/* ===== CSS Variables & Reset ===== */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: #1e1e3a;
    --accent-orange: #ff6b35;
    --accent-purple: #7b2ff7;
    --accent-pink: #e91e8c;
    --accent-green: #00e676;
    --accent-red: #ff1744;
    --accent-gold: #ffd700;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #6c6c80;
    --gradient-main: linear-gradient(135deg, #ff6b35, #e91e8c, #7b2ff7);
    --gradient-green: linear-gradient(135deg, #00e676, #00bfa5);
    --gradient-red: linear-gradient(135deg, #ff1744, #d50000);
    --border-color: #2a2a4a;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}


/* ===== Top Bar ===== */
.top-bar {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 24px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.round-history {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    flex: 1;
    padding: 4px 0;
    scrollbar-width: none;
}

.round-history::-webkit-scrollbar {
    display: none;
}

.round-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
    animation: fadeIn 0.3s ease;
}

.round-badge.low {
    background: rgba(255, 23, 68, 0.2);
    color: var(--accent-red);
    border: 1px solid rgba(255, 23, 68, 0.3);
}

.round-badge.mid {
    background: rgba(255, 107, 53, 0.2);
    color: var(--accent-orange);
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.round-badge.high {
    background: rgba(123, 47, 247, 0.2);
    color: var(--accent-purple);
    border: 1px solid rgba(123, 47, 247, 0.3);
}

.round-badge.mega {
    background: rgba(0, 230, 118, 0.2);
    color: var(--accent-green);
    border: 1px solid rgba(0, 230, 118, 0.3);
}

/* ===== Streak Display ===== */
.streak-display {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 215, 0, 0.3);
    flex-shrink: 0;
}

.streak-label {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
}

.streak-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-gold);
}

.balance-display {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sound-toggle {
    padding: 6px 10px;
    background: var(--bg-card);
    border: 1px solid var(--accent-green);
    border-radius: var(--radius-sm);
    color: var(--accent-green);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s;
}

.sound-toggle.muted {
    border-color: var(--text-muted);
    color: var(--text-muted);
}

.balance-label {
    color: var(--text-secondary);
    font-size: 12px;
}

.balance-amount {
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-gold);
}

.coin-icon {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent-gold);
}


/* ===== Main Game Container ===== */
.game-container {
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: 0;
    height: calc(100vh - 56px);
}

/* ===== Left Panel ===== */
.left-panel {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 2px solid transparent;
}

.tab-btn.active {
    color: var(--accent-orange);
    border-bottom-color: var(--accent-orange);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.tab-content.hidden {
    display: none;
}

.leaderboard-entry {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: background 0.2s;
}

.leaderboard-entry:hover {
    background: var(--bg-card);
}

.lb-rank {
    width: 24px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
}

.lb-rank.gold { color: #ffd700; }
.lb-rank.silver { color: #c0c0c0; }
.lb-rank.bronze { color: #cd7f32; }

.lb-name {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}

.lb-score {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-green);
}

.history-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    background: var(--bg-card);
}

.history-crash {
    font-size: 12px;
    font-weight: 700;
}

.history-result {
    font-size: 12px;
    font-weight: 700;
}

.history-result.win { color: var(--accent-green); }
.history-result.loss { color: var(--accent-red); }

/* ===== Progress Tab ===== */
.progress-category {
    margin-bottom: 12px;
    padding: 10px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.progress-category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.progress-category-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-category-count {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-green);
}

.progress-bar-container {
    width: 100%;
    height: 6px;
    background: var(--bg-primary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--gradient-green);
    transition: width 0.3s ease;
}

.progress-difficulty-section {
    margin-top: 14px;
    padding: 10px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.progress-difficulty-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.progress-difficulty-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    font-size: 12px;
}

.progress-difficulty-label {
    color: var(--text-secondary);
}

.progress-difficulty-value {
    font-weight: 700;
    color: var(--accent-orange);
}


/* ===== Center Panel ===== */
.center-panel {
    display: flex;
    flex-direction: column;
    padding: 12px;
    gap: 10px;
    overflow: hidden;
    height: 100%;
}

.game-area {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    padding: 10px;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#multiplierCanvas {
    width: 100%;
    max-width: 600px;
    height: 100%;
    max-height: 200px;
    border-radius: var(--radius-sm);
}

.multiplier-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    pointer-events: none;
}

.multiplier-value {
    font-size: 52px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 0 20px rgba(255, 107, 53, 0.3));
}

.multiplier-value.crashed {
    background: var(--gradient-red);
    -webkit-background-clip: text;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(255, 23, 68, 0.5));
}

.multiplier-value.won {
    background: var(--gradient-green);
    -webkit-background-clip: text;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(0, 230, 118, 0.5));
}

.game-status {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 12px;
    border-radius: 20px;
    white-space: nowrap;
}

/* ===== Question Area ===== */
.question-area {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    flex-shrink: 0;
}

.question-category {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(123, 47, 247, 0.2);
    color: var(--accent-purple);
    border: 1px solid rgba(123, 47, 247, 0.3);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.difficulty-selector {
    display: flex;
    gap: 4px;
}

.diff-btn {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.diff-btn:hover {
    border-color: var(--accent-orange);
    color: var(--text-primary);
}

.diff-btn.active[data-diff="easy"] {
    background: rgba(0, 230, 118, 0.15);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.diff-btn.active[data-diff="medium"] {
    background: rgba(255, 107, 53, 0.15);
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.diff-btn.active[data-diff="hard"] {
    background: rgba(255, 23, 68, 0.15);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.question-text {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.answers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.answer-btn {
    padding: 10px 12px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.answer-btn:hover:not(:disabled) {
    border-color: var(--accent-orange);
    background: rgba(255, 107, 53, 0.1);
    transform: translateY(-2px);
}

.answer-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.answer-btn.correct {
    border-color: var(--accent-green);
    background: rgba(0, 230, 118, 0.15);
    animation: pulse-green 0.5s ease;
}

.answer-btn.wrong {
    border-color: var(--accent-red);
    background: rgba(255, 23, 68, 0.15);
    animation: shake 0.5s ease;
}


/* ===== Bet Controls ===== */
.bet-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    flex-shrink: 0;
}

.bet-section {
    flex: 1;
}

.bet-label {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 600;
}

.bet-input-group {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.bet-input {
    flex: 1;
    padding: 8px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
}

.bet-input:focus {
    border-color: var(--accent-orange);
}

.bet-adjust {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.bet-adjust:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.quick-bets {
    display: flex;
    gap: 6px;
}

.quick-bet-btn {
    flex: 1;
    padding: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.quick-bet-btn:hover {
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.play-btn {
    padding: 16px 32px;
    background: var(--gradient-main);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    min-width: 160px;
}

.play-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(255, 107, 53, 0.4);
}

.play-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.play-btn-text {
    display: block;
    font-size: 16px;
    font-weight: 800;
    color: white;
}

.play-btn-sub {
    display: block;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 3px;
}

/* ===== Right Panel: Chat ===== */
.right-panel {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.chat-title {
    font-size: 14px;
    font-weight: 700;
}

.online-count {
    font-size: 11px;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    gap: 4px;
}

.online-count::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    display: inline-block;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-msg {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    animation: slideIn 0.3s ease;
}

.chat-msg-user {
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-orange);
    margin-bottom: 2px;
}

.chat-msg-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.chat-msg.system {
    background: rgba(123, 47, 247, 0.1);
    border: 1px solid rgba(123, 47, 247, 0.2);
}

.chat-msg.system .chat-msg-user {
    color: var(--accent-purple);
}

.chat-msg.win-msg {
    background: rgba(0, 230, 118, 0.1);
    border: 1px solid rgba(0, 230, 118, 0.2);
}

.chat-msg.win-msg .chat-msg-user {
    color: var(--accent-green);
}

.faith-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
}

.copyright-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    border-top: 1px solid var(--border-color);
    font-size: 10px;
    color: var(--text-muted);
    background: var(--bg-primary);
}

.faith-icon {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-purple);
}


/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    animation: scaleIn 0.3s ease;
}

.modal-icon {
    font-size: 36px;
    font-weight: 900;
    margin-bottom: 16px;
}

.modal-icon.win {
    color: var(--accent-green);
}

.modal-icon.loss {
    color: var(--accent-red);
}

.modal-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 8px;
}

.modal-message {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.modal-study-tip {
    font-size: 13px;
    color: var(--accent-purple);
    margin-bottom: 14px;
    line-height: 1.5;
    font-style: italic;
    padding: 8px 12px;
    background: rgba(123, 47, 247, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(123, 47, 247, 0.2);
    min-height: 20px;
}

.modal-points {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 24px;
}

.modal-points.win {
    color: var(--accent-green);
}

.modal-points.loss {
    color: var(--accent-red);
}

.modal-btn {
    padding: 12px 32px;
    background: var(--gradient-main);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s;
}

.modal-btn:hover {
    transform: scale(1.05);
}

/* ===== Difficulty Notification ===== */
.difficulty-notification {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--accent-purple);
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-purple);
    z-index: 999;
    animation: fadeIn 0.3s ease;
    box-shadow: 0 4px 20px rgba(123, 47, 247, 0.3);
}

.difficulty-notification.hidden {
    display: none;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 230, 118, 0.4); }
    50% { box-shadow: 0 0 20px 4px rgba(0, 230, 118, 0.2); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}


/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
    .game-container {
        grid-template-columns: 220px 1fr 220px;
    }
}

@media (max-width: 992px) {
    .game-container {
        grid-template-columns: 1fr;
        height: calc(100vh - 48px);
    }

    .left-panel, .right-panel {
        display: none;
    }

    .center-panel {
        height: 100%;
        overflow: hidden;
    }

    .multiplier-value {
        font-size: 40px;
    }

    .answers-grid {
        grid-template-columns: 1fr 1fr;
    }

    .bet-controls {
        flex-direction: row;
    }

    .play-btn {
        min-width: 140px;
    }
}

@media (max-width: 576px) {
    .top-bar {
        padding: 6px 10px;
        gap: 8px;
    }

    .logo-text {
        font-size: 14px;
    }

    .balance-display {
        padding: 4px 8px;
    }

    .balance-amount {
        font-size: 14px;
    }

    .streak-display {
        padding: 4px 8px;
    }

    .streak-value {
        font-size: 14px;
    }

    .game-container {
        height: calc(100vh - 40px);
    }

    .center-panel {
        padding: 8px;
        gap: 6px;
    }

    .game-area {
        padding: 8px;
    }

    .multiplier-value {
        font-size: 32px;
    }

    .question-area {
        padding: 8px 10px;
    }

    .question-text {
        font-size: 13px;
        margin-bottom: 8px;
    }

    .question-header {
        margin-bottom: 6px;
    }

    .diff-btn {
        padding: 3px 8px;
        font-size: 9px;
    }

    .answers-grid {
        gap: 6px;
    }

    .answer-btn {
        padding: 8px 10px;
        font-size: 12px;
    }

    .bet-controls {
        padding: 8px 10px;
        gap: 10px;
        flex-direction: row;
    }

    .bet-label {
        font-size: 10px;
        margin-bottom: 4px;
    }

    .bet-input {
        padding: 6px 8px;
        font-size: 14px;
    }

    .bet-adjust {
        padding: 6px 10px;
        font-size: 12px;
    }

    .quick-bets {
        gap: 4px;
    }

    .quick-bet-btn {
        padding: 4px;
        font-size: 11px;
    }

    .play-btn {
        padding: 12px 20px;
        min-width: 120px;
    }

    .play-btn-text {
        font-size: 13px;
    }

    .play-btn-sub {
        font-size: 9px;
    }

    .game-status {
        font-size: 10px;
        padding: 3px 8px;
    }

    .round-badge {
        padding: 2px 8px;
        font-size: 10px;
    }
}