/* =========================================================================
   PRASUN GAMES — SOLITAIRE — style.css
   FINAL CORRECTED VERSION

   Designed to work with the rebuilt Klondike Solitaire app.js.

   Important:
   - JavaScript controls card "top" positions.
   - CSS does NOT override card top positions when selected.
   - Dragging uses position: fixed + transform from app.js.
   - Tableau remains horizontally scrollable on small screens.
   - Pile containers remain stable drop targets.
   ========================================================================= */


/* =========================================================================
   DESIGN TOKENS
   ========================================================================= */

:root {

  /* ----------------------------- Site ----------------------------------- */

  --site-bg: #0a0e18;
  --site-bg-alt: #0d1322;

  --panel-bg: rgba(255, 255, 255, 0.045);
  --panel-border: rgba(255, 255, 255, 0.09);
  --panel-blur: 14px;


  /* ----------------------------- Text ----------------------------------- */

  --text-primary: #e9edf6;
  --text-muted: #90a0ba;
  --text-faint: #5c6b85;


  /* --------------------------- Brand ------------------------------------ */

  --accent: #2dd48a;
  --accent-strong: #1fb877;
  --accent-soft: rgba(45, 212, 138, 0.16);
  --accent-ring: rgba(45, 212, 138, 0.55);

  --danger: #f2586b;
  --danger-soft: rgba(242, 88, 107, 0.18);

  --gold: #f2c66d;


  /* ----------------------------- Felt ----------------------------------- */

  --felt-1: #0e3a26;
  --felt-2: #124a2f;
  --felt-3: #0a2d1d;


  /* ----------------------------- Cards ---------------------------------- */

  --card-white: #fbfbf9;
  --card-border: rgba(20, 30, 25, 0.14);

  --card-red: #c62438;
  --card-black: #1c2430;

  --card-back-1: #1a6b46;
  --card-back-2: #0f4a30;


  /* ----------------------- Responsive cards ----------------------------- */

  /*
     Width is intentionally based on viewport width.

     The board itself can become horizontally scrollable on smaller
     screens, which prevents the 7-column tableau from becoming unusable.
  */

  --card-width: clamp(44px, 9.4vw, 96px);
  --card-height: calc(var(--card-width) * 1.42);
  --card-radius: calc(var(--card-width) * 0.11);


  /* ----------------------------- Fonts ---------------------------------- */

  --font-display:
    "Sora",
    "Segoe UI",
    system-ui,
    sans-serif;

  --font-body:
    "Inter",
    "Segoe UI",
    system-ui,
    sans-serif;


  color-scheme: dark;
}


/* =========================================================================
   RESET / BASE
   ========================================================================= */

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

html {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--site-bg);
}

body {
  margin: 0;
  padding: 0;

  min-height: 100vh;

  background:
    radial-gradient(
      circle at 50% -20%,
      rgba(45, 212, 138, 0.035),
      transparent 40%
    ),
    var(--site-bg);

  color: var(--text-primary);

  font-family: var(--font-body);
  line-height: 1.55;

  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

button {
  font-family: inherit;
}

ul {
  padding-left: 1.2em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}


/* =========================================================================
   ACCESSIBILITY
   ========================================================================= */

.sr-only {
  position: absolute;

  width: 1px;
  height: 1px;

  padding: 0;
  margin: -1px;

  overflow: hidden;

  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);

  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;

  left: 8px;
  top: -60px;

  background: var(--accent);
  color: #06231a;

  padding: 10px 16px;

  border-radius: 8px;

  font-weight: 600;

  z-index: 1000;

  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 8px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}


/* =========================================================================
   HEADER
   ========================================================================= */

.site-header {
  position: sticky;
  top: 0;

  z-index: 50;

  background:
    linear-gradient(
      180deg,
      rgba(13, 19, 34, 0.98),
      rgba(13, 19, 34, 0.94)
    );

  border-bottom: 1px solid rgba(255, 255, 255, 0.06);

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header-inner {
  width: 100%;
  max-width: 1200px;

  margin: 0 auto;

  padding: 14px 20px;

  display: flex;
  align-items: center;
  justify-content: space-between;

  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;

  gap: 10px;

  color: var(--text-primary);

  text-decoration: none;

  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;

  white-space: nowrap;
}

.brand-icon {
  font-size: 1.3rem;
}

.site-nav {
  display: flex;
  align-items: center;

  gap: 22px;
}

.site-nav a {
  color: var(--text-muted);

  text-decoration: none;

  font-weight: 500;
  font-size: 0.95rem;

  transition:
    color 0.15s ease,
    opacity 0.15s ease;
}

.site-nav a:hover {
  color: var(--accent);
}


/* =========================================================================
   PAGE INTRO
   ========================================================================= */

.page-intro {
  padding: 34px 20px 10px;
}

.page-intro-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.page-intro h1 {
  margin: 0 0 8px;

  font-family: var(--font-display);

  font-size: clamp(1.6rem, 3vw, 2.3rem);

  line-height: 1.15;

  letter-spacing: -0.02em;
}

.page-intro p {
  max-width: 60ch;

  margin: 0;

  color: var(--text-muted);
}


/* =========================================================================
   GAME SECTION / APP WRAPPER
   ========================================================================= */

.game-section {
  padding: 18px 20px 40px;
}

.solitaire-app {
  width: 100%;
  max-width: 1180px;

  margin: 0 auto;

  display: flex;
  flex-direction: column;

  gap: 14px;
}


/* =========================================================================
   TOOLBAR
   ========================================================================= */

.toolbar {
  display: flex;
  flex-wrap: wrap;

  align-items: center;
  justify-content: space-between;

  gap: 14px;

  padding: 14px 18px;

  border-radius: 16px;

  background: var(--panel-bg);

  border: 1px solid var(--panel-border);

  backdrop-filter: blur(var(--panel-blur));
  -webkit-backdrop-filter: blur(var(--panel-blur));
}

.toolbar-group {
  display: flex;
  align-items: center;

  gap: 10px;

  flex-wrap: wrap;
}

.toolbar-stats {
  gap: 20px;
}

.toolbar-actions {
  display: flex;
  align-items: center;

  gap: 10px;

  flex-wrap: wrap;
}


/* =========================================================================
   STATISTICS
   ========================================================================= */

.stat {
  display: flex;
  flex-direction: column;
  align-items: flex-start;

  min-width: 58px;
}

.stat-label {
  color: var(--text-faint);

  font-size: 0.68rem;

  text-transform: uppercase;

  letter-spacing: 0.08em;
}

.stat-value {
  font-family: var(--font-display);

  font-weight: 700;

  font-size: 1.15rem;

  font-variant-numeric: tabular-nums;

  line-height: 1.2;
}


/* =========================================================================
   BUTTONS
   ========================================================================= */

.btn {
  appearance: none;

  border: 1px solid rgba(255, 255, 255, 0.12);

  background: rgba(255, 255, 255, 0.04);

  color: var(--text-primary);

  padding: 9px 15px;

  border-radius: 10px;

  font-size: 0.88rem;
  font-weight: 600;

  line-height: 1.2;

  cursor: pointer;

  white-space: nowrap;

  transition:
    transform 0.12s ease,
    background 0.15s ease,
    border-color 0.15s ease,
    opacity 0.15s ease,
    filter 0.15s ease;
}

.btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.09);

  border-color: rgba(255, 255, 255, 0.18);

  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.38;

  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
}

.btn-primary {
  background:
    linear-gradient(
      180deg,
      var(--accent),
      var(--accent-strong)
    );

  border-color: transparent;

  color: #06231a;
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.06);
}

.btn-large {
  padding: 12px 26px;

  font-size: 1rem;
}


/* =========================================================================
   SOLITAIRE BOARD
   ========================================================================= */

.board {
  position: relative;

  width: 100%;

  border-radius: 22px;

  padding: clamp(14px, 2.4vw, 26px);

  border: 1px solid rgba(0, 0, 0, 0.35);

  background:
    radial-gradient(
      circle at 50% -10%,
      rgba(255, 255, 255, 0.07),
      transparent 55%
    ),
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.028) 0 2px,
      transparent 2px 7px
    ),
    linear-gradient(
      165deg,
      var(--felt-2) 0%,
      var(--felt-1) 55%,
      var(--felt-3) 100%
    );

  box-shadow:
    inset 0 0 90px rgba(0, 0, 0, 0.55),
    inset 0 0 2px rgba(255, 255, 255, 0.08),
    0 22px 50px rgba(0, 0, 0, 0.45);

  /*
     The JS uses pointer events for dragging.

     pan-y allows natural vertical page movement on touch while
     horizontal overflow is handled by the board itself.
  */
  overflow-x: auto;
  overflow-y: hidden;

  touch-action: pan-y;

  -webkit-overflow-scrolling: touch;

  scrollbar-width: thin;

  scrollbar-color:
    rgba(255, 255, 255, 0.18)
    transparent;
}

.board::-webkit-scrollbar {
  height: 7px;
}

.board::-webkit-scrollbar-track {
  background: transparent;
}

.board::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.18);

  border-radius: 999px;
}


/* =========================================================================
   TOP ROW
   ========================================================================= */

.board-top-row {
  display: flex;
  align-items: flex-start;

  justify-content: space-between;

  gap: 14px;

  margin-bottom: clamp(14px, 2.4vw, 24px);

  min-width: max-content;
}

.stock-waste-group {
  display: flex;

  align-items: flex-start;

  gap: calc(var(--card-width) * 0.16);
}

.foundations {
  display: flex;

  align-items: flex-start;

  gap: calc(var(--card-width) * 0.16);
}


/* =========================================================================
   TABLEAU
   ========================================================================= */

.tableau {
  display: flex;

  align-items: flex-start;

  gap: calc(var(--card-width) * 0.16);

  min-width: max-content;

  /*
     Important for horizontal scrolling:
     the tableau itself must not shrink.
  */
  width: max-content;
}

.column {
  position: relative;

  flex: 0 0 var(--card-width);

  width: var(--card-width);

  height: clamp(300px, 42vh, 460px);

  min-height: 300px;
}


/* =========================================================================
   PILES
   ========================================================================= */

.pile {
  position: relative;

  flex: 0 0 var(--card-width);

  width: var(--card-width);

  height: var(--card-height);

  min-width: var(--card-width);
  min-height: var(--card-height);
}


/*
   JavaScript uses [data-location] elements as drop targets.

   Make sure the pile itself receives pointer events even when the
   child card is under the pointer.
*/

[data-location] {
  position: relative;
}


/* =========================================================================
   EMPTY SLOTS
   ========================================================================= */

.empty-slot {
  position: absolute;

  inset: 0;

  display: flex;

  align-items: center;
  justify-content: center;

  border: 2px dashed rgba(255, 255, 255, 0.22);

  border-radius: var(--card-radius);

  color: rgba(255, 255, 255, 0.3);

  font-family: var(--font-display);

  font-weight: 700;

  font-size: calc(var(--card-width) * 0.34);

  user-select: none;

  pointer-events: none;

  transition:
    box-shadow 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.empty-slot.foundation-empty {
  border-style: solid;

  border-color: rgba(255, 255, 255, 0.15);
}

.empty-slot.foundation-empty.red {
  color: rgba(198, 36, 56, 0.45);
}

.empty-slot.foundation-empty.black {
  color: rgba(255, 255, 255, 0.28);
}

.empty-slot.stock-empty {
  border-style: solid;

  cursor: pointer;

  pointer-events: none;
}

.empty-slot.waste-empty {
  border: none;
}

.empty-slot.tableau-empty {
  font-size: calc(var(--card-width) * 0.4);
}

.recycle-icon {
  font-size: calc(var(--card-width) * 0.4);

  color: rgba(255, 255, 255, 0.55);
}

.pile.stock {
  cursor: pointer;
}


/* =========================================================================
   CARDS
   ========================================================================= */

.card {
  position: absolute;

  left: 0;

  width: var(--card-width);
  height: var(--card-height);

  border-radius: var(--card-radius);

  background: var(--card-white);

  border: 1px solid var(--card-border);

  box-shadow:
    0 2px 5px rgba(0, 0, 0, 0.28),
    0 1px 1px rgba(0, 0, 0, 0.18);

  user-select: none;

  /*
     Important for the JS pointer-drag system.
  */
  touch-action: none;

  cursor: grab;

  overflow: hidden;

  /*
     JavaScript controls top positions.
     CSS must NOT transition or override top while dragging.
  */
  transition:
    box-shadow 0.15s ease,
    filter 0.15s ease;

  -webkit-user-select: none;
}

.card.face-down {
  cursor: pointer;
}

.card.dragging {
  cursor: grabbing;

  box-shadow:
    0 20px 34px rgba(0, 0, 0, 0.5),
    0 5px 12px rgba(0, 0, 0, 0.25);

  filter: brightness(1.03);

  /*
     app.js sets position, top, left and transform.
     Do not fight those values here.
  */
  transition: none !important;

  pointer-events: none;
}


/* =========================================================================
   SELECTED CARD

   IMPORTANT:
   Do NOT set `top` here.

   app.js calculates the exact top position for every card.
   The previous CSS used:

       top: calc(...)

   which could override the JS-generated stack position and make
   selected cards jump.
   ========================================================================= */

.card.selected {
  box-shadow:
    0 0 0 3px var(--accent-ring),
    0 10px 18px rgba(0, 0, 0, 0.4);

  /*
     Only visually lift the card.

     The JavaScript remains the source of truth for `top`.
  */
  transform: translateY(-6px);

  z-index: 100 !important;
}


/*
   If a selected card is being dragged, app.js controls transform.
   Therefore don't apply the selection transform during dragging.
*/

.card.selected.dragging {
  transform: none;
}


/* =========================================================================
   CARD FACE
   ========================================================================= */

.card-face {
  position: relative;

  display: block;

  width: 100%;
  height: 100%;
}

.card.red .card-face {
  color: var(--card-red);
}

.card.black .card-face {
  color: var(--card-black);
}


/* =========================================================================
   CARD CORNERS
   ========================================================================= */

.card-corner {
  position: absolute;

  display: flex;

  flex-direction: column;

  align-items: center;

  line-height: 1;

  font-weight: 700;

  font-family: var(--font-display);

  z-index: 2;
}

.card-corner.top-left {
  top: 6%;
  left: 8%;
}

.card-corner.bottom-right {
  right: 8%;
  bottom: 6%;

  transform: rotate(180deg);
}

.c-rank {
  font-size: calc(var(--card-width) * 0.2);
}

.c-suit {
  margin-top: 1px;

  font-size: calc(var(--card-width) * 0.17);
}


/* =========================================================================
   CARD CENTER PIP
   ========================================================================= */

.card-pip {
  position: absolute;

  inset: 0;

  display: flex;

  align-items: center;
  justify-content: center;

  font-size: calc(var(--card-width) * 0.46);

  opacity: 0.92;

  z-index: 1;
}


/* =========================================================================
   CARD BACK
   ========================================================================= */

.card-back {
  position: absolute;

  inset: 3%;

  border-radius: calc(var(--card-radius) * 0.7);

  background:
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.08) 0 4px,
      transparent 4px 9px
    ),
    linear-gradient(
      155deg,
      var(--card-back-1),
      var(--card-back-2)
    );

  border: 1px solid rgba(255, 255, 255, 0.22);

  box-shadow:
    inset 0 0 0 3px rgba(255, 255, 255, 0.06);
}

.stock-card {
  box-shadow:
    0 2px 5px rgba(0, 0, 0, 0.28),
    -2px 2px 0 -1px rgba(0, 0, 0, 0.12),
    -4px 4px 0 -2px rgba(0, 0, 0, 0.1),
    0 1px 1px rgba(0, 0, 0, 0.18);
}


/* =========================================================================
   DROP FEEDBACK
   ========================================================================= */

.drop-valid {
  box-shadow:
    0 0 0 3px var(--accent-ring) inset;

  border-radius: var(--card-radius);
}

.drop-invalid {
  box-shadow:
    0 0 0 3px rgba(242, 88, 107, 0.6) inset;

  border-radius: var(--card-radius);
}


/* =========================================================================
   INVALID MOVE FLASH
   ========================================================================= */

.invalid-flash {
  animation: flashRed 0.35s ease;

  border-radius: var(--card-radius);
}

@keyframes flashRed {

  0%,
  100% {
    box-shadow: none;
  }

  40% {
    box-shadow:
      0 0 0 3px var(--danger) inset;
  }
}


/* =========================================================================
   INVALID MOVE SHAKE
   ========================================================================= */

.invalid-shake {
  animation: shakeX 0.3s ease;
}

@keyframes shakeX {

  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-7px);
  }

  75% {
    transform: translateX(7px);
  }
}


/*
   If a selected card is shaken, keep the selection lift while
   allowing the shake animation to work.
*/

.card.selected.invalid-shake {
  animation:
    shakeSelected 0.3s ease;
}

@keyframes shakeSelected {

  0%,
  100% {
    transform: translateY(-6px) translateX(0);
  }

  25% {
    transform: translateY(-6px) translateX(-7px);
  }

  75% {
    transform: translateY(-6px) translateX(7px);
  }
}


/* =========================================================================
   HINT
   ========================================================================= */

.hint-glow {
  animation: hintPulse 1.4s ease;

  border-radius: var(--card-radius);
}

@keyframes hintPulse {

  0%,
  100% {
    box-shadow: none;
  }

  50% {
    box-shadow:
      0 0 0 4px var(--gold) inset,
      0 0 18px rgba(242, 198, 109, 0.5);
  }
}


/* =========================================================================
   CARD FLIP
   ========================================================================= */

.card.just-flipped {
  animation: flipIn 0.32s ease;
}

@keyframes flipIn {

  0% {
    transform:
      rotateY(85deg)
      scale(0.9);
  }

  60% {
    transform:
      rotateY(0deg)
      scale(1.05);
  }

  100% {
    transform:
      rotateY(0deg)
      scale(1);
  }
}


/* =========================================================================
   CARD MOVE
   ========================================================================= */

.card.just-moved {
  animation: popIn 0.16s ease-out;
}

@keyframes popIn {

  0% {
    transform:
      scale(0.88);

    opacity: 0.65;
  }

  100% {
    transform:
      scale(1);

    opacity: 1;
  }
}


/* =========================================================================
   BELOW BOARD
   ========================================================================= */

.below-board {
  display: flex;

  flex-wrap: wrap;

  justify-content: space-between;

  gap: 8px;

  padding: 0 4px;

  color: var(--text-faint);

  font-size: 0.82rem;
}

.shortcuts-line kbd {
  background: rgba(255, 255, 255, 0.08);

  border: 1px solid rgba(255, 255, 255, 0.15);

  border-radius: 4px;

  padding: 1px 5px;

  font-size: 0.78rem;

  font-family: var(--font-body);
}


/* =========================================================================
   TOAST
   ========================================================================= */

.toast {
  position: fixed;

  left: 50%;
  bottom: 26px;

  transform:
    translate(-50%, 16px);

  background: rgba(15, 20, 32, 0.92);

  border: 1px solid var(--panel-border);

  color: var(--text-primary);

  padding: 10px 18px;

  border-radius: 999px;

  font-size: 0.88rem;

  opacity: 0;

  pointer-events: none;

  transition:
    opacity 0.2s ease,
    transform 0.2s ease;

  z-index: 200;

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  white-space: nowrap;

  max-width: calc(100vw - 30px);

  overflow: hidden;
  text-overflow: ellipsis;
}

.toast.show {
  opacity: 1;

  transform:
    translate(-50%, 0);
}


/* =========================================================================
   WIN MODAL
   ========================================================================= */

.win-modal {
  position: fixed;

  inset: 0;

  z-index: 500;

  display: flex;

  align-items: center;
  justify-content: center;

  padding: 20px;

  background: rgba(4, 6, 12, 0.66);

  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);

  opacity: 0;

  transition: opacity 0.22s ease;
}

.win-modal.show {
  opacity: 1;
}

.win-modal[hidden] {
  display: none;
}

.win-modal-card {
  position: relative;

  width: 100%;
  max-width: 380px;

  padding: 38px 34px 30px;

  text-align: center;

  background:
    linear-gradient(
      180deg,
      var(--site-bg-alt),
      var(--site-bg)
    );

  border: 1px solid var(--panel-border);

  border-radius: 20px;

  box-shadow:
    0 30px 70px rgba(0, 0, 0, 0.55);

  transform:
    scale(0.92)
    translateY(10px);

  transition:
    transform 0.22s ease;
}

.win-modal.show .win-modal-card {
  transform:
    scale(1)
    translateY(0);
}

.win-modal-close {
  position: absolute;

  top: 12px;
  right: 14px;

  width: 36px;
  height: 36px;

  display: flex;
  align-items: center;
  justify-content: center;

  padding: 0;

  background: none;

  border: none;

  color: var(--text-muted);

  font-size: 1.4rem;

  cursor: pointer;

  line-height: 1;

  border-radius: 8px;
}

.win-modal-close:hover {
  background: rgba(255, 255, 255, 0.06);

  color: var(--text-primary);
}

.win-emoji {
  font-size: 2.6rem;

  margin-bottom: 6px;
}

.win-modal-card h2 {
  margin: 0 0 6px;

  font-family: var(--font-display);

  font-size: 1.5rem;

  line-height: 1.2;
}

.win-modal-card p {
  margin: 0 0 20px;

  color: var(--text-muted);
}


/* =========================================================================
   WIN STATS
   ========================================================================= */

.win-stats {
  display: flex;

  align-items: center;
  justify-content: center;

  gap: 30px;

  margin-bottom: 24px;
}

.win-stats > div {
  display: flex;

  flex-direction: column;

  gap: 2px;
}

.win-stat-label {
  color: var(--text-faint);

  font-size: 0.7rem;

  text-transform: uppercase;

  letter-spacing: 0.08em;
}

.win-stat-value {
  color: var(--gold);

  font-family: var(--font-display);

  font-weight: 700;

  font-size: 1.3rem;

  font-variant-numeric: tabular-nums;
}


/* =========================================================================
   SEO CONTENT
   ========================================================================= */

.seo-content,
.related-games {
  border-top: 1px solid rgba(255, 255, 255, 0.06);

  padding: 40px 20px;
}

.seo-content-inner,
.related-games-inner {
  max-width: 900px;

  margin: 0 auto;
}

.seo-content h2 {
  margin:
    1.6em 0 0.5em;

  font-family: var(--font-display);

  font-size: 1.25rem;

  line-height: 1.3;
}

.seo-content h2:first-child {
  margin-top: 0;
}

.seo-content p,
.seo-content li {
  color: var(--text-muted);
}


/* =========================================================================
   RELATED GAMES
   ========================================================================= */

.related-games-grid {
  display: flex;

  flex-wrap: wrap;

  gap: 14px;
}

.related-card {
  display: flex;

  align-items: center;

  gap: 10px;

  padding: 14px 20px;

  border-radius: 14px;

  background: var(--panel-bg);

  border: 1px solid var(--panel-border);

  color: var(--text-primary);

  text-decoration: none;

  font-weight: 600;

  transition:
    transform 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.related-card:hover {
  transform: translateY(-2px);

  border-color: var(--accent-ring);

  background: rgba(255, 255, 255, 0.06);
}

.related-card-icon {
  font-size: 1.3rem;
}


/* =========================================================================
   FOOTER
   ========================================================================= */

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);

  background: var(--site-bg-alt);

  padding: 26px 20px 34px;
}

.site-footer-inner {
  max-width: 1200px;

  margin: 0 auto;

  display: flex;

  flex-direction: column;

  align-items: center;

  gap: 14px;

  text-align: center;
}

.footer-links {
  display: flex;

  flex-wrap: wrap;

  justify-content: center;

  gap: 18px;
}

.footer-links a {
  color: var(--text-muted);

  text-decoration: none;

  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-copy {
  margin: 0;

  color: var(--text-faint);

  font-size: 0.82rem;
}

.footer-copy a {
  color: var(--text-muted);

  text-decoration: underline;
}


/* =========================================================================
   RESPONSIVE — TABLET
   ========================================================================= */

@media (max-width: 1024px) {

  .board-top-row {
    flex-wrap: wrap;
  }

}


/* =========================================================================
   RESPONSIVE — 768px
   ========================================================================= */

@media (max-width: 768px) {

  .site-header-inner {
    padding:
      12px 16px;
  }

  .page-intro {
    padding:
      22px 16px 4px;
  }

  .game-section {
    padding:
      14px 16px 32px;
  }

  .toolbar {
    padding:
      12px 14px;

    gap: 10px;
  }

  .toolbar-actions {
    gap: 8px;
  }

  .btn {
    padding:
      8px 12px;

    font-size: 0.82rem;
  }

  /*
     Slightly smaller board padding gives more usable space.
  */

  .board {
    padding:
      14px;
  }

}


/* =========================================================================
   RESPONSIVE — 600px
   ========================================================================= */

@media (max-width: 600px) {

  .site-header-inner {
    gap: 10px;
  }

  .site-nav {
    gap: 12px;
  }

  .toolbar {
    justify-content: center;
  }

  .toolbar-stats {
    order: 1;

    width: 100%;

    justify-content: center;
  }

  .toolbar-actions {
    order: 2;

    width: 100%;

    justify-content: center;
  }

  .below-board {
    justify-content: center;

    text-align: center;
  }

  .win-stats {
    gap: 20px;
  }

  .win-modal {
    padding: 14px;
  }

  .win-modal-card {
    padding:
      34px 22px 26px;
  }

}


/* =========================================================================
   RESPONSIVE — 480px
   ========================================================================= */

@media (max-width: 480px) {

  .brand-name {
    font-size: 1rem;
  }

  .brand {
    gap: 7px;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a {
    font-size: 0.82rem;
  }

  .shortcuts-line {
    display: none;
  }

  /*
     Keep the toolbar usable even when buttons wrap.
  */

  .toolbar-actions {
    width: 100%;
  }

  .toolbar-actions .btn {
    flex: 1 1 auto;
  }

}


/* =========================================================================
   RESPONSIVE — VERY SMALL PHONES
   ========================================================================= */

@media (max-width: 390px) {

  :root {
    --card-width: clamp(42px, 11vw, 76px);
  }

  .site-header-inner {
    padding:
      10px 12px;
  }

  .site-nav {
    gap: 10px;
  }

  .site-nav a {
    font-size: 0.78rem;
  }

  .page-intro {
    padding:
      18px 12px 4px;
  }

  .game-section {
    padding:
      12px 12px 28px;
  }

  .board {
    padding:
      12px;
  }

  .card-corner.top-left {
    top: 4%;
    left: 6%;
  }

  .card-corner.bottom-right {
    right: 6%;
    bottom: 4%;
  }

}


/* =========================================================================
   LANDSCAPE PHONE
   ========================================================================= */

@media (max-height: 520px) and (orientation: landscape) {

  .site-header-inner {
    padding:
      8px 16px;
  }

  .page-intro {
    padding:
      14px 16px 4px;
  }

  .page-intro h1 {
    font-size: 1.45rem;
  }

  .game-section {
    padding:
      10px 16px 24px;
  }

  .column {
    height: 330px;
  }

}


/* =========================================================================
   REDUCED MOTION
   ========================================================================= */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;

    transition-duration: 0.001ms !important;

    scroll-behavior: auto !important;
  }

}


/* =========================================================================
   END
   ========================================================================= */