/* ============================================================ FALLING BLOCKS — Accessible Stylesheet CSS custom properties drive all theming. Theme order of precedence: [data-theme="light"] or [data-theme="dark"] on overrides the prefers-color-scheme media query. "system" (default) defers entirely to the media query. ============================================================ */ /* ─── Reset & base ───────────────────────────────────────── */ *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } /* ─── Design tokens — light theme (default) ──────────────── */ :root { /* Surfaces */ --color-bg-page: #eef0f5; --color-bg-surface: #ffffff; --color-bg-surface-alt: #f4f6fb; --color-bg-game-board: #f7f9ff; --color-bg-overlay: rgba(0, 0, 0, 0.65); /* Text */ --color-text-primary: #1a1a2e; --color-text-secondary: #4a4a6a; --color-text-muted: #7a7a9a; --color-text-on-dark: #ffffff; /* Borders */ --color-border: #d0d4e8; --color-border-focus: #0066cc; --color-border-strong: #9095b0; /* Buttons */ --color-btn-primary-bg: #0066cc; --color-btn-primary-text: #ffffff; --color-btn-primary-hover:#0052a3; --color-btn-secondary-bg: #e8ebf5; --color-btn-secondary-text: #1a1a2e; --color-btn-secondary-hover:#d0d4e8; --color-btn-disabled-bg: #c8ccd8; --color-btn-disabled-text: #7a7a9a; /* Tetromino colors */ --color-piece-I: #000000; --color-piece-O: #000000; --color-piece-T: #000000; --color-piece-S: #000000; --color-piece-Z: #000000; --color-piece-J: #000000; --color-piece-L: #000000; --color-piece-ghost-outline: #007aff; --color-grid-line: rgba(26, 26, 46, 0.08); --color-cell-border: rgba(0, 0, 0, 0.25); /* Settings modal */ --color-modal-bg: #ffffff; --color-modal-border: #d0d4e8; /* Overlay text */ --color-overlay-title: #ffffff; --color-overlay-subtitle: rgba(255,255,255,0.8); /* Typography */ --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; --font-size-sm: 0.8125rem; /* 13px */ --font-size-base: 1rem; /* 16px */ --font-size-lg: 1.125rem; /* 18px */ --font-size-xl: 1.375rem; /* 22px */ --font-size-2xl: 1.75rem; /* 28px */ --font-size-3xl: 2.25rem; /* 36px */ /* Spacing */ --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; /* Radii */ --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; /* Shadows */ --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06); --shadow-md: 0 4px 12px rgba(0,0,0,0.10), 0 2px 4px rgba(0,0,0,0.08); --shadow-lg: 0 10px 30px rgba(0,0,0,0.15); /* Transitions */ --transition-fast: 120ms ease; --transition-base: 200ms ease; } /* ─── Dark theme ──────────────────────────────────────────── */ /* Applied when OS is dark (system mode) */ @media (prefers-color-scheme: dark) { :root { --color-bg-page: #0f0f1a; --color-bg-surface: #1a1a2e; --color-bg-surface-alt: #22223a; --color-bg-game-board: #0d0d1a; --color-bg-overlay: rgba(0, 0, 0, 0.75); --color-text-primary: #e8e8f5; --color-text-secondary: #a0a0c0; --color-text-muted: #6a6a8a; --color-border: #2e2e4a; --color-border-focus: #4da6ff; --color-border-strong: #4a4a6a; --color-btn-primary-bg: #4da6ff; --color-btn-primary-text: #0f0f1a; --color-btn-primary-hover:#70b8ff; --color-btn-secondary-bg: #2e2e4a; --color-btn-secondary-text: #e8e8f5; --color-btn-secondary-hover:#3a3a5a; --color-btn-disabled-bg: #1e1e32; --color-btn-disabled-text: #4a4a6a; --color-modal-bg: #1a1a2e; --color-modal-border: #2e2e4a; --color-piece-I: #ffffff; --color-piece-O: #ffffff; --color-piece-T: #ffffff; --color-piece-S: #ffffff; --color-piece-Z: #ffffff; --color-piece-J: #ffffff; --color-piece-L: #ffffff; --color-piece-ghost-outline: #ff3b30; --color-grid-line: rgba(255, 255, 255, 0.06); } } /* Explicit light override (beats media query) */ [data-theme="light"] { --color-bg-page: #eef0f5; --color-bg-surface: #ffffff; --color-bg-surface-alt: #f4f6fb; --color-bg-game-board: #f7f9ff; --color-bg-overlay: rgba(0, 0, 0, 0.65); --color-text-primary: #1a1a2e; --color-text-secondary: #4a4a6a; --color-text-muted: #7a7a9a; --color-border: #d0d4e8; --color-border-focus: #0066cc; --color-border-strong: #9095b0; --color-btn-primary-bg: #0066cc; --color-btn-primary-text: #ffffff; --color-btn-primary-hover:#0052a3; --color-btn-secondary-bg: #e8ebf5; --color-btn-secondary-text: #1a1a2e; --color-btn-secondary-hover:#d0d4e8; --color-btn-disabled-bg: #c8ccd8; --color-btn-disabled-text: #7a7a9a; --color-modal-bg: #ffffff; --color-modal-border: #d0d4e8; --color-piece-I: #000000; --color-piece-O: #000000; --color-piece-T: #000000; --color-piece-S: #000000; --color-piece-Z: #000000; --color-piece-J: #000000; --color-piece-L: #000000; --color-piece-ghost-outline: #007aff; --color-grid-line: rgba(26, 26, 46, 0.08); } /* Explicit dark override (beats media query) */ [data-theme="dark"] { --color-bg-page: #0f0f1a; --color-bg-surface: #1a1a2e; --color-bg-surface-alt: #22223a; --color-bg-game-board: #0d0d1a; --color-bg-overlay: rgba(0, 0, 0, 0.75); --color-text-primary: #e8e8f5; --color-text-secondary: #a0a0c0; --color-text-muted: #6a6a8a; --color-border: #2e2e4a; --color-border-focus: #4da6ff; --color-border-strong: #4a4a6a; --color-btn-primary-bg: #4da6ff; --color-btn-primary-text: #0f0f1a; --color-btn-primary-hover:#70b8ff; --color-btn-secondary-bg: #2e2e4a; --color-btn-secondary-text: #e8e8f5; --color-btn-secondary-hover:#3a3a5a; --color-btn-disabled-bg: #1e1e32; --color-btn-disabled-text: #4a4a6a; --color-modal-bg: #1a1a2e; --color-modal-border: #2e2e4a; --color-piece-I: #ffffff; --color-piece-O: #ffffff; --color-piece-T: #ffffff; --color-piece-S: #ffffff; --color-piece-Z: #ffffff; --color-piece-J: #ffffff; --color-piece-L: #ffffff; --color-piece-ghost-outline: #ff3b30; --color-grid-line: rgba(255, 255, 255, 0.06); } /* ─── High contrast mode ──────────────────────────────────── */ @media (prefers-contrast: more) { :root, [data-theme="light"], [data-theme="dark"] { --color-border-focus: #0000ff; --color-border: #000000; --color-text-primary: #000000; --color-text-secondary: #000000; --color-btn-primary-bg: #000080; --color-btn-primary-text: #ffffff; --color-btn-secondary-bg: #ffffff; --color-btn-secondary-text: #000000; --color-cell-border: rgba(0, 0, 0, 0.6); --color-piece-ghost-outline: #0000ff; } } @media (prefers-color-scheme: dark) and (prefers-contrast: more) { :root { --color-border-focus: #ffff00; --color-border: #ffffff; --color-text-primary: #ffffff; --color-text-secondary: #ffffff; --color-btn-primary-bg: #ffff00; --color-btn-primary-text: #000000; --color-btn-secondary-bg: #000000; --color-btn-secondary-text: #ffffff; } } /* [data-theme="dark"] high contrast handled via media query above */ @media (prefers-contrast: more) { [data-theme="dark"] { --color-border-focus: #ffff00; --color-border: #ffffff; --color-text-primary: #ffffff; --color-text-secondary: #ffffff; --color-piece-ghost-outline: #ff3b30; } } /* ─── Reduced motion ──────────────────────────────────────── */ @media (prefers-reduced-motion: reduce) { :root[data-motion="system"] *, :root[data-motion="system"] *::before, :root[data-motion="system"] *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } } [data-motion="instant"] *, [data-motion="instant"] *::before, [data-motion="instant"] *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } /* ─── Base styles ─────────────────────────────────────────── */ html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; } body { font-family: var(--font-family); font-size: var(--font-size-base); color: var(--color-text-primary); background-color: var(--color-bg-page); min-height: 100vh; display: flex; flex-direction: column; line-height: 1.5; transition: background-color var(--transition-base), color var(--transition-base); } .page-footer { display: flex; justify-content: center; padding: 0 0 var(--space-4); } .page-footer-link { color: var(--color-text-muted); font-size: var(--font-size-sm); text-decoration: none; } .page-footer-link:hover, .page-footer-link:focus-visible { color: var(--color-text-secondary); text-decoration: underline; } [hidden] { display: none !important; } body.modal-open { overflow: hidden; overscroll-behavior: none; } /* ─── Accessibility utilities ─────────────────────────────── */ .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; } .skip-link { position: absolute; top: -100%; left: var(--space-4); z-index: 9999; padding: var(--space-3) var(--space-5); background: var(--color-btn-primary-bg); color: var(--color-btn-primary-text); font-size: var(--font-size-base); font-weight: 600; border-radius: var(--radius-md); text-decoration: none; transition: top var(--transition-fast); } .skip-link:focus { top: var(--space-4); outline: 3px solid var(--color-border-focus); outline-offset: 2px; } /* Universal focus ring */ :focus-visible { outline: 3px solid var(--color-border-focus); outline-offset: 2px; } /* Remove default outline when :focus-visible is supported */ :focus:not(:focus-visible) { outline: none; } /* ─── Header ──────────────────────────────────────────────── */ .site-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4); background: var(--color-bg-surface); border-bottom: 1px solid var(--color-border); border-left: 1px solid var(--color-border); border-right: 1px solid var(--color-border); border-bottom-left-radius: var(--radius-lg); border-bottom-right-radius: var(--radius-lg); box-shadow: var(--shadow-sm); max-width: 960px; margin: 0 auto; width: calc(100% - 2 * var(--space-4)); transition: background-color var(--transition-base), border-color var(--transition-base), width var(--transition-base); } .site-title { font-size: var(--font-size-2xl); font-weight: 800; letter-spacing: -0.02em; background: linear-gradient(135deg, var(--color-piece-I), var(--color-piece-T)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; } /* ─── Buttons ─────────────────────────────────────────────── */ .btn { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-5); font-family: var(--font-family); font-size: var(--font-size-base); font-weight: 600; line-height: 1.5; border: 2px solid transparent; border-radius: var(--radius-md); cursor: pointer; text-decoration: none; transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast); white-space: nowrap; min-height: 44px; /* WCAG minimum touch target */ min-width: 44px; } .btn-primary { background: var(--color-btn-primary-bg); color: var(--color-btn-primary-text); } .btn-primary:hover:not(:disabled) { background: var(--color-btn-primary-hover); } .btn-secondary { background: var(--color-btn-secondary-bg); color: var(--color-btn-secondary-text); } .btn-secondary:hover:not(:disabled) { background: var(--color-btn-secondary-hover); } .btn:disabled { background: var(--color-btn-disabled-bg); color: var(--color-btn-disabled-text); cursor: not-allowed; opacity: 0.7; } .btn-icon { background: transparent; color: var(--color-text-secondary); border-color: var(--color-border); padding: var(--space-2) var(--space-3); } .btn-icon:hover { background: var(--color-bg-surface-alt); color: var(--color-text-primary); border-color: var(--color-border-strong); } .btn-icon-only { width: 44px; height: 44px; padding: 0; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; } .btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--font-size-sm); min-height: 36px; } .btn-large { padding: var(--space-3) var(--space-8); font-size: var(--font-size-lg); min-height: 52px; } /* ─── Settings overlay ────────────────────────────────────── */ .settings-overlay { position: fixed; inset: 0; background: var(--color-bg-overlay); z-index: 200; backdrop-filter: blur(8px); animation: fade-in var(--transition-base); } /* ─── Settings modal ──────────────────────────────────────── */ #settings-modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 201; width: min(500px, calc(100vw - 2rem)); max-height: calc(100dvh - 4rem); background: var(--color-modal-bg); border: 1px solid var(--color-modal-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.05); animation: slide-up var(--transition-base); display: flex; flex-direction: column; overflow: hidden; /* Header and footer are fixed, body scrolls */ touch-action: auto; } .settings-container { display: flex; flex-direction: column; height: 100%; min-height: 0; } .settings-header { padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; background: var(--color-bg-surface-alt); } .settings-header h2 { font-size: var(--font-size-xl); font-weight: 800; color: var(--color-text-primary); display: flex; align-items: center; gap: var(--space-3); margin: 0; } .settings-header h2 svg { color: var(--color-btn-primary-bg); } .btn-close-icon { background: transparent; border: none; color: var(--color-text-muted); cursor: pointer; padding: var(--space-2); border-radius: var(--radius-md); transition: all var(--transition-fast); display: flex; align-items: center; justify-content: center; min-width: 40px; min-height: 40px; } .btn-close-icon:hover { background: var(--color-bg-surface-alt); color: var(--color-text-primary); transform: rotate(90deg); } .btn-close-icon:focus-visible { background: var(--color-bg-surface-alt); outline: 2px solid var(--color-border-focus); } .settings-body { padding: var(--space-6); overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; flex: 1; min-height: 0; display: flex; flex-direction: column; gap: var(--space-8); } .settings-section { display: flex; flex-direction: column; gap: var(--space-5); } .settings-section-title { font-size: var(--font-size-sm); font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-muted); border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-2); } .settings-group { display: flex; flex-direction: column; gap: var(--space-3); } .settings-group-label { font-weight: 600; color: var(--color-text-primary); } /* Segmented Control */ .segmented-control { display: flex; background: var(--color-bg-surface-alt); padding: 4px; border-radius: var(--radius-md); border: 1px solid var(--color-border); } .segmented-option { flex: 1; position: relative; cursor: pointer; } .segmented-option input { position: absolute; opacity: 0; width: 0; height: 0; } .segmented-label { display: block; text-align: center; padding: var(--space-2) var(--space-1); font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text-secondary); border-radius: calc(var(--radius-md) - 2px); transition: all var(--transition-fast); } .segmented-option input:checked + .segmented-label { background: var(--color-bg-surface); color: var(--color-text-primary); box-shadow: var(--shadow-sm); } /* Range Control */ .range-control { display: flex; align-items: center; gap: var(--space-4); background: var(--color-bg-surface-alt); padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); border: 1px solid var(--color-border); } .range-control input[type="range"] { flex: 1; height: 6px; background: var(--color-border); border-radius: var(--radius-sm); outline: none; cursor: pointer; -webkit-appearance: none; appearance: none; } .range-control input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 20px; height: 20px; background: var(--color-btn-primary-bg); border-radius: 50%; border: 4px solid var(--color-bg-surface); box-shadow: var(--shadow-sm); transition: transform var(--transition-fast); } .range-control input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.1); background: var(--color-btn-primary-hover); } .range-value { min-width: 44px; font-weight: 700; color: var(--color-text-primary); font-variant-numeric: tabular-nums; text-align: right; } .radio-hint { font-size: 0.75rem; color: var(--color-text-muted); margin-top: calc(-1 * var(--space-1)); line-height: 1.4; } .color-pickers-grid { display: flex; flex-direction: column; gap: var(--space-4); } .color-picker-item { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-2); background: var(--color-bg-surface-alt); border-radius: var(--radius-md); border: 1px solid var(--color-border); } .color-picker-item label { display: flex; align-items: center; gap: var(--space-3); font-size: var(--font-size-sm); font-weight: 600; color: var(--color-text-primary); cursor: pointer; flex: 1; } .color-picker-item label .piece-swatch { border-radius: var(--radius-sm); border: 1px solid var(--color-border-strong); box-shadow: var(--shadow-sm); } .color-picker-item input[type="color"] { -webkit-appearance: none; appearance: none; border: none; width: 60px; height: 36px; cursor: pointer; background: none; padding: 0; flex-shrink: 0; } .color-picker-item input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; } .color-picker-item input[type="color"]::-webkit-color-swatch { border: 2px solid var(--color-border); border-radius: var(--radius-md); transition: transform var(--transition-fast); } .color-picker-item input[type="color"]:hover::-webkit-color-swatch { transform: scale(1.05); border-color: var(--color-border-strong); } .reset-btn { align-self: center; margin-top: var(--space-2); } .settings-footer { padding: var(--space-4) var(--space-6); border-top: 1px solid var(--color-border); background: var(--color-bg-surface-alt); } .btn-full { width: 100%; justify-content: center; } .btn-sm { min-height: 36px; padding: var(--space-1) var(--space-3); font-size: var(--font-size-sm); } /* ─── Main layout ─────────────────────────────────────────── */ .game-layout { display: grid; grid-template-columns: 180px auto 180px; gap: var(--space-4); align-items: start; justify-content: center; padding: var(--space-6) var(--space-4); flex: 1; max-width: 960px; margin: 0 auto; width: 100%; } /* ─── Sidebars ────────────────────────────────────────────── */ .sidebar { display: flex; flex-direction: column; gap: var(--space-4); } .info-section { background: var(--color-bg-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-4); box-shadow: var(--shadow-sm); transition: background-color var(--transition-base), border-color var(--transition-base); } .info-heading { font-size: var(--font-size-sm); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); margin-bottom: var(--space-2); } .info-subheading { font-size: var(--font-size-sm); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); margin-top: var(--space-4); margin-bottom: var(--space-2); } .info-value { font-size: var(--font-size-2xl); font-weight: 800; font-variant-numeric: tabular-nums; color: var(--color-text-primary); line-height: 1.2; } /* ─── Controls list ───────────────────────────────────────── */ .controls-list { display: flex; flex-direction: column; gap: var(--space-2); } .control-row { display: flex; align-items: baseline; gap: var(--space-2); font-size: var(--font-size-sm); } .control-row dt { display: flex; gap: var(--space-1); flex-shrink: 0; min-width: 60px; } .control-row dd { color: var(--color-text-secondary); } kbd { display: inline-block; padding: 1px 5px; font-family: var(--font-family); font-size: 0.75rem; font-weight: 600; background: var(--color-bg-surface-alt); border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); box-shadow: 0 1px 0 var(--color-border-strong); color: var(--color-text-primary); white-space: nowrap; } /* ─── Piece legend ────────────────────────────────────────── */ .piece-legend { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); } .piece-legend-item { display: flex; align-items: center; gap: var(--space-2); font-size: var(--font-size-sm); color: var(--color-text-secondary); } .piece-swatch { border-radius: 2px; flex-shrink: 0; } /* ─── Game section ────────────────────────────────────────── */ .game-section { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); } .canvas-wrapper { position: relative; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-lg), 0 0 0 2px var(--color-border); } #game-canvas { display: block; background: var(--color-bg-game-board); transition: background-color var(--transition-base); } /* ─── Game overlays ───────────────────────────────────────── */ .game-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--space-4); background: var(--color-bg-overlay); backdrop-filter: blur(3px); animation: fade-in var(--transition-base); } .game-overlay[hidden] { display: none; } .overlay-title { font-size: var(--font-size-3xl); font-weight: 900; color: var(--color-overlay-title); letter-spacing: -0.02em; text-shadow: 0 2px 8px rgba(0,0,0,0.4); } .overlay-subtitle { font-size: var(--font-size-base); color: var(--color-overlay-subtitle); text-align: center; } .overlay-subtitle kbd { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.3); color: #fff; } .overlay-score { font-size: var(--font-size-xl); color: var(--color-overlay-subtitle); font-variant-numeric: tabular-nums; font-weight: 600; } /* ─── Game controls row ───────────────────────────────────── */ .game-controls { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; width: 100%; } .game-controls-mobile { display: none; } /* ─── Next piece + mobile controls wrapper ────────────────── */ .next-piece-controls { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); } /* ─── Next piece canvas ───────────────────────────────────── */ #next-canvas { display: block; background: var(--color-bg-game-board); border-radius: 50%; margin-top: var(--space-2); width: 100%; max-width: 120px; height: auto; aspect-ratio: 1; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08), inset 0 12px 24px rgba(255,255,255,0.05), 0 10px 24px rgba(0,0,0,0.28); transition: background-color var(--transition-base), box-shadow var(--transition-base); } /* ─── Animations ──────────────────────────────────────────── */ @keyframes fade-in { from { opacity: 0; } to { opacity: 1; } } @keyframes slide-up { from { opacity: 0; transform: translate(-50%, calc(-50% + 20px)); } to { opacity: 1; transform: translate(-50%, -50%); } } @keyframes line-flash { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } } /* ─── Update banner ──────────────────────────────────────── */ .update-banner { position: fixed; top: 0; left: 0; right: 0; z-index: 300; display: flex; align-items: center; justify-content: center; gap: var(--space-4); flex-wrap: wrap; background: var(--color-bg-surface); border-bottom: 1px solid var(--color-border); padding: var(--space-3) var(--space-4); box-shadow: var(--shadow-md); font-size: var(--font-size-sm); } .update-banner[hidden] { display: none; } .update-banner-actions { display: flex; gap: var(--space-2); } .footer-version { font-size: var(--font-size-sm); color: var(--color-text-muted); margin-left: var(--space-4); } /* ─── Responsive: narrow screens ─────────────────────────── */ @media (max-width: 700px) { html { scroll-snap-type: y mandatory; } #settings-modal { top: 1rem; right: 1rem; bottom: 1rem; left: 1rem; transform: none; width: auto; max-height: none; height: auto; } .game-layout { grid-template-columns: 1fr; grid-template-rows: auto; padding: var(--space-3) var(--space-3); } .sidebar-left { order: 3; } .game-section { order: 1; scroll-snap-align: start; } .sidebar-right { order: 2; display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-3); } #section-next { order: -1; grid-column: 1 / -1; display: flex; flex-direction: row; align-items: center; justify-content: center; gap: var(--space-4); scroll-snap-align: start; } .next-piece-controls { flex-direction: column; align-items: center; flex: 0.25; } #next-canvas { width: 64px !important; height: 64px !important; flex: none; max-width: none; margin-top: 0; } .info-heading { margin-bottom: var(--space-1); } .game-controls-desktop { display: none; } .game-controls-mobile { display: flex; flex-direction: column; flex: 0 0 33.33%; width: auto; justify-content: center; align-items: center; } .site-header { width: 100%; max-width: none; margin: 0; border-left: none; border-right: none; border-radius: 0; padding: var(--space-3) var(--space-3); scroll-snap-align: start; } .site-title { font-size: var(--font-size-xl); } .footer-version { scroll-snap-align: start; } } @media (max-width: 380px) { #game-canvas { width: 250px !important; height: 500px !important; } } /* ─── Print ───────────────────────────────────────────────── */ @media print { .site-header, .game-controls, #settings-modal, .settings-overlay, .skip-link { display: none; } }