/**

 * Emoji Drop - Mobile-First Game Styles

 *

 * @file        style.css

 * @description Complete visual design: layout, animations, effects, responsive, and mobile-first UX.

 * @author      Mike Fairbrother <mike@fairbrother.me>

 * @copyright   2024-2026 Mike Fairbrother. All rights reserved.

 * @license     PROPRIETARY - No rights to copy, modify, distribute, or reuse

 *              any part of this code without explicit written permission from the author.

 *

 * NOTICE: This source code is the intellectual property of Mike Fairbrother.

 * Unauthorized copying, modification, distribution, or use of this file,

 * via any medium, is strictly prohibited.

 */



:root {

    --bg-dark: #0f0c29;

    --bg-mid: #1a1640;

    --bg-board: rgba(255, 255, 255, 0.04);

    --text-primary: #fff;

    --text-secondary: rgba(255, 255, 255, 0.6);

    --accent: #ffd93d;

    --accent-glow: rgba(255, 217, 61, 0.4);

    --danger: #ff4757;

    --danger-glow: rgba(255, 71, 87, 0.5);

    --success: #2ed573;

    --fire-a: #ff6b6b;

    --fire-b: #ff9f43;

    --cell-bg: rgba(255, 255, 255, 0.06);

    --cell-selected: rgba(255, 217, 61, 0.25);

    --cell-radius: 10px;

    --transition-fast: 150ms;

    --transition-normal: 300ms;

}



*, *::before, *::after {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

    -webkit-tap-highlight-color: transparent;

}



html, body {

    width: 100%;

    height: 100%;

    overflow: hidden;

    background: var(--bg-dark);

    color: var(--text-primary);

    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    touch-action: manipulation;

    user-select: none;

    -webkit-user-select: none;

}



/* ---- App container ---- */

#app {

    position: relative;

    width: 100%;

    max-width: 420px;

    height: 100vh;

    height: 100dvh;

    margin: 0 auto;

    overflow: hidden;

    background: linear-gradient(170deg, #1a1640 0%, #0f0c29 40%, #1e1245 100%);

}



/* ---- Screen system ---- */

.screen {

    position: absolute;

    inset: 0;

    display: flex;

    flex-direction: column;

    opacity: 0;

    pointer-events: none;

    transition: opacity 0.3s ease;

    z-index: 1;

}

.screen.active {

    opacity: 1;

    pointer-events: auto;

    z-index: 10;

}

.screen-content {

    flex: 1;

    display: flex;

    flex-direction: column;

    align-items: center;

    justify-content: safe center;

    padding: 40px 24px;

    text-align: center;

    overflow-y: auto;

}



/* ---- Menu Screen ---- */

.game-logo {

    display: flex;

    gap: 8px;

    margin-bottom: 16px;

}

.logo-emoji {

    font-size: 48px;

    animation: logo-bounce 2s ease-in-out infinite;

}

.logo-emoji:nth-child(2) { animation-delay: 0.15s; }

.logo-emoji:nth-child(3) { animation-delay: 0.3s; }



@keyframes logo-bounce {

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

    50% { transform: translateY(-12px); }

}



.game-title {

    font-size: 52px;

    font-weight: 800;

    letter-spacing: -1px;

    line-height: 1;

    background: linear-gradient(135deg, #fff 0%, #ffd93d 50%, #ff6b6b 100%);

    -webkit-background-clip: text;

    -webkit-text-fill-color: transparent;

    background-clip: text;

    margin-bottom: 8px;

}

.game-subtitle {

    font-size: 16px;

    color: var(--text-secondary);

    margin-bottom: 24px;

}

.menu-best {

    font-size: 18px;

    color: var(--accent);

    margin-bottom: 16px;

    font-weight: 600;

}



/* ---- Difficulty Selector ---- */

.difficulty-selector {

    display: flex;

    align-items: center;

    gap: 12px;

    margin-bottom: 20px;

}

.diff-arrow {

    width: 36px;

    height: 36px;

    border: none;

    border-radius: 10px;

    background: rgba(255, 255, 255, 0.08);

    color: var(--text-secondary);

    font-size: 22px;

    font-weight: 700;

    cursor: pointer;

    display: flex;

    align-items: center;

    justify-content: center;

    transition: background var(--transition-fast);

    line-height: 1;

}

.diff-arrow:active { background: rgba(255, 255, 255, 0.15); }

.diff-label {

    font-size: 16px;

    font-weight: 700;

    color: var(--accent);

    min-width: 80px;

    text-align: center;

    text-transform: uppercase;

    letter-spacing: 1px;

}



/* ---- Settings Row ---- */

.settings-row {

    display: flex;

    gap: 12px;

    margin-top: 16px;

    align-items: center;

    justify-content: center;

}

.pause-settings {

    margin-top: 20px;

}



/* ---- Footer ---- */

.game-footer {

    margin-top: 16px;

    font-size: 11px;

    color: rgba(255, 255, 255, 0.35);

    letter-spacing: 0.5px;

    font-weight: 500;

    flex-shrink: 0;

}

.game-footer a {

    color: inherit;

    text-decoration: none;

}

.game-footer a:hover {

    text-decoration: underline;

}



/* ---- Buttons ---- */

.btn {

    display: block;

    width: 220px;

    padding: 16px 32px;

    border: none;

    border-radius: 16px;

    font-size: 20px;

    font-weight: 700;

    cursor: pointer;

    transition: transform var(--transition-fast), box-shadow var(--transition-fast);

    letter-spacing: 0.5px;

}

.btn:active { transform: scale(0.95); }

.btn-primary {

    background: linear-gradient(135deg, #ffd93d, #ff9f43);

    color: #1a1640;

    box-shadow: 0 4px 20px rgba(255, 217, 61, 0.3);

}

.btn-primary:active { box-shadow: 0 2px 10px rgba(255, 217, 61, 0.2); }

.btn-secondary {

    background: rgba(255, 255, 255, 0.1);

    color: var(--text-secondary);

    margin-top: 12px;

    font-size: 16px;

    padding: 12px 32px;

}



.icon-btn {

    width: 36px;

    height: 36px;

    border: none;

    border-radius: 10px;

    background: rgba(255, 255, 255, 0.08);

    color: var(--text-secondary);

    font-size: 16px;

    cursor: pointer;

    display: flex;

    align-items: center;

    justify-content: center;

    transition: background var(--transition-fast);

    flex-shrink: 0;

}

.icon-btn:active { background: rgba(255, 255, 255, 0.15); }



/* Smaller toggle buttons for game header */

.icon-btn-sm {

    width: 30px;

    height: 30px;

    font-size: 13px;

    border-radius: 8px;

}



/* ---- Game Header ---- */

#screen-game { display: flex; flex-direction: column; }



#game-header {

    display: flex;

    align-items: center;

    padding: 10px 8px 6px;

    gap: 6px;

    min-height: 52px;

}

.stat {

    display: flex;

    flex-direction: column;

    min-width: 0;

}

.stat-right { align-items: flex-end; }

.stat-label {

    font-size: 10px;

    color: var(--text-secondary);

    text-transform: uppercase;

    letter-spacing: 1px;

    font-weight: 600;

}

.stat-value {

    font-size: 22px;

    font-weight: 800;

    font-variant-numeric: tabular-nums;

    line-height: 1.1;

}



.header-center {

    flex: 1;

    display: flex;

    align-items: center;

    justify-content: center;

    min-width: 40px;

}



#combo-display {

    opacity: 0;

    transition: opacity 0.2s;

    text-align: center;

}

.combo-value {

    font-size: 20px;

    font-weight: 800;

    color: var(--accent);

    text-shadow: 0 0 12px var(--accent-glow);

}

.combo-pop { animation: combo-pop 0.3s ease-out; }

@keyframes combo-pop {

    0% { transform: scale(0.5); }

    60% { transform: scale(1.3); }

    100% { transform: scale(1); }

}



#selection-hint {

    font-size: 14px;

    font-weight: 700;

    color: var(--accent);

    opacity: 0;

    transition: opacity 0.15s;

    text-align: center;

}



/* ---- Level bar ---- */

#level-bar {

    position: relative;

    height: 20px;

    margin: 0 12px 4px;

    background: rgba(255, 255, 255, 0.08);

    border-radius: 10px;

    overflow: hidden;

}

#level-fill {

    position: absolute;

    inset: 0;

    width: 0%;

    background: linear-gradient(90deg, rgba(255, 217, 61, 0.25), rgba(255, 217, 61, 0.5));

    border-radius: 10px;

    transition: width 0.4s ease;

}

#level-text {

    position: absolute;

    inset: 0;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 10px;

    font-weight: 700;

    letter-spacing: 1px;

    text-transform: uppercase;

    color: rgba(255, 255, 255, 0.65);

}



/* ---- Streak bar ---- */

#streak-bar {

    position: relative;

    height: 14px;

    margin: 0 12px 6px;

    background: rgba(255, 255, 255, 0.05);

    border-radius: 7px;

    overflow: hidden;

}

#streak-fill {

    position: absolute;

    inset: 0;

    width: 0%;

    background: linear-gradient(90deg, var(--fire-a), var(--fire-b));

    border-radius: 7px;

    transition: width 0.3s ease;

}

#streak-text {

    position: absolute;

    inset: 0;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 8px;

    font-weight: 700;

    letter-spacing: 1px;

    text-transform: uppercase;

    color: rgba(255, 255, 255, 0.45);

}

#streak-bar.on-fire #streak-fill {

    background: linear-gradient(90deg, var(--fire-a), var(--accent), var(--fire-a));

    background-size: 200% 100%;

    animation: fire-sweep 0.8s linear infinite;

}

@keyframes fire-sweep {

    0% { background-position: 0% 0%; }

    100% { background-position: 200% 0%; }

}



/* ---- Board ---- */

#board-wrapper {

    flex: 1;

    display: flex;

    align-items: flex-start;

    justify-content: center;

    padding: 0 8px 8px;

    position: relative;

    overflow: hidden;

}

#board {

    position: relative;

    background: var(--bg-board);

    border-radius: 12px;

    overflow: hidden;

    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.3);

}

.grid-bg {

    position: absolute;

    top: 0;

    left: 0;

    pointer-events: none;

}



/* Danger line */

#danger-line {

    position: absolute;

    left: 8px;

    right: 8px;

    height: 2px;

    background: var(--danger);

    opacity: 0;

    z-index: 5;

    transition: opacity 0.3s;

    box-shadow: 0 0 8px var(--danger-glow), 0 0 16px var(--danger-glow);

    border-radius: 1px;

}

#board-wrapper.danger #danger-line {

    opacity: 1;

    animation: danger-pulse 1s ease-in-out infinite;

}

@keyframes danger-pulse {

    0%, 100% { opacity: 0.6; }

    50% { opacity: 1; }

}

#board-wrapper.danger #board {

    box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(255, 71, 87, 0.12);

}



/* Per-column danger */

.col-danger {

    position: absolute;

    top: 0;

    background: linear-gradient(to bottom, rgba(255, 71, 87, 0.15), transparent);

    pointer-events: none;

    z-index: 1;

    border-radius: 8px 8px 0 0;

    animation: col-warn 1.2s ease-in-out infinite;

}

.col-danger.col-critical {

    background: linear-gradient(to bottom, rgba(255, 71, 87, 0.35), transparent 70%);

    animation: col-warn 0.6s ease-in-out infinite;

}

@keyframes col-warn {

    0%, 100% { opacity: 0.5; }

    50% { opacity: 1; }

}



/* On Fire mode */

#board-wrapper.on-fire #board {

    box-shadow:

        inset 0 0 30px rgba(0, 0, 0, 0.3),

        0 0 20px rgba(255, 150, 50, 0.25),

        0 0 40px rgba(255, 100, 50, 0.1);

}

#board-wrapper.on-fire::before {

    content: '🔥 ON FIRE 🔥';

    position: absolute;

    top: -2px;

    left: 50%;

    transform: translateX(-50%);

    font-size: 11px;

    font-weight: 800;

    color: var(--fire-a);

    letter-spacing: 2px;

    z-index: 20;

    animation: fire-text-pulse 0.5s ease-in-out infinite alternate;

    white-space: nowrap;

}

@keyframes fire-text-pulse {

    from { opacity: 0.7; transform: translateX(-50%) scale(1); }

    to   { opacity: 1;   transform: translateX(-50%) scale(1.05); }

}



/* ---- Emoji cells ---- */

.emoji-cell {

    position: absolute;

    display: flex;

    align-items: center;

    justify-content: center;

    background: var(--cell-bg);

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

    cursor: pointer;

    transition: top 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), left 0.2s ease;

    will-change: top, transform;

    z-index: 2;

}

.emoji-cell::after {

    content: '';

    position: absolute;

    inset: 2px;

    border-radius: calc(var(--cell-radius) - 1px);

    border: 1.5px solid rgba(255, 255, 255, 0.06);

    pointer-events: none;

}



/* Selection */

.emoji-cell.selected {

    background: var(--cell-selected);

    transform: scale(1.1);

    z-index: 3;

    box-shadow: 0 0 16px var(--accent-glow), 0 0 4px var(--accent-glow);

    transition: top 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), left 0.2s ease,

                transform var(--transition-fast) ease, background var(--transition-fast) ease,

                box-shadow var(--transition-fast) ease;

}

.emoji-cell.selected::after { border-color: rgba(255, 217, 61, 0.4); }



/* Landing */

.emoji-cell.landed { animation: land-bounce 0.25s ease-out; }

@keyframes land-bounce {

    0% { transform: scaleY(0.85) scaleX(1.1); }

    50% { transform: scaleY(1.08) scaleX(0.95); }

    100% { transform: scaleY(1) scaleX(1); }

}



/* Clearing */

.emoji-cell.clearing {

    animation: clear-pop 0.4s ease-out forwards;

    z-index: 4;

    pointer-events: none;

}

@keyframes clear-pop {

    0%   { transform: scale(1);   opacity: 1; }

    40%  { transform: scale(1.4); opacity: 0.8; }

    100% { transform: scale(0);   opacity: 0; }

}



/* Chain glow */

.emoji-cell.chain-glow {

    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5), 0 0 8px rgba(255, 217, 61, 0.5);

    transform: scale(1.15);

    z-index: 4;

    transition: transform 0.15s ease, box-shadow 0.15s ease;

}



/* Gravity */

.emoji-cell.gravity {

    transition: top 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);

}



/* Lucky convert */

.emoji-cell.lucky-convert {

    animation: lucky-flash 0.5s ease-out;

}

@keyframes lucky-flash {

    0%  { filter: brightness(2.5); transform: scale(1.3); }

    100% { filter: brightness(1); transform: scale(1); }

}



/* ---- Powerup styles ---- */

.emoji-cell.pw-bomb {

    animation: pw-glow-orange 1.5s ease-in-out infinite;

}

.emoji-cell.pw-row {

    animation: pw-glow-yellow 1.5s ease-in-out infinite;

}

.emoji-cell.pw-col {

    animation: pw-glow-blue 1.5s ease-in-out infinite;

}

.emoji-cell.pw-rainbow {

    animation: pw-glow-rainbow 2s linear infinite;

}

.emoji-cell.pw-lucky {

    animation: pw-glow-green 1.5s ease-in-out infinite;

}

.emoji-cell.pw-freeze {

    animation: pw-glow-cyan 1.5s ease-in-out infinite;

}



@keyframes pw-glow-orange {

    0%, 100% { box-shadow: 0 0 8px rgba(255, 100, 50, 0.3); }

    50% { box-shadow: 0 0 16px rgba(255, 100, 50, 0.6), 0 0 4px rgba(255, 200, 50, 0.3); }

}

@keyframes pw-glow-yellow {

    0%, 100% { box-shadow: 0 0 8px rgba(255, 217, 61, 0.3); }

    50% { box-shadow: 0 0 16px rgba(255, 217, 61, 0.6), 0 0 4px rgba(255, 255, 100, 0.3); }

}

@keyframes pw-glow-blue {

    0%, 100% { box-shadow: 0 0 8px rgba(100, 150, 255, 0.3); }

    50% { box-shadow: 0 0 16px rgba(100, 150, 255, 0.6), 0 0 4px rgba(150, 200, 255, 0.3); }

}

@keyframes pw-glow-green {

    0%, 100% { box-shadow: 0 0 8px rgba(46, 213, 115, 0.3); }

    50% { box-shadow: 0 0 16px rgba(46, 213, 115, 0.6), 0 0 4px rgba(100, 255, 150, 0.3); }

}

@keyframes pw-glow-cyan {

    0%, 100% { box-shadow: 0 0 8px rgba(0, 210, 255, 0.3); }

    50% { box-shadow: 0 0 16px rgba(0, 210, 255, 0.6), 0 0 4px rgba(100, 240, 255, 0.3); }

}

@keyframes pw-glow-rainbow {

    0%   { box-shadow: 0 0 14px rgba(255, 100, 100, 0.5); }

    25%  { box-shadow: 0 0 14px rgba(255, 217, 61, 0.5); }

    50%  { box-shadow: 0 0 14px rgba(100, 255, 100, 0.5); }

    75%  { box-shadow: 0 0 14px rgba(100, 150, 255, 0.5); }

    100% { box-shadow: 0 0 14px rgba(255, 100, 100, 0.5); }

}



/* Powerup clear effects */

.emoji-cell.bomb-clear {

    animation: bomb-pop 0.4s ease-out forwards;

}

@keyframes bomb-pop {

    0%   { transform: scale(1);   opacity: 1; filter: brightness(1); }

    30%  { transform: scale(1.5); opacity: 1; filter: brightness(2); }

    100% { transform: scale(0.2); opacity: 0; filter: brightness(3); }

}

.emoji-cell.row-clear {

    animation: row-sweep 0.4s ease-out forwards;

}

@keyframes row-sweep {

    0%   { transform: scaleX(1) scaleY(1);   opacity: 1; }

    40%  { transform: scaleX(1.5) scaleY(0.6); opacity: 0.8; }

    100% { transform: scaleX(2) scaleY(0);   opacity: 0; }

}

.emoji-cell.col-clear {

    animation: col-sweep 0.4s ease-out forwards;

}

@keyframes col-sweep {

    0%   { transform: scaleY(1) scaleX(1);   opacity: 1; }

    40%  { transform: scaleY(1.5) scaleX(0.6); opacity: 0.8; }

    100% { transform: scaleY(2) scaleX(0);   opacity: 0; }

}

.emoji-cell.rainbow-clear {

    animation: rainbow-pop 0.45s ease-out forwards;

}

@keyframes rainbow-pop {

    0%   { transform: scale(1);   opacity: 1; filter: hue-rotate(0deg); }

    50%  { transform: scale(1.3); opacity: 0.8; filter: hue-rotate(180deg); }

    100% { transform: scale(0);   opacity: 0; filter: hue-rotate(360deg); }

}



/* Freeze clear effect */

.emoji-cell.freeze-clear {

    animation: freeze-pop 0.45s ease-out forwards;

}

@keyframes freeze-pop {

    0%   { transform: scale(1);   opacity: 1; filter: brightness(1) hue-rotate(180deg); }

    50%  { transform: scale(1.3); opacity: 0.8; filter: brightness(2) hue-rotate(200deg); }

    100% { transform: scale(0);   opacity: 0; filter: brightness(3) hue-rotate(220deg); }

}



/* Freeze timer bar - shown above the board during freeze */

#freeze-bar {

    position: absolute;

    top: 0;

    left: 0;

    right: 0;

    height: 6px;

    z-index: 15;

    background: rgba(0, 210, 255, 0.15);

    border-radius: 3px;

    overflow: hidden;

    opacity: 0;

    transition: opacity 0.2s;

    pointer-events: none;

}

#freeze-bar.active {

    opacity: 1;

}

#freeze-fill {

    height: 100%;

    width: 100%;

    background: linear-gradient(90deg, #00d2ff, #7effff, #00d2ff);

    background-size: 200% 100%;

    border-radius: 3px;

    transition: width 0.1s linear;

    animation: freeze-shimmer 1s linear infinite;

}

@keyframes freeze-shimmer {

    0% { background-position: 0% 0%; }

    100% { background-position: 200% 0%; }

}



/* Freeze active board tint */

#board-wrapper.frozen #board {

    box-shadow:

        inset 0 0 30px rgba(0, 0, 0, 0.3),

        0 0 15px rgba(0, 210, 255, 0.2),

        0 0 30px rgba(0, 210, 255, 0.08);

}

#board-wrapper.frozen::before {

    content: '⏸ FROZEN ⏸';

    position: absolute;

    top: -2px;

    left: 50%;

    transform: translateX(-50%);

    font-size: 11px;

    font-weight: 800;

    color: #00d2ff;

    letter-spacing: 2px;

    z-index: 20;

    animation: freeze-text-pulse 0.8s ease-in-out infinite alternate;

    white-space: nowrap;

}

@keyframes freeze-text-pulse {

    from { opacity: 0.6; transform: translateX(-50%) scale(1); }

    to   { opacity: 1;   transform: translateX(-50%) scale(1.05); }

}



/* Last chance bomb pulse */

.emoji-cell.last-chance-bomb {

    animation: lc-bomb-pulse 0.5s ease-in-out infinite alternate;

    z-index: 6;

}

@keyframes lc-bomb-pulse {

    from { transform: scale(1);   box-shadow: 0 0 10px rgba(255, 71, 87, 0.5); }

    to   { transform: scale(1.2); box-shadow: 0 0 25px rgba(255, 71, 87, 0.8), 0 0 8px rgba(255, 200, 50, 0.4); }

}



/* ---- Particles ---- */

#particles {

    position: fixed;

    inset: 0;

    pointer-events: none;

    z-index: 200;

    overflow: hidden;

}

.particle {

    position: fixed;

    font-size: 14px;

    pointer-events: none;

    animation: particle-fly 0.65s ease-out forwards;

    z-index: 200;

}

@keyframes particle-fly {

    0%   { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 1; }

    100% { transform: translate(var(--tx), var(--ty)) scale(0.2) rotate(var(--rot)); opacity: 0; }

}



/* Score popup */

.score-popup {

    position: absolute;

    font-size: 18px;

    font-weight: 800;

    color: var(--accent);

    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);

    pointer-events: none;

    z-index: 20;

    animation: score-float 0.9s ease-out forwards;

    white-space: nowrap;

    transform: translateX(-50%);

}

.score-popup.big-combo {

    font-size: 24px;

    color: var(--fire-a);

    text-shadow: 0 0 10px rgba(255, 107, 107, 0.5);

}

@keyframes score-float {

    0%   { transform: translateX(-50%) translateY(0) scale(0.5); opacity: 0; }

    20%  { transform: translateX(-50%) translateY(-10px) scale(1.1); opacity: 1; }

    100% { transform: translateX(-50%) translateY(-60px) scale(0.9); opacity: 0; }

}



/* Screen shake */

.shake { animation: shake 0.3s ease-out; }

@keyframes shake {

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

    20% { transform: translateX(-4px) rotate(-0.5deg); }

    40% { transform: translateX(4px) rotate(0.5deg); }

    60% { transform: translateX(-3px); }

    80% { transform: translateX(2px); }

}



/* Level up flash */

.level-up-flash::after {

    content: '';

    position: absolute;

    inset: 0;

    background: rgba(255, 217, 61, 0.15);

    border-radius: 12px;

    animation: level-flash 0.5s ease-out forwards;

    pointer-events: none;

    z-index: 10;

}

@keyframes level-flash {

    0% { opacity: 1; }

    100% { opacity: 0; }

}



/* ---- Toast notifications ---- */

#toasts {

    position: fixed;

    top: 60px;

    left: 50%;

    transform: translateX(-50%);

    z-index: 300;

    display: flex;

    flex-direction: column;

    align-items: center;

    gap: 6px;

    pointer-events: none;

    width: 300px;

}

.toast {

    padding: 8px 20px;

    border-radius: 20px;

    font-size: 14px;

    font-weight: 700;

    color: #fff;

    background: rgba(30, 20, 60, 0.9);

    backdrop-filter: blur(8px);

    -webkit-backdrop-filter: blur(8px);

    border: 1px solid rgba(255, 255, 255, 0.1);

    opacity: 0;

    transform: translateY(-10px) scale(0.9);

    transition: opacity 0.25s ease, transform 0.25s ease;

    white-space: nowrap;

}

.toast.show {

    opacity: 1;

    transform: translateY(0) scale(1);

}

.toast.hide {

    opacity: 0;

    transform: translateY(-10px) scale(0.9);

}

.toast-chain  { color: #a29bfe; border-color: rgba(162, 155, 254, 0.3); }

.toast-combo  { color: var(--accent); border-color: rgba(255, 217, 61, 0.3); }

.toast-best   { color: var(--accent); border-color: rgba(255, 217, 61, 0.3); background: rgba(60, 40, 10, 0.9); }

.toast-fire   { color: var(--fire-a); border-color: rgba(255, 107, 107, 0.3); }

.toast-powerup { color: var(--success); border-color: rgba(46, 213, 115, 0.3); }

.toast-danger { color: var(--danger); border-color: rgba(255, 71, 87, 0.3); }



/* ---- Help Modal ---- */

.modal-overlay {

    position: fixed;

    inset: 0;

    z-index: 150;

    background: rgba(0, 0, 0, 0.7);

    backdrop-filter: blur(4px);

    -webkit-backdrop-filter: blur(4px);

    display: flex;

    align-items: center;

    justify-content: center;

    opacity: 0;

    pointer-events: none;

    transition: opacity 0.25s ease;

    padding: 20px;

}

.modal-overlay.active {

    opacity: 1;

    pointer-events: auto;

}

.modal-content {

    background: linear-gradient(170deg, #1e1650, #150f35);

    border: 1px solid rgba(255, 255, 255, 0.08);

    border-radius: 20px;

    padding: 28px 24px;

    max-width: 360px;

    width: 100%;

    max-height: 80vh;

    overflow-y: auto;

    position: relative;

    transform: scale(0.9);

    transition: transform 0.25s ease;

}

.modal-overlay.active .modal-content {

    transform: scale(1);

}

.modal-close {

    position: absolute;

    top: 12px;

    right: 16px;

    width: 32px;

    height: 32px;

    border: none;

    background: rgba(255, 255, 255, 0.08);

    color: var(--text-secondary);

    font-size: 20px;

    border-radius: 8px;

    cursor: pointer;

    display: flex;

    align-items: center;

    justify-content: center;

}

.modal-title {

    font-size: 22px;

    font-weight: 800;

    margin-bottom: 20px;

}

.help-section {

    margin-bottom: 16px;

    text-align: left;

}

.help-section h4 {

    font-size: 14px;

    font-weight: 700;

    margin-bottom: 6px;

    color: var(--text-primary);

}

.help-section p {

    font-size: 13px;

    color: var(--text-secondary);

    line-height: 1.5;

}

.help-powerups {

    display: flex;

    flex-direction: column;

    gap: 6px;

}

.help-pw {

    font-size: 13px;

    color: var(--text-secondary);

    line-height: 1.4;

}

.help-pw span {

    font-size: 16px;

    margin-right: 4px;

}



/* ---- Pause Overlay ---- */

.game-overlay {

    position: absolute;

    inset: 0;

    z-index: 50;

    background: rgba(0, 0, 0, 0.75);

    backdrop-filter: blur(6px);

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

    display: flex;

    align-items: center;

    justify-content: center;

    opacity: 0;

    pointer-events: none;

    transition: opacity 0.2s ease;

}

.game-overlay.active {

    opacity: 1;

    pointer-events: auto;

}

.overlay-content {

    display: flex;

    flex-direction: column;

    align-items: center;

    gap: 4px;

}

.overlay-title {

    font-size: 28px;

    font-weight: 800;

    margin-bottom: 20px;

}



/* ---- Last Chance Overlay ---- */

.lc-overlay {

    background: linear-gradient(

        to bottom,

        rgba(255, 40, 60, 0.8) 0%,

        transparent 35%,

        transparent 65%,

        rgba(255, 40, 60, 0.8) 100%

    );

    backdrop-filter: none;

    -webkit-backdrop-filter: none;

}

/* Last chance overlay is purely visual - taps must pass through to the board */

.lc-overlay.active {

    pointer-events: none;

}

.lc-content {

    text-align: center;

    animation: lc-appear 0.4s ease-out;

}

@keyframes lc-appear {

    0% { transform: scale(0.5); opacity: 0; }

    60% { transform: scale(1.1); }

    100% { transform: scale(1); opacity: 1; }

}

.lc-title {

    font-size: 32px;

    font-weight: 900;

    color: #fff;

    text-shadow: 0 0 20px rgba(255, 71, 87, 0.8);

    animation: lc-pulse 0.6s ease-in-out infinite alternate;

}

@keyframes lc-pulse {

    from { transform: scale(1); }

    to   { transform: scale(1.08); }

}

.lc-subtitle {

    font-size: 16px;

    color: rgba(255, 255, 255, 0.85);

    margin: 8px 0 16px;

}

.lc-timer {

    font-size: 48px;

    font-weight: 900;

    color: #fff;

    text-shadow: 0 0 30px rgba(255, 71, 87, 0.8);

}



/* ---- Game Over Screen ---- */

.gameover-title {

    font-size: 36px;

    font-weight: 800;

    margin-bottom: 8px;

}

#new-best-badge {

    font-size: 18px;

    font-weight: 700;

    color: var(--accent);

    background: rgba(255, 217, 61, 0.15);

    padding: 6px 20px;

    border-radius: 20px;

    margin-bottom: 16px;

    animation: badge-pop 0.5s ease-out;

}

#almost-badge {

    font-size: 15px;

    font-weight: 600;

    color: var(--fire-a);

    margin-bottom: 12px;

    animation: badge-pop 0.5s ease-out;

}

@keyframes badge-pop {

    0%  { transform: scale(0); opacity: 0; }

    60% { transform: scale(1.2); }

    100% { transform: scale(1); opacity: 1; }

}

.hidden { display: none !important; }



.final-score-block, .final-best-block { margin-bottom: 6px; }

.final-label {

    display: block;

    font-size: 12px;

    color: var(--text-secondary);

    text-transform: uppercase;

    letter-spacing: 1px;

    font-weight: 600;

}

.final-value {

    font-size: 52px;

    font-weight: 800;

    line-height: 1.1;

    font-variant-numeric: tabular-nums;

}

.final-value-small {

    font-size: 26px;

    color: var(--text-secondary);

}

.final-stats {

    display: flex;

    gap: 20px;

    margin: 20px 0 16px;

}

.final-stat {

    display: flex;

    flex-direction: column;

    align-items: center;

}

.final-stat-num {

    font-size: 22px;

    font-weight: 800;

    font-variant-numeric: tabular-nums;

}

.final-stat-label {

    font-size: 10px;

    color: var(--text-secondary);

    text-transform: uppercase;

    letter-spacing: 0.5px;

    margin-top: 2px;

}

.motivation-text {

    font-size: 15px;

    font-weight: 600;

    color: var(--fire-a);

    margin-bottom: 20px;

    animation: badge-pop 0.5s ease-out 0.3s both;

}



/* ---- Back to Games (inline in menu & gameover) ---- */

.back-to-games-inline {

    display: inline-block;

    color: rgba(255, 255, 255, 0.35);

    text-decoration: none;

    font-size: 13px;

    font-weight: 600;

    padding: 6px 14px;

    border-radius: 10px;

    margin-bottom: 12px;

    transition: color 150ms, background 150ms;

}

.back-to-games-inline:active {

    background: rgba(255, 255, 255, 0.08);

    color: #fff;

}

.gameover-back {

    margin-top: 12px;

    margin-bottom: 0;

}



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

@media (min-width: 421px) {

    body {

        display: flex;

        align-items: center;

        justify-content: center;

        background: #080620;

    }

    #app {

        border-radius: 24px;

        box-shadow: 0 0 60px rgba(30, 20, 80, 0.5);

        border: 1px solid rgba(255, 255, 255, 0.05);

        max-height: 900px;

    }

}



@supports (padding-top: env(safe-area-inset-top)) {

    #game-header {

        padding-top: calc(10px + env(safe-area-inset-top));

    }

}