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

:root {
    --bg-dark: #0f212e;
    --bg-card: #1a2c38;
    --bg-input: #0f212e;
    --bg-lighter: #243442;
    --accent: #00e701;
    --accent-glow: rgba(0, 231, 1, 0.3);
    --accent-dim: #00b300;
    --gold: #ffd700;
    --text: #ffffff;
    --text-dim: #b1bad3;
    --win: #00e701;
    --lose: #ed4163;
    --partial: #ffc000;
    --border: #2f4553;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 16px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--bg-card);
    border-radius: 10px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

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

.logo-icon {
    font-size: 24px;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent-glow);
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 3px;
    background: linear-gradient(135deg, var(--accent), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.balance-display {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-input);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.balance-label {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.balance-amount {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

/* Game Area */
.game-area {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 16px;
}

@media (max-width: 900px) {
    .game-area {
        grid-template-columns: 1fr;
    }
}

/* Controls Panel */
.controls-panel {
    background: var(--bg-card);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border: 1px solid var(--border);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Difficulty Tabs */
.difficulty-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-input);
    border-radius: 6px;
    padding: 4px;
}

.diff-tab {
    flex: 1;
    padding: 10px 4px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.diff-tab:hover {
    color: var(--text);
    background: var(--bg-lighter);
}

.diff-tab.active {
    background: var(--accent);
    color: var(--bg-dark);
    box-shadow: 0 2px 10px var(--accent-glow);
}

/* Payout Table */
.payout-table {
    background: var(--bg-input);
    border-radius: 6px;
    padding: 10px;
    font-size: 11px;
    border: 1px solid var(--border);
}

.payout-header {
    display: flex;
    justify-content: space-between;
    padding-bottom: 8px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.payout-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 0;
    border-radius: 4px;
    transition: background 0.15s;
}

.payout-row:hover {
    background: var(--bg-lighter);
}

.payout-row.win { color: var(--win); }
.payout-row.partial { color: var(--partial); }
.payout-row.lose { color: var(--lose); }

.payout-emoji { width: 18px; font-size: 12px; }
.payout-name { flex: 1; font-weight: 700; }
.payout-dist { color: var(--text-dim); font-size: 10px; min-width: 40px; }
.payout-mult { font-weight: 800; width: 40px; text-align: right; }

/* Bet Input */
.bet-input-group {
    display: flex;
    align-items: center;
    background: var(--bg-input);
    border-radius: 6px;
    border: 2px solid var(--border);
    transition: border-color 0.2s;
}

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

.currency {
    color: var(--text-dim);
    font-size: 14px;
    padding-left: 12px;
    font-weight: 600;
}

.bet-input-group input[type="number"] {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
    padding: 12px 8px;
    outline: none;
    min-width: 0;
}

.bet-buttons {
    display: flex;
    border-left: 1px solid var(--border);
}

.bet-buttons button {
    background: transparent;
    border: none;
    color: var(--text-dim);
    padding: 12px 14px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    transition: all 0.15s;
}

.bet-buttons button:hover {
    background: var(--bg-lighter);
    color: var(--text);
}

.bet-buttons button:first-child {
    border-right: 1px solid var(--border);
}

/* Number Picker */
.number-picker {
    display: flex;
    gap: 10px;
    align-items: center;
}

.slider-container {
    flex: 1;
    position: relative;
    padding: 10px 0;
}

.slider-track {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.slider-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-dim));
    border-radius: 4px;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--accent-glow);
}

.number-picker input[type="range"] {
    position: relative;
    width: 100%;
    height: 30px;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    outline: none;
    cursor: pointer;
    z-index: 2;
}

.number-picker input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #fff, #e0e0e0);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px var(--shadow), 0 0 0 3px var(--accent);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.number-picker input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 12px var(--shadow), 0 0 0 4px var(--accent), 0 0 20px var(--accent-glow);
}

.number-picker input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #fff, #e0e0e0);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px var(--shadow), 0 0 0 3px var(--accent);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 10px;
    color: var(--text-dim);
}

.number-picker input[type="number"] {
    width: 70px;
    background: var(--bg-input);
    border: 2px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 20px;
    font-weight: 800;
    text-align: center;
    padding: 10px 6px;
    outline: none;
    transition: border-color 0.2s ease;
}

.number-picker input[type="number"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.number-picker input[type="number"]::-webkit-inner-spin-button,
.number-picker input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Play Button */
.play-button {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    border: none;
    color: var(--bg-dark);
    font-size: 14px;
    font-weight: 800;
    padding: 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.play-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--accent-glow);
}

.play-button:active {
    transform: translateY(0);
}

.play-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Result Display */
.result-display {
    background: var(--bg-input);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    border: 2px solid var(--border);
    animation: resultPop 0.3s ease;
}

@keyframes resultPop {
    0% { transform: scale(0.9); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.result-display.win { 
    border-color: var(--win); 
    background: linear-gradient(135deg, rgba(0, 231, 1, 0.1), transparent);
    box-shadow: 0 0 30px rgba(0, 231, 1, 0.2);
}
.result-display.partial { 
    border-color: var(--partial); 
    background: linear-gradient(135deg, rgba(255, 192, 0, 0.1), transparent);
}
.result-display.lose { 
    border-color: var(--lose); 
    background: linear-gradient(135deg, rgba(237, 65, 99, 0.1), transparent);
}

.result-emoji {
    font-size: 40px;
    margin-bottom: 4px;
    animation: bounce 0.5s ease;
}

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

.result-tier {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.result-info {
    display: flex;
    justify-content: center;
    gap: 16px;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 10px;
}

.result-payout {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 10px;
}

.result-payout .multiplier {
    font-size: 24px;
    font-weight: 800;
}

.result-payout .profit {
    font-size: 18px;
    font-weight: 700;
}

.profit.win { color: var(--win); text-shadow: 0 0 10px var(--accent-glow); }
.profit.lose { color: var(--lose); }
.profit.even { color: var(--text-dim); }

/* Game Panel */
.game-panel {
    background: var(--bg-card);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    border: 1px solid var(--border);
}

/* Number Line */
.number-line-container {
    background: var(--bg-input);
    border-radius: 8px;
    padding: 40px 20px 24px;
    border: 1px solid var(--border);
}

.number-line {
    position: relative;
    height: 50px;
    background: linear-gradient(90deg, var(--bg-lighter), var(--bg-card), var(--bg-lighter));
    border-radius: 25px;
    border: 2px solid var(--border);
    box-shadow: inset 0 2px 10px var(--shadow);
}

.player-marker {
    position: absolute;
    top: -28px;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: left 0.15s ease;
    z-index: 10;
}

.player-marker::before {
    content: attr(data-value);
    background: var(--accent);
    color: var(--bg-dark);
    font-size: 12px;
    font-weight: 800;
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 4px;
    box-shadow: 0 2px 10px var(--accent-glow);
}

.player-marker::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--accent);
}

.echo-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--bg-lighter), var(--bg-dark));
    border: 2px solid var(--text-dim);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 800;
    animation: echoLand 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 15px var(--shadow);
}

.echo-marker.closest {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow), 0 4px 15px var(--shadow);
    background: linear-gradient(135deg, rgba(0, 231, 1, 0.2), var(--bg-dark));
    transform: translate(-50%, -50%) scale(1.1);
}

@keyframes echoLand {
    0% {
        opacity: 0;
        transform: translate(-50%, -150%) scale(0.5);
    }
    60% {
        transform: translate(-50%, -40%) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.number-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    font-size: 11px;
    color: var(--text-dim);
    font-weight: 600;
}

/* Echo Display */
.echo-display {
    background: var(--bg-input);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border);
}

.echo-title {
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 12px;
    letter-spacing: 3px;
    font-weight: 700;
}

.echo-balls {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    min-height: 56px;
    align-items: center;
}

.echo-ball {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--bg-lighter), var(--bg-dark));
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 4px 15px var(--shadow);
    transition: all 0.3s ease;
}

.echo-ball.dropping {
    animation: ballDrop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.echo-ball.closest {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 25px var(--accent-glow), 0 4px 15px var(--shadow);
    background: linear-gradient(135deg, rgba(0, 231, 1, 0.15), var(--bg-dark));
    transform: scale(1.1);
}

@keyframes ballDrop {
    0% {
        opacity: 0;
        transform: translateY(-40px) scale(0.3);
    }
    60% {
        transform: translateY(5px) scale(1.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* History */
.history-panel {
    background: var(--bg-input);
    border-radius: 8px;
    padding: 12px;
    border: 1px solid var(--border);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.fairness-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 6px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    transition: all 0.15s;
}

.fairness-btn:hover {
    background: var(--bg-lighter);
    color: var(--text);
    border-color: var(--text-dim);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 180px;
    overflow-y: auto;
}

.history-list::-webkit-scrollbar {
    width: 4px;
}

.history-list::-webkit-scrollbar-track {
    background: var(--bg-dark);
    border-radius: 2px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--bg-card);
    border-radius: 4px;
    font-size: 11px;
    border-left: 3px solid var(--border);
    transition: background 0.15s;
}

.history-item:hover {
    background: var(--bg-lighter);
}

.history-item.win { border-left-color: var(--win); }
.history-item.partial { border-left-color: var(--partial); }
.history-item.lose { border-left-color: var(--lose); }

.history-emoji { font-size: 12px; }
.history-num { font-weight: 800; color: var(--accent); min-width: 24px; }
.history-echoes { color: var(--text-dim); font-size: 10px; flex: 1; }
.history-dist { color: var(--text-dim); }
.history-mult { font-weight: 800; min-width: 32px; text-align: right; }
.history-item.win .history-mult { color: var(--win); }
.history-item.lose .history-mult { color: var(--lose); }

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    width: 90%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(-20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 16px;
    font-weight: 700;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.15s;
}

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

.modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.fairness-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.fairness-section label {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.seed-display {
    display: flex;
    gap: 6px;
}

.seed-display input,
.fairness-section > input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 10px 12px;
    font-size: 11px;
    font-family: 'SF Mono', Monaco, monospace;
    outline: none;
}

.seed-display input:focus,
.fairness-section > input:focus {
    border-color: var(--accent);
}

.seed-display button {
    background: var(--bg-lighter);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.15s;
}

.seed-display button:hover {
    background: var(--border);
}

.rotate-btn {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    border: none;
    color: var(--bg-dark);
    padding: 12px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    margin-top: 6px;
    transition: all 0.15s;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.rotate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.verification-result {
    background: var(--bg-input);
    border-radius: 6px;
    padding: 14px;
    border: 1px solid var(--border);
}

.revealed-seed {
    margin-bottom: 10px;
}

.revealed-seed label {
    display: block;
    font-size: 10px;
    color: var(--text-dim);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.revealed-seed input {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    padding: 8px 10px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 10px;
}

.verify-status {
    font-size: 13px;
    font-weight: 700;
}

.verify-status.success { color: var(--win); }
.verify-status.error { color: var(--lose); }

/* Utility */
.hidden {
    display: none !important;
}

/* Scrollbar for whole page */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

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