/* ===========================
   BASE
=========================== */
* { margin:0; padding:0; box-sizing:border-box; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1400, #2d2200, #3d2e00);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 20px 15px 60px;
    color: white;
    overflow-x: hidden;
    transition: background 1s ease;
}

/* ===========================
   PARTICLES
=========================== */
.particles {
    position: fixed;
    top:0; left:0;
    width:100%; height:100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    animation: floatUp linear infinite;
    user-select: none;
}

@keyframes floatUp {
    0%   { transform:translateY(0) rotate(0deg);    opacity:0.1; }
    50%  { opacity:0.2; }
    100% { transform:translateY(-100vh) rotate(360deg); opacity:0; }
}

/* ===========================
   CONTAINER
=========================== */
.container {
    max-width: 680px;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* ===========================
   HEADER
=========================== */
.header {
    text-align: center;
    margin-bottom: 30px;
    animation: slideDown 0.8s ease;
}

.game-logo {
    font-size: 4rem;
    margin-bottom: 10px;
    animation: logoBounce 2s ease infinite alternate;
    display: block;
}

@keyframes logoBounce {
    from { transform: scale(1) rotate(-5deg); }
    to   { transform: scale(1.1) rotate(5deg); }
}

h1 {
    font-size: 2.2rem;
    background: linear-gradient(
        135deg, #FFD700, #FFA500, #FFCC00, #FFE44D
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

h2 {
    font-size: 1.4rem;
    color: #FFD700;
    margin-bottom: 12px;
    text-align: center;
}

h3 { font-size:1.1rem; color:#ccd6f6; margin-bottom:12px; }

.tagline {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

@keyframes slideDown {
    from { opacity:0; transform:translateY(-30px); }
    to   { opacity:1; transform:translateY(0); }
}

/* ===========================
   CARDS
=========================== */
.card {
    background: rgba(255,215,0,0.04);
    border: 1px solid rgba(255,215,0,0.15);
    border-radius: 20px;
    padding: 25px 22px;
    margin-bottom: 18px;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity:0; transform:translateY(12px); }
    to   { opacity:1; transform:translateY(0); }
}

.subtitle {
    color: #a8b2d8;
    text-align: center;
    font-size: 0.88rem;
    margin-bottom: 15px;
}

/* ===========================
   MODE CARDS
=========================== */
.mode-cards {
    display: flex;
    gap: 14px;
    margin-bottom: 15px;
}

.mode-card {
    flex: 1;
    background: rgba(255,255,255,0.06);
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 25px 18px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
    backdrop-filter: blur(10px);
}

.pvb-card {
    border-color: rgba(255,215,0,0.35);
    background: rgba(255,215,0,0.06);
}

.pvp-card {
    border-color: rgba(168,85,247,0.3);
    background: rgba(168,85,247,0.06);
}

.pvb-card:hover {
    border-color: #FFD700;
    background: rgba(255,215,0,0.15);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(255,215,0,0.35);
}

.pvp-card:hover {
    border-color: #A855F7;
    background: rgba(168,85,247,0.15);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(168,85,247,0.3);
}

.mode-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    display: block;
    animation: modeIconBounce 2s ease infinite alternate;
}

@keyframes modeIconBounce {
    from { transform: translateY(0); }
    to   { transform: translateY(-5px); }
}

.mode-card h2 {
    font-size: 1.1rem;
    color: white;
    margin-bottom: 8px;
}

.mode-card p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.5;
    margin-bottom: 12px;
}

.mode-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.pvb-card .mode-badge {
    background: rgba(255,107,107,0.3);
    color: #FF6B6B;
}

.pvp-card .mode-badge {
    background: rgba(168,85,247,0.3);
    color: #A855F7;
}

/* ===========================
   RESUME + SHOW BUTTON
=========================== */
.resume-card {
    border-color: rgba(255,211,42,0.3);
    background: rgba(255,211,42,0.05);
}

.show-resume-btn {
    width: 100%;
    padding: 12px;
    background: rgba(255,255,255,0.05);
    color: rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.25s;
    margin-bottom: 15px;
}

.show-resume-btn:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.resume-btn {
    width: 100%;
    padding: 13px;
    margin-top: 12px;
    background: linear-gradient(135deg, #FFD32A, #F39C12);
    color: #1a1a2e;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.resume-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255,211,42,0.4);
}

/* ===========================
   HOW TO PLAY
=========================== */
.how-to-card { text-align:center; }

.how-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}

.how-step {
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    background: rgba(255,255,255,0.04);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.88rem;
    color: #ccd6f6;
}

.step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FF6B6B, #FFD32A);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 0.8rem;
    color: white;
    flex-shrink: 0;
}

/* ===========================
   DIFFICULTY CARDS
=========================== */
.difficulty-cards {
    display: flex;
    gap: 10px;
    margin-top: 5px;
}

.diff-card {
    flex: 1;
    padding: 12px 8px;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: all 0.2s;
}

.diff-card span:first-child { font-size: 1.4rem; }

.diff-card:hover,
.diff-card.selected {
    border-color: #FFD32A;
    background: rgba(255,211,42,0.1);
    color: #FFD32A;
}

/* ===========================
   LABELS + INPUTS
=========================== */
label {
    display: block;
    color: #ccd6f6;
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: 16px;
    margin-bottom: 7px;
}

input[type="text"],
select, textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.07);
    border: 2px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    color: white;
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}

input:focus, select:focus, textarea:focus {
    border-color: #FF6B6B;
}

select option { background: #1a1a2e; }
textarea { resize:vertical; min-height:80px; }

/* ===========================
   BUTTONS
=========================== */
.main-btn {
    display: block;
    width: 100%;
    padding: 14px;
    margin-top: 20px;
    background: linear-gradient(135deg, #FF6B6B, #ee5a24);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.main-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255,107,107,0.45);
}

.main-btn:disabled {
    background: #444;
    cursor: not-allowed;
    transform: none;
}

.back-btn {
    padding: 8px 14px;
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.7);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    font-size: 0.88rem;
    cursor: pointer;
    margin-bottom: 15px;
    transition: background 0.2s;
}

.back-btn:hover { background: rgba(255,255,255,0.15); }

.next-level-btn {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background: linear-gradient(135deg, #00D26A, #00B894);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s;
}

.next-level-btn:hover { transform: translateY(-2px); }

.replay-btn {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.7);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.replay-btn:hover { background: rgba(255,255,255,0.15); }

.back-game-btn {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s;
}

.back-game-btn:hover { background: rgba(255,255,255,0.12); }

/* ===========================
   ERROR
=========================== */
.error {
    color: #ff4757;
    font-size: 0.85rem;
    margin-top: 8px;
    text-align: center;
    min-height: 20px;
}

/* ===========================
   GAME TOP BAR
=========================== */
.game-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: rgba(255,255,255,0.06);
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 12px;
}

.top-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.level-badge {
    background: linear-gradient(135deg, #FF6B6B, #FFD32A);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 800;
    color: white;
}

.top-center {
    color: #FFD32A;
    font-weight: 800;
    font-size: 0.88rem;
}

.timer-box {
    color: #00D26A;
    font-weight: 800;
    font-size: 0.9rem;
    background: rgba(0,210,106,0.1);
    padding: 5px 12px;
    border-radius: 10px;
    border: 1px solid rgba(0,210,106,0.3);
}

/* ===========================
   SCORE BAR
=========================== */
.score-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.player-score-display {
    flex: 1;
    padding: 12px;
    border-radius: 14px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.82rem;
    font-weight: 700;
}

.p1-display {
    background: rgba(255,107,107,0.1);
    border: 1px solid rgba(255,107,107,0.3);
    color: #FF6B6B;
}

.p2-display {
    background: rgba(168,85,247,0.1);
    border: 1px solid rgba(168,85,247,0.3);
    color: #A855F7;
}

.score-val {
    font-size: 1.8rem;
    font-weight: 900;
    display: block;
    transition: transform 0.3s;
}

.vs-badge {
    background: linear-gradient(135deg, #FF6B6B, #A855F7);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 0.78rem;
    flex-shrink: 0;
}

/* ===========================
   STORY CARD
=========================== */
.story-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 20px;
    padding: 30px 24px;
    text-align: center;
    margin-bottom: 15px;
    animation: fadeIn 0.6s ease;
}

.story-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 15px;
    animation: storyIconFloat 3s ease infinite alternate;
}

@keyframes storyIconFloat {
    from { transform: translateY(0) rotate(-5deg); }
    to   { transform: translateY(-10px) rotate(5deg); }
}

.story-card h3 {
    font-size: 1.5rem;
    color: #FFD32A;
    margin-bottom: 12px;
    text-align: center;
}

.story-card p {
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 5px;
    font-size: 0.93rem;
}

/* ===========================
   CURRENT PLAYER BANNER
=========================== */
.current-player-banner {
    text-align: center;
    padding: 10px;
    background: linear-gradient(
        135deg,
        rgba(255,107,107,0.15),
        rgba(255,211,42,0.15)
    );
    border: 1px solid rgba(255,211,42,0.3);
    border-radius: 12px;
    color: #FFD32A;
    font-weight: 800;
    font-size: 0.95rem;
    margin-bottom: 12px;
    animation: bannerPulse 2s ease infinite alternate;
}

@keyframes bannerPulse {
    from { box-shadow: 0 0 10px rgba(255,211,42,0.2); }
    to   { box-shadow: 0 0 25px rgba(255,211,42,0.5); }
}

/* ===========================
   HINT BAR
=========================== */
.hint-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.hint-btn {
    flex: 1;
    padding: 9px 12px;
    background: rgba(255,211,42,0.15);
    border: 1px solid rgba(255,211,42,0.3);
    color: #FFD32A;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
}

.hint-btn:hover:not(:disabled) {
    background: rgba(255,211,42,0.25);
}

.hint-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.moves-display {
    color: #a8b2d8;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
}

.preview-btn {
    flex: 1;
    padding: 9px 12px;
    background: rgba(0,210,106,0.15);
    border: 1px solid rgba(0,210,106,0.3);
    color: #00D26A;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
}

.preview-btn:hover { background: rgba(0,210,106,0.25); }

/* ===========================
   PUZZLE WRAPPER + GRID
=========================== */
.puzzle-wrapper {
    position: relative;
    margin-bottom: 12px;
}

.puzzle-grid {
    display: grid;
    gap: 5px;
    background: rgba(255,255,255,0.04);
    padding: 12px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
}

.tile {
    aspect-ratio: 1;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: white;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s;
    text-shadow: 0 2px 4px rgba(0,0,0,0.4);
    border: 2px solid rgba(255,255,255,0.2);
    user-select: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.tile:hover:not(.empty-tile) {
    transform: scale(0.95);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.5);
}

.tile:active:not(.empty-tile) {
    transform: scale(0.9);
}

.empty-tile {
    background: rgba(255,255,255,0.04) !important;
    border: 2px dashed rgba(255,255,255,0.1) !important;
    cursor: default !important;
    box-shadow: none !important;
}

/* ===========================
   PREVIEW OVERLAY
=========================== */
.preview-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.92);
    border-radius: 16px;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    padding: 15px;
    backdrop-filter: blur(5px);
}

.preview-overlay.show {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.preview-grid {
    display: grid;
    gap: 3px;
    max-width: 100%;
}

.preview-tile {
    aspect-ratio: 1;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: white;
    font-size: 0.75rem;
    opacity: 0.9;
}

/* ===========================
   PUZZLE PROGRESS
=========================== */
.puzzle-progress { margin-bottom: 12px; }

.progress-bar-container {
    background: rgba(255,255,255,0.08);
    border-radius: 50px;
    height: 8px;
    overflow: hidden;
    margin-bottom: 4px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #FF6B6B, #FFD32A, #00D26A);
    border-radius: 50px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    color: rgba(255,255,255,0.4);
    font-size: 0.75rem;
    text-align: right;
}

/* ===========================
   POPUP
=========================== */
.popup-overlay {
    position: fixed;
    top:0; left:0;
    width:100%; height:100%;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s;
}

.popup-overlay.show {
    opacity: 1;
    pointer-events: all;
}

.popup-card {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 24px;
    padding: 35px 28px;
    max-width: 380px;
    width: 90%;
    text-align: center;
    transform: scale(0.7) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
    box-shadow: 0 25px 60px rgba(0,0,0,0.5);
}

.popup-overlay.show .popup-card {
    transform: scale(1) translateY(0);
}

.popup-icon {
    font-size: 3.5rem;
    margin-bottom: 12px;
    display: block;
    animation: popupIconBounce 1s ease infinite alternate;
}

@keyframes popupIconBounce {
    from { transform: scale(1); }
    to   { transform: scale(1.15) rotate(5deg); }
}

.popup-stats {
    display: flex;
    gap: 10px;
    margin: 18px 0;
}

.popup-stat {
    flex: 1;
    background: rgba(255,255,255,0.06);
    border-radius: 12px;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.78rem;
    color: rgba(255,255,255,0.6);
}

.popup-stat span:last-child {
    font-size: 1.1rem;
    font-weight: 900;
    color: #FFD32A;
}

/* ===========================
   END PAGE
=========================== */
.winner-banner {
    text-align: center;
    margin-bottom: 25px;
    animation: slideDown 0.8s ease;
}

.winner-trophy {
    font-size: 5rem;
    display: block;
    margin-bottom: 12px;
    animation: trophyFloat 2s ease infinite alternate;
}

@keyframes trophyFloat {
    from { transform: translateY(0) rotate(-5deg) scale(1); }
    to   { transform: translateY(-10px) rotate(5deg) scale(1.1); }
}

@keyframes slideDown {
    from { opacity:0; transform:translateY(-30px); }
    to   { opacity:1; transform:translateY(0); }
}

.final-score-card { text-align: center; }

.final-players {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
}

.final-player {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
}

.winner-player {
    background: rgba(255,211,42,0.1) !important;
    border-color: rgba(255,211,42,0.4) !important;
    box-shadow: 0 0 30px rgba(255,211,42,0.2) !important;
}

.final-avatar { font-size: 2.5rem; }

.final-name {
    font-size: 0.88rem;
    font-weight: 700;
    color: #ccd6f6;
}

.final-score-big {
    font-size: 2.8rem;
    font-weight: 900;
    color: #FFD32A;
    line-height: 1;
}

.final-label {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.4);
}

.winner-crown {
    background: linear-gradient(135deg, #FFD32A, #F39C12);
    color: #1a1a2e;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 900;
    margin-top: 5px;
}

.vs-divider {
    background: linear-gradient(135deg, #FF6B6B, #A855F7);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 0.78rem;
    flex-shrink: 0;
}

/* ===========================
   LEVEL BREAKDOWN
=========================== */
.level-breakdown-row {
    background: rgba(255,255,255,0.04);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 10px;
    border: 1px solid rgba(255,255,255,0.07);
}

.breakdown-level {
    font-weight: 800;
    color: #FFD32A;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.breakdown-players {
    display: flex;
    gap: 10px;
}

.breakdown-player {
    flex: 1;
    padding: 10px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.78rem;
}

.p1-breakdown {
    background: rgba(255,107,107,0.08);
    border: 1px solid rgba(255,107,107,0.2);
    color: #FF6B6B;
}

.p2-breakdown {
    background: rgba(168,85,247,0.08);
    border: 1px solid rgba(168,85,247,0.2);
    color: #A855F7;
}

.breakdown-stat { color: rgba(255,255,255,0.55); }

.breakdown-points {
    color: #00D26A;
    font-weight: 800;
}

.not-played {
    color: rgba(255,255,255,0.3);
    font-style: italic;
}

/* ===========================
   STAR RATING
=========================== */
.star-rating {
    display: flex;
    gap: 8px;
    font-size: 2.2rem;
    margin-top: 5px;
    cursor: pointer;
}

.star {
    color: rgba(255,255,255,0.2);
    transition: color 0.2s, transform 0.2s;
    user-select: none;
}

.star:hover, .star.active {
    color: #FFD32A;
    transform: scale(1.2);
}

.star-label {
    color: #a8b2d8;
    font-size: 0.85rem;
    margin-top: 5px;
    min-height: 20px;
}

/* ===========================
   CONFETTI
=========================== */
#confettiContainer {
    position: fixed;
    top:0; left:0;
    width:100%; height:100%;
    pointer-events: none;
    z-index: 999;
}

.confetti-piece {
    position: absolute;
    top: -20px;
    animation: confettiFall linear forwards;
}

@keyframes confettiFall {
    0%   { transform:translateY(0) rotate(0deg);      opacity:1; }
    100% { transform:translateY(105vh) rotate(720deg); opacity:0; }
}

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width:500px) {
    h1              { font-size:1.6rem; }
    .mode-cards     { flex-direction:column; }
    .final-players  { flex-direction:column; }
    .puzzle-grid    { gap:3px; padding:8px; }
    .tile           { border-radius:7px; }
    .stats-grid     { grid-template-columns:repeat(2,1fr); }
    .score-val      { font-size:1.5rem; }
}