:root {
    --bg: #0f0f1a;
    --card-bg: #1a1a2e;
    --card-bg2: #222240;
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --gold: #f9a825;
    --gold-light: #ffd54f;
    --success: #00c853;
    --danger: #ff1744;
    --danger-light: #ff5252;
    --warning: #ff9100;
    --text: #e0e0e0;
    --text-light: #b0b0b0;
    --text-dark: #1a1a2e;
    --border: #333355;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --radius: 20px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Vazir', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    background-image:
        radial-gradient(ellipse at 20% 20%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(249, 168, 37, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 200, 83, 0.04) 0%, transparent 60%);
    min-height: 100vh;
    color: var(--text);
    direction: rtl;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    flex-direction: column;
}

.app-container {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Screens */
.screen {
    display: none;
    width: 100%;
    animation: fadeSlideIn 0.45s ease forwards;
}
.screen.active {
    display: block;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.04);
    }
}
@keyframes bounceIn {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}
@keyframes shimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}
@keyframes confetti-fall {
    0% {
        transform: translateY(-60px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}
@keyframes glowPulse {
    0%,
    100% {
        box-shadow: 0 0 20px rgba(249, 168, 37, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(249, 168, 37, 0.7), 0 0 80px rgba(249, 168, 37, 0.3);
    }
}

/* Card */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    width: 100%;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--gold), var(--success), var(--primary));
    opacity: 0.6;
    border-radius: 0 0 50% 50%;
}
.card.winner-card::before {
    background: linear-gradient(90deg, var(--gold), #fff, var(--gold-light), #fff, var(--gold));
    height: 5px;
    opacity: 1;
    animation: shimmer 2s linear infinite;
    background-size: 200% auto;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: #fff;
    letter-spacing: -0.3px;
}
.card-title i {
    color: var(--gold);
    margin-left: 6px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 50px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.btn:active {
    transform: scale(0.95);
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
}
.btn-primary:hover {
    background: #7d6ff0;
    box-shadow: 0 6px 24px rgba(108, 92, 231, 0.5);
    transform: translateY(-2px);
}
.btn-success {
    background: var(--success);
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 200, 83, 0.3);
}
.btn-success:hover {
    background: #00e676;
    box-shadow: 0 6px 24px rgba(0, 200, 83, 0.45);
    transform: translateY(-2px);
}
.btn-danger {
    background: var(--danger);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 23, 68, 0.3);
}
.btn-danger:hover {
    background: #ff3355;
    box-shadow: 0 6px 24px rgba(255, 23, 68, 0.45);
    transform: translateY(-2px);
}
.btn-warning {
    background: var(--warning);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 145, 0, 0.3);
}
.btn-warning:hover {
    background: #ffa030;
    box-shadow: 0 6px 24px rgba(255, 145, 0, 0.45);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text);
}
.btn-outline:hover {
    border-color: var(--primary-light);
    color: #fff;
    background: rgba(108, 92, 231, 0.1);
}
.btn-gold {
    background: linear-gradient(135deg, #f9a825, #ff8f00);
    color: #1a1a2e;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(249, 168, 37, 0.4);
    animation: glowPulse 2.5s ease-in-out infinite;
}
.btn-gold:hover {
    box-shadow: 0 8px 32px rgba(249, 168, 37, 0.6);
    transform: translateY(-3px);
}
.btn-lg {
    padding: 16px 32px;
    font-size: 1.15rem;
    border-radius: 60px;
}
.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 40px;
}
.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    padding: 0;
    min-width: 40px;
    font-size: 1.2rem;
}
.btn:disabled,
.btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
    filter: grayscale(30%);
}

/* Input */
.input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.input-group label {
    font-weight: 600;
    min-width: 70px;
    color: var(--text-light);
    font-size: 0.9rem;
}
.input-field {
    flex: 1;
    padding: 11px 16px;
    border-radius: var(--radius-xs);
    border: 2px solid var(--border);
    background: var(--card-bg2);
    color: #fff;
    font-family: var(--font);
    font-size: 0.95rem;
    transition: var(--transition);
    min-width: 140px;
}
.input-field:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}
.counter-group {
    display: flex;
    align-items: center;
    gap: 12px;
    justify-content: center;
}
.counter-value {
    font-size: 1.8rem;
    font-weight: 700;
    min-width: 60px;
    text-align: center;
    color: #fff;
    background: var(--card-bg2);
    border-radius: var(--radius-xs);
    padding: 6px 16px;
    border: 2px solid var(--border);
}
.counter-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background: var(--card-bg2);
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
}
.counter-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.08);
}
.counter-btn:active {
    transform: scale(0.9);
}

/* Team item */
.team-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--card-bg2);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    border: 2px solid transparent;
    transition: var(--transition);
    flex-wrap: wrap;
}
.team-item:hover {
    border-color: var(--border);
}
.team-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
    flex-shrink: 0;
}
.team-avatar.c1 {
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
}
.team-avatar.c2 {
    background: linear-gradient(135deg, #00c853, #69f0ae);
}
.team-avatar.c3 {
    background: linear-gradient(135deg, #ff9100, #ffd54f);
}
.team-avatar.c4 {
    background: linear-gradient(135deg, #ff1744, #ff8a80);
}
.team-avatar.c5 {
    background: linear-gradient(135deg, #00bcd4, #80deea);
}
.team-avatar.c6 {
    background: linear-gradient(135deg, #e040fb, #ea80fc);
}
.team-avatar.c7 {
    background: linear-gradient(135deg, #ff6d00, #ffab40);
}
.team-avatar.c8 {
    background: linear-gradient(135deg, #2979ff, #82b1ff);
}

.team-name-input {
    flex: 1;
    padding: 10px 14px;
    border-radius: var(--radius-xs);
    border: 2px solid var(--border);
    background: var(--card-bg);
    color: #fff;
    font-family: var(--font);
    font-size: 0.9rem;
    transition: var(--transition);
    min-width: 100px;
}
.team-name-input:focus {
    outline: none;
    border-color: var(--primary-light);
}
.team-delete-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 23, 68, 0.2);
    color: var(--danger-light);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.team-delete-btn:hover {
    background: var(--danger);
    color: #fff;
}

/* Timer */
.timer-display {
    font-size: 5rem;
    font-weight: 800;
    text-align: center;
    color: #fff;
    letter-spacing: 2px;
    font-variant-numeric: tabular-nums;
    font-family: 'Courier New', 'Vazir', monospace;
    transition: color 0.5s;
}
.timer-display.warning {
    color: var(--warning);
    animation: pulse 0.6s ease-in-out infinite;
}
.timer-display.danger {
    color: var(--danger);
    animation: pulse 0.35s ease-in-out infinite;
}

/* Word display */
.word-display {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    padding: 20px;
    background: var(--card-bg2);
    border-radius: var(--radius-sm);
    color: var(--gold-light);
    letter-spacing: 1px;
    border: 2px dashed var(--gold);
    animation: bounceIn 0.5s ease;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Score table */
.score-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}
.score-table th {
    padding: 10px 12px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    font-weight: 600;
}
.score-table td {
    padding: 14px 12px;
    text-align: center;
    background: var(--card-bg2);
    font-weight: 600;
    transition: var(--transition);
}
.score-table tr td:first-child {
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
}
.score-table tr td:last-child {
    border-radius: var(--radius-xs) 0 0 var(--radius-xs);
}
.score-table tr.highlight td {
    background: rgba(249, 168, 37, 0.15);
    border: 1px solid rgba(249, 168, 37, 0.3);
    border-left: none;
    border-right: none;
}
.score-table tr.highlight td:first-child {
    border-right: 1px solid rgba(249, 168, 37, 0.3);
}
.score-table tr.highlight td:last-child {
    border-left: 1px solid rgba(249, 168, 37, 0.3);
}
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}
.rank-1 {
    background: linear-gradient(135deg, #f9a825, #ff8f00);
    color: #1a1a2e;
    font-size: 1.3rem;
}
.rank-2 {
    background: #b0bec5;
    color: #1a1a2e;
}
.rank-3 {
    background: #8d6e63;
    color: #fff;
}

/* Category grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
    margin-top: 14px;
}
.cat-card {
    background: var(--card-bg2);
    border-radius: var(--radius-sm);
    padding: 14px 10px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}
.cat-card:hover:not(.used) {
    border-color: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}
.cat-card.used {
    opacity: 0.35;
    cursor: not-allowed;
    filter: grayscale(60%);
    pointer-events: none;
}
.cat-card.golden-card {
    border: 2px solid var(--gold);
    background: rgba(249, 168, 37, 0.08);
    animation: glowPulse 3s ease-in-out infinite;
}
.cat-card.golden-card.used {
    animation: none;
    border-color: #555;
    opacity: 0.3;
}
.cat-icon {
    font-size: 2rem;
    margin-bottom: 6px;
}
.cat-name {
    font-weight: 700;
    font-size: 0.9rem;
    color: #fff;
    margin-bottom: 4px;
}
.cat-points {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--gold-light);
}
.cat-level-btns {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-top: 8px;
    flex-wrap: wrap;
}
.cat-level-btn {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid var(--border);
    background: var(--card-bg);
    color: #fff;
    transition: var(--transition);
    font-family: var(--font);
}
.cat-level-btn:hover:not(.used) {
    border-color: var(--primary-light);
    background: var(--primary);
}
.cat-level-btn.used {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
    text-decoration: line-through;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg2);
    color: #fff;
    padding: 14px 24px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: fadeSlideIn 0.3s ease;
    border: 1px solid var(--border);
    text-align: center;
    max-width: 90vw;
}
.toast.error {
    border-color: var(--danger);
    background: rgba(255, 23, 68, 0.2);
}
.toast.success {
    border-color: var(--success);
    background: rgba(0, 200, 83, 0.2);
}

/* Confetti */
.confetti-piece {
    position: fixed;
    top: -40px;
    z-index: 999;
    pointer-events: none;
    animation: confetti-fall linear forwards;
    font-size: 1.5rem;
}

/* Credit inside card */
.card-credit {
    margin-top: 24px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-light);
    font-size: 0.8rem;
    opacity: 0.6;
    transition: opacity 0.3s;
}
.card-credit:hover {
    opacity: 1;
}
.card-credit a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
}
.card-credit a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 480px) {
    .card {
        padding: 20px 14px;
        border-radius: var(--radius-sm);
    }
    .card-title {
        font-size: 1.2rem;
        margin-bottom: 14px;
    }
    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 8px;
    }
    .cat-card {
        padding: 10px 6px;
    }
    .cat-icon {
        font-size: 1.5rem;
    }
    .cat-name {
        font-size: 0.75rem;
    }
    .timer-display {
        font-size: 3.5rem;
    }
    .word-display {
        font-size: 1.5rem;
        padding: 14px;
    }
    .btn {
        padding: 10px 18px;
        font-size: 0.9rem;
        gap: 5px;
    }
    .btn-lg {
        padding: 12px 24px;
        font-size: 1rem;
    }
    .counter-value {
        font-size: 1.4rem;
        min-width: 44px;
        padding: 4px 10px;
    }
    .counter-btn {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    .score-table th,
    .score-table td {
        padding: 8px 6px;
        font-size: 0.78rem;
    }
    .input-group {
        gap: 6px;
    }
    .team-item {
        padding: 10px 10px;
        gap: 8px;
    }
    .card-credit {
        font-size: 0.7rem;
        margin-top: 18px;
        padding-top: 10px;
    }
}
@media (max-width: 360px) {
    .category-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    .cat-card {
        padding: 8px 4px;
    }
    .cat-level-btns {
        gap: 3px;
    }
    .cat-level-btn {
        padding: 4px 8px;
        font-size: 0.7rem;
    }
}