) rotateX(12deg) rotateZ(-2deg);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
}

.game-card:hover .chess-board-mini {
  transform: perspective(600px) rotateX(4deg) rotateZ(0deg) scale(1.05);
}

.chess-sq {
  aspect-ratio: 1;
}

.chess-sq.light { background: var(--cream); }
.chess-sq.dark { background: var(--wood-light); }

.chess-sq .piece {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  line-height: 1;
  user-select: none;
}

.backgammon-preview {
  background: linear-gradient(135deg, #12100a 0%, #1e1810 100%);
}

.bg-board-mini {
  width: 200px; height: 130px;
  background: var(--wood-dark);
  border-radius: 8px;
  border: 3px solid var(--wood-light);
  display: flex;
  gap: 4px;
  padding: 6px;
  box-shadow: 0 6px 30px rgba(0,0,0,.5);
  transform: perspective(600px) rotateX(10deg);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
  overflow: hidden;
}

.game-card:hover .bg-board-mini {
  transform: perspective(600px) rotateX(3deg) scale(1.05);
}

.bg-half {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bg-points-row {
  display: flex;
  gap: 2px;
}

.bg-point {
  flex: 1;
  height: 40px;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.bg-point.up { clip-path: polygon(0 100%, 100% 100%, 50% 0); }

.bg-point.t1 { background: var(--gold); opacity: .7; }
.bg-point.t2 { background: var(--wood-light); }

.bg-bar {
  width: 12px;
  background: #1a130d;
  border-radius: 3px;
  flex-shrink: 0;
}

.bg-checker-row {
  display: flex; gap: 2px; justify-content: center;
  position: absolute;
}
.bg-ck {
  width: 10px; height: 10px; border-radius: 50%;
}
.bg-ck.w { background: var(--cream); box-shadow: inset 0 1px 2px rgba(0,0,0,.2); }
.bg-ck.b { background: #2a2235; box-shadow: inset 0 1px 2px rgba(0,0,0,.3); }

/* ============================================================
   CARD — Content area
   ============================================================ */
.card-content {
  position: relative;
  z-index: 2;
  padding: 1.5rem 1.5rem 1.75rem;
  text-align: center;
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .65rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: .6rem;
  padding: .3rem .7rem;
  background: rgba(200,155,60,.08);
  border: 1px solid rgba(200,155,60,.15);
  border-radius: 6px;
}

.card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: .04em;
  color: var(--text-primary);
  margin-bottom: .4rem;
}

.card-desc {
  color: var(--text-secondary);
  font-size: .88rem;
  line-height: 1.6;
  margin-bottom: 1.2rem;
}

.card-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .4rem;
  margin-bottom: 1.2rem;
}

.feature-tag {
  font-size: .7rem;
  padding: .25rem .6rem;
  border-radius: 5px;
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border);
  letter-spacing: .02em;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: .04em;
  transition: gap .3s;
}

.game-card:hover .card-cta {
  gap: .8rem;
}

.cta-arrow {
  display: inline-block;
  transition: transform .3s;
}
.game-card:hover .cta-arrow { transform: translateX(4px); }

/* ============================================================
   BOTTOM ORNAMENT
   ============================================================ */
.bottom-ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 1rem;
}

.bo-line {
  width: 80px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.bo-text {
  font-family: var(--font-display);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center;
  padding: 1rem;
  color: var(--text-muted);
  font-size: .72rem;
  letter-spacing: .05em;
}

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

/* ============================================================
   ENTRANCE ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

header {
  animation: fadeUp .8s ease-out both;
}

.game-card:nth-child(1) {
  animation: fadeUp .8s ease-out .2s both;
}

.game-card:nth-child(2) {
  animation: fadeUp .8s ease-out .35s both;
}

.game-card:nth-child(3) {
  animation: fadeUp .8s ease-out .5s both;
}

.game-card:nth-child(4) {
  animation: fadeUp .8s ease-out .65s both;
}

.bottom-ornament {
  animation: fadeUp .6s ease-out .5s both;
}

/* ============================================================
   TIC TAC TOE PREVIEW
   ============================================================ */
.ttt-preview {
  background: linear-gradient(135deg, #1a130d 0%, #231a12 100%);
}

.ttt-board-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 120px; height: 120px;
  gap: 3px;
  background: var(--border);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 6px 30px rgba(0,0,0,.5);
  transform: perspective(600px) rotateX(12deg) rotateZ(2deg);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
}

.game-card:hover .ttt-board-mini {
  transform: perspective(600px) rotateX(4deg) rotateZ(0deg) scale(1.05);
}

.ttt-cell {
  background: var(--bg-card-hover);
  display: flex; align-items: center; justify-content: center;
  user-select: none;
}

.ttt-cell.ttt-x::after {
  content: '✕';
  color: var(--gold);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
}

.ttt-cell.ttt-o::after {
  content: '◯';
  color: var(--cream);
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
}

/* ============================================================
   CHECKERS PREVIEW
   ============================================================ */
.checkers-preview {
  background: linear-gradient(135deg, #12100a 0%, #1e1810 100%);
}

.checkers-board-mini {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: 160px; height: 160px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 6px 30px rgba(0,0,0,.5);
  transform: perspective(600px) rotateX(12deg) rotateZ(-2deg);
  transition: transform .5s cubic-bezier(.22,1,.36,1);
}

.game-card:hover .checkers-board-mini {
  transform: perspective(600px) rotateX(4deg) rotateZ(0deg) scale(1.05);
}

.ck-sq {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
}

.ck-sq.light { background: #d4c4a0; }
.ck-sq.dark  { background: #6b4e2e; }

.ck-piece {
  width: 68%; height: 68%;
  border-radius: 50%;
}

.ck-piece.lp {
  background: radial-gradient(circle at 35% 35%, #fff, #f0e4cc 60%, #c8b89a);
  border: 1px solid #c8b89a;
  box-shadow: 0 1px 3px rgba(0,0,0,.3);
}

.ck-piece.dp {
  background: radial-gradient(circle at 35% 35%, #4a3f55, #2a2235 60%, #3d3350);
  border: 1px solid #3d3350;
  box-shadow: 0 1px 3px rgba(0,0,0,.4);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 680px) {
  header { padding: 3rem 0 .5rem; }
  .games-grid { gap: 1.2rem; margin: 2rem 0; }
  .card-preview { height: 180px; }
  .card-content { padding: 1.2rem 1.2rem 1.5rem; }
}