/* ======================================================
   TETRIS – Global Styles
   ====================================================== */

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

:root {
  --bg:         #0d0d1a;
  --bg2:        #13132a;
  --panel:      #1a1a35;
  --border:     #2e2e6e;
  --accent:     #7c3aed;
  --accent2:    #a855f7;
  --text:       #e2e8f0;
  --text-dim:   #64748b;
  --danger:     #ef4444;
  --success:    #22c55e;
  --gold:       #f59e0b;
  --cell:       30px;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', 'Arial', sans-serif;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation; /* allows tap/click on all mobile browsers */
}

/* ======================================================
   SCREENS
   ====================================================== */

.screen {
  display: none;
  position: fixed;
  inset: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  padding: calc(env(safe-area-inset-top, 0px) + 20px) 20px calc(env(safe-area-inset-bottom, 0px) + 75px);
  overflow-y: auto;
  background: var(--bg);
}

.screen.active {
  display: flex;
}

/* Utility: hide any element by toggling the 'hidden' class via JS */
.hidden { display: none !important; }

/* Footer pinned to the very bottom of the viewport inside any screen */
.screen .site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  margin-top: 0;
  border-radius: 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 4px);
  z-index: 50;
}

/* How-to & Scores footers scroll with content — not fixed */
#screen-howto .site-footer,
#screen-scores .site-footer {
  position: relative;
  padding-bottom: 16px;
}

/* ======================================================
   MENU SCREEN
   ====================================================== */

.logo-wrap {
  text-align: center;
}

.logo {
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  background: linear-gradient(135deg, var(--accent2), #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  animation: logoGlow 3s ease-in-out infinite alternate;
}

@keyframes logoGlow {
  from { filter: drop-shadow(0 0 8px #7c3aed88); }
  to   { filter: drop-shadow(0 0 24px #a855f7cc); }
}

.logo-sub {
  color: var(--text-dim);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-top: 4px;
}

.menu-stats {
  display: flex;
  gap: 20px;
}

.stat-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 24px;
  text-align: center;
  min-width: 130px;
}

.stat-label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.stat-value {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent2);
  margin-top: 4px;
}

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

.btn {
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 14px 40px;
  transition: transform 0.1s, box-shadow 0.2s, background 0.2s;
  min-width: 200px;
  user-select: none;
}

.btn:active { transform: scale(0.96); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  box-shadow: 0 4px 20px #7c3aed55;
}

.btn-primary:hover {
  box-shadow: 0 6px 30px #a855f788;
}

.btn-secondary {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-download {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-download:hover {
  background: var(--accent);
  color: #fff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.75rem;
  min-width: unset;
  width: 100%;
  background: var(--panel);
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 6px;
}

/* ======================================================
   HOW TO PLAY SCREEN
   ====================================================== */

#screen-howto {
  justify-content: flex-start;
  gap: 14px;
  padding: calc(env(safe-area-inset-top, 0px) + 20px) 16px 20px;
  overflow-y: auto;
}

.section-title {
  font-size: 1.4rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
  flex-shrink: 0;
}

/* BACK button full-width on the howto screen so it doesn't look orphaned */
#screen-howto .btn {
  width: 100%;
  max-width: 360px;
  min-width: unset;
}

.howto-content {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  max-width: 360px;
  width: 100%;
}

.howto-section-label {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent2);
  font-weight: 700;
  margin-bottom: 4px;
  opacity: 0.8;
}

.howto-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  font-size: 0.88rem;
}

.howto-key {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-weight: 600;
  min-width: 72px;
  flex-shrink: 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--accent2);
  white-space: nowrap;
}

.howto-divider {
  border-top: 1px solid var(--border);
  margin: 10px 0 8px;
}

.howto-tip {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.6;
  margin-top: 6px;
}

@media (max-width: 400px) {
  #screen-howto {
    gap: 10px;
    padding: calc(env(safe-area-inset-top, 0px) + 14px) 12px 14px;
  }

  .section-title {
    font-size: 1.1rem;
  }

  .howto-content {
    padding: 12px 14px;
    border-radius: 12px;
  }

  .howto-row {
    gap: 10px;
    padding: 5px 0;
    font-size: 0.82rem;
  }

  .howto-key {
    min-width: 62px;
    font-size: 0.75rem;
    padding: 3px 6px;
  }

  .howto-tip {
    font-size: 0.72rem;
  }
}

/* ======================================================
   MENU – Mobile
   ====================================================== */

@media (max-width: 600px) {
  #screen-menu {
    padding-top: calc(env(safe-area-inset-top, 0px) + 40px);
    gap: 16px;
  }
  .logo { font-size: 3rem; }
  .logo-sub { font-size: 0.75rem; }
  .menu-stats { gap: 12px; }
  .stat-box { min-width: 100px; padding: 10px 14px; }
  .stat-value { font-size: 1.4rem; }
  /* Full-width menu buttons, capped to readable width */
  #screen-menu .btn {
    width: 100%;
    max-width: 320px;
    min-width: unset;
    padding: 13px 20px;
  }
}

/* ======================================================
   GAME SCREEN
   ====================================================== */

#screen-game {
  flex-direction: column;
  gap: 4px;
  padding: 8px 8px 82px;
  overflow: hidden;
  justify-content: center;
}

.game-layout {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
}

/* Side Panel (single combined right-side panel) */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 130px;
}

.panel-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  text-align: center;
}

.panel-label {
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.panel-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

/* Compact value variant – used for HIGH SCORE (can be a long number) */
.panel-value-sm {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  word-break: break-all;
}

.panel-hint {
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Board */
.board-wrap {
  position: relative;
  border: 2px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 0 30px #7c3aed33, inset 0 0 20px #00000066;
  line-height: 0;
}

#board {
  display: block;
  background: var(--bg2);
  touch-action: none; /* block browser gestures on canvas */
}

#next-canvas {
  display: block;
  background: var(--bg);
  border-radius: 6px;
  width: 100%;
  height: auto;
}

/* Overlays */
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  z-index: 10;
}

.overlay.hidden { display: none; }

/* Full-page Game Over screen */
.overlay-go {
  position: fixed;
  inset: 0;
  border-radius: 0;
  z-index: 200;
  background: var(--bg);
  display: flex;
  align-items: stretch;
  justify-content: center;
}

/* go-page: flex column that fills the full viewport height */
.go-page {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 580px;
  height: 100%;
  overflow: hidden; /* prevent content from escaping the page box */
  animation: overlayEntrance 0.35s cubic-bezier(0.34, 1.4, 0.64, 1) both;
}

/* Sticky header: GAME OVER title + stats grid + new-HS banner */
.go-header {
  flex-shrink: 0;
  padding: 32px 28px 24px;
  background: var(--bg2);
  border-bottom: 1px solid rgba(239, 68, 68, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}

.go-title {
  font-size: 3rem;
  color: var(--danger);
  text-shadow: 0 0 30px rgba(239, 68, 68, 0.7), 0 0 8px rgba(239, 68, 68, 0.4);
  letter-spacing: 0.35em;
  line-height: 1;
}

/* Scrollable body: name-entry form and/or leaderboard */
.go-body {
  flex: 1;
  min-height: 0; /* CRITICAL: allow flex item to shrink so overflow-y:auto works */
  overflow-y: auto;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

@keyframes overlayEntrance {
  from { opacity: 0; transform: scale(0.88) translateY(20px); }
  to   { opacity: 1; transform: scale(1)    translateY(0);    }
}

.overlay-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 28px 32px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
  width: 85%;
}

.overlay-box h2 {
  font-size: 1.8rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
}

.overlay-box .btn {
  min-width: 160px;
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* ── Game Over stat cards (3-column grid) ─────────────────── */
.go-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  background: transparent;
  border: none;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}

.go-stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.go-stat-label {
  font-size: 0.54rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.go-stat-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent2);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.go-stat-card.stat-score .go-stat-value {
  color: var(--gold);
  font-size: 1.45rem;
}

.new-record {
  color: var(--gold);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 8px 16px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: 8px;
  width: 100%;
  animation: pulse 1s ease-in-out infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.75; }
  to   { opacity: 1; box-shadow: 0 0 12px rgba(245, 158, 11, 0.3); }
}

/* ── Name-entry form ──────────────────────────────────────── */
.go-name-form {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}

.go-name-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 4px;
  text-align: center;
}

.go-name-sub {
  font-size: 0.76rem;
  color: var(--text-dim);
  margin-bottom: 12px;
  text-align: center;
}

.go-name-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.go-name-input {
  flex: 1;
  min-width: 0;
  background: var(--bg2);
  border: 1.5px solid var(--accent);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  padding: 10px 12px;
  outline: none;
}

.go-name-input:focus {
  border-color: var(--accent2);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.22);
}

.go-save-btn {
  padding: 10px 16px !important;
  min-width: unset !important;
  font-size: 0.82rem !important;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Top-10 Leaderboard ───────────────────────────────────── */
.go-leaderboard {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  overflow: hidden;
}

.lb-title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
  font-weight: 700;
  text-transform: uppercase;
  text-align: center;
  padding: 9px 0 8px;
  background: rgba(168, 85, 247, 0.1);
  border-bottom: 1px solid var(--border);
}

.lb-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.lb-table thead tr {
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 1;
}

.lb-table th {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.lb-table td {
  padding: 7px 10px;
  border-bottom: 1px solid rgba(46, 46, 110, 0.35);
  vertical-align: middle;
}

.lb-table tbody tr:last-child td { border-bottom: none; }
.lb-table tbody tr:hover td { background: rgba(168, 85, 247, 0.05); }

.lb-rank  { color: var(--text-dim); font-weight: 700; width: 32px; text-align: center; }
.lb-name  { color: var(--text); max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-score { color: var(--accent2); font-weight: 800; font-variant-numeric: tabular-nums; }
.lb-level { color: var(--text-dim); text-align: center; font-size: 0.78rem; }
.lb-empty { text-align: center; color: var(--text-dim); padding: 16px; font-size: 0.84rem; }

.lb-current td        { background: rgba(168, 85, 247, 0.1); }
.lb-current .lb-name  { color: var(--accent2); font-weight: 700; }
.lb-current .lb-score { color: var(--gold); }
.lb-current .lb-rank  { color: var(--gold); }

/* ── Global Scores Screen ─────────────────────────────────── */
.global-lb-container {
  width: 100%;
  max-width: 380px;
}

.global-lb-status {
  text-align: center;
  color: var(--text-dim);
  padding: 24px 0;
  font-size: 0.88rem;
}

#screen-scores .go-leaderboard {
  width: 100%;
  max-width: 380px;
}

#screen-scores .btn {
  width: 100%;
  max-width: 380px;
  min-width: unset;
}

/* ── Game-over action buttons (sticky footer of the go-page) ── */
.go-actions {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  padding: 16px 28px calc(16px + env(safe-area-inset-bottom, 0px));
  background: var(--bg2);
  border-top: 1px solid var(--border);
}

/* Secondary actions row: MAIN MENU + GLOBAL SCORES side-by-side */
.go-actions-row {
  display: flex;
  gap: 10px;
  width: 100%;
}

.go-actions-row .btn {
  flex: 1;
  min-width: 0;
  padding: 12px 10px;
  font-size: 0.88rem;
}

.go-action-main {
  width: 100%;
  min-width: unset;
  padding: 14px 20px;
}

/* Game screen title bar */
.game-title-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0;
  user-select: none;
  flex-shrink: 0;
}

.game-logo-sm {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.3em;
  background: linear-gradient(135deg, var(--accent2), #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.game-logo-tag {
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  border-left: 1px solid var(--border);
  padding-left: 12px;
  line-height: 1;
}

/* Mute button (appears on menu and game title bar) */
.btn-mute {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 4px 8px;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.btn-mute:hover {
  background: var(--panel);
  border-color: var(--accent2);
}

/* Mute button when placed inside the side panel (below PAUSE) */
.side-panel .btn-mute {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
  padding: 5px 6px;
  cursor: pointer;
  text-align: center;
  display: block;
  transition: background 0.15s, border-color 0.15s;
}
.side-panel .btn-mute:hover {
  background: var(--border);
  border-color: var(--accent2);
}

/* Position the mute button in the top-right of the menu screen */
#screen-menu { position: relative; }
#btn-mute-menu {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 10;
}

/* Push mute to far right in title bar */
.game-title-bar .btn-mute {
  margin-left: auto;
}

/* Site Footer */
.site-footer {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: auto;
  padding: 18px 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  border-top: 1px solid var(--border);
  width: 100%;
}

.footer-copy {
  color: #94a3b8;
  line-height: 1.6;
  width: 100%;
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  justify-content: center;
  align-items: center;
}

.footer-link {
  color: var(--accent2);
  text-decoration: none;
  opacity: 0.85;
  font-weight: 500;
  transition: opacity 0.2s;
}

.footer-link:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-sep {
  color: var(--border);
}

/* Compact variant for the game screen — same size as standard footer */
.site-footer-game {
  font-size: 0.78rem;
  padding: 18px 20px 14px;
  gap: 8px;
}

@media (max-width: 600px) {
  .site-footer-game {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
    font-size: 0.6rem;
    padding: 4px 12px;
    padding-bottom: calc(4px + env(safe-area-inset-bottom, 0px));
    gap: 2px;
    line-height: 1.4;
    border-radius: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
  }
  .site-footer-game .footer-copy {
    font-size: 0.6rem;
    opacity: 0.8;
  }
  .site-footer-game .footer-nav {
    font-size: 0.55rem;
    gap: 3px 6px;
  }
}

/* ======================================================
   RESPONSIVE LAYOUT
   ====================================================== */

/* Tablet / Small desktop */
@media (max-width: 700px) {
  :root { --cell: 26px; }

  .game-layout {
    gap: 6px;
  }

  .side-panel {
    width: 100px;
    gap: 5px;
  }

  .panel-value {
    font-size: 1.1rem;
  }

  #board {
    width: 260px;
    height: 520px;
  }

  #next-canvas {
    width: 80px;
    height: 80px;
  }
}

/* Mobile portrait */
@media (max-width: 500px) {
  :root { --cell: 24px; }

  #screen-game {
    justify-content: center;
    padding: calc(env(safe-area-inset-top, 0px) + 6px) 6px calc(env(safe-area-inset-bottom, 0px) + 56px);
    overflow: hidden;
  }

  .game-title-bar {
    gap: 6px;
  }

  .game-logo-sm {
    font-size: 1rem;
  }

  .game-logo-tag {
    font-size: 0.5rem;
    padding-left: 8px;
  }

  .game-layout {
    gap: 4px;
  }

  .side-panel {
    width: 76px;
    gap: 4px;
  }

  .panel-value {
    font-size: 0.9rem;
  }

  .panel-value-sm {
    font-size: 0.76rem;
  }

  .panel-block {
    padding: 5px 4px;
  }

  .panel-label {
    font-size: 0.48rem;
  }

  #board {
    /* Fill available space: width-constrained OR height-constrained, whichever is smaller */
    width:  min(calc(100vw - 96px), calc((100vh - 118px) / 2), 300px);
    height: calc(2 * min(calc(100vw - 96px), calc((100vh - 118px) / 2), 300px));
  }

  #next-canvas {
    width: 66px;
    height: 66px;
  }

  /* ── Full-page game-over on mobile ─────────────────────── */
  .go-header         { padding: 20px 16px 16px; gap: 12px; }
  .go-title          { font-size: 2rem; letter-spacing: 0.22em; }
  .go-body           { padding: 16px; gap: 14px; }
  .go-stat-card      { padding: 7px 4px; gap: 3px; }
  .go-stat-value     { font-size: 0.95rem; }
  .go-stat-card.stat-score .go-stat-value { font-size: 1.05rem; }
  .go-stat-label     { font-size: 0.48rem; }
  .new-record        { font-size: 0.72rem; padding: 5px 10px; }
  .go-name-form      { padding: 10px 12px; }
  .go-name-label     { font-size: 0.8rem; margin-bottom: 2px; }
  .go-name-sub       { font-size: 0.7rem; margin-bottom: 8px; }
  .go-name-input     { padding: 7px 10px; font-size: 0.82rem; }
  .go-name-row       { gap: 6px; }
  .go-save-btn       { padding: 7px 10px !important; font-size: 0.74rem !important; }
  .lb-title          { padding: 6px 0 5px; font-size: 0.62rem; }
  .lb-table          { font-size: 0.74rem; }
  .lb-table td, .lb-table th { padding: 4px 6px; }
  .go-actions        { gap: 8px; padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px)); }
  .go-actions-row    { gap: 6px; }
  .go-actions-row .btn { padding: 10px 8px; font-size: 0.8rem; }
  .go-action-main    { padding: 11px 14px; font-size: 0.85rem; }

  .btn-sm {
    font-size: 0.62rem;
    padding: 5px 6px;
  }
}

/* Very small phones (up to 380px wide) */
@media (max-width: 380px) {
  #screen-game {
    justify-content: center;
    padding: calc(env(safe-area-inset-top, 0px) + 4px) 4px calc(env(safe-area-inset-bottom, 0px) + 52px);
  }

  .side-panel {
    width: 62px;
    gap: 3px;
  }

  .panel-block {
    padding: 4px 3px;
  }

  .panel-value {
    font-size: 0.82rem;
  }

  .panel-label {
    font-size: 0.44rem;
  }

  #next-canvas {
    width: 52px;
    height: 52px;
  }
}

/* Landscape mobile */
@media (max-height: 500px) and (orientation: landscape) {
  :root { --cell: 16px; }

  #screen-game {
    justify-content: center;
    padding: 2px 6px calc(env(safe-area-inset-bottom, 0px) + 2px);
    overflow: hidden;
  }

  .game-title-bar {
    gap: 6px;
  }

  .game-logo-sm {
    font-size: 0.9rem;
  }

  .game-logo-tag {
    display: none;
  }

  .game-layout {
    gap: 4px;
  }

  .side-panel {
    width: 56px;
    gap: 3px;
  }

  .panel-block {
    padding: 3px 3px;
  }

  .panel-value {
    font-size: 0.72rem;
  }

  .panel-label {
    font-size: 0.4rem;
    margin-bottom: 1px;
  }

  #board {
    width: 160px;
    height: 320px;
  }

  #next-canvas {
    width: 46px;
    height: 46px;
  }
}

/* Landscape mobile: compact game-over layout to fit within short viewport */
@media (max-height: 500px) and (orientation: landscape) {
  .go-header {
    padding: 8px 20px;
    gap: 8px;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }

  .go-title    { font-size: 1.4rem; letter-spacing: 0.2em; }

  .go-stats {
    gap: 6px;
  }

  .go-stat-card   { padding: 4px 8px; gap: 2px; }
  .go-stat-value  { font-size: 0.85rem; }
  .go-stat-label  { font-size: 0.44rem; }

  .go-body { padding: 10px 20px; gap: 10px; }

  .go-actions {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 20px calc(10px + env(safe-area-inset-bottom, 0px));
    align-items: center;
  }

  .go-action-main { flex: 2; min-width: 140px; padding: 9px 14px; font-size: 0.85rem; }

  .go-actions-row { flex: 3; min-width: 0; gap: 8px; }
  .go-actions-row .btn { padding: 9px 10px; font-size: 0.8rem; }

  .go-name-input  { padding: 7px 10px; font-size: 0.82rem; }
  .lb-table       { font-size: 0.74rem; }
  .lb-table td, .lb-table th { padding: 4px 8px; }
}

/* ======================================================
   SCROLLBAR
   ====================================================== */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }