:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #ecf0f1;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --table-color: #27ae60;
    --card-color: #fff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    line-height: 1.6;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Landing Screen */
#landing-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: opacity 0.3s ease;
}

#landing-screen.hidden {
    display: none;
}

.primary-button {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    background-color: var(--accent-color);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.primary-button:hover {
    transform: translateY(-2px);
    background-color: #2980b9;
}

/* Game Interface */
#game-interface {
    display: grid;
    grid-template-columns: auto 1fr;
    min-height: 100vh;
}

#game-interface.hidden {
    display: none;
}

/* Sidebar */
#sidebar {
    background-color: var(--secondary-color);
    padding: 1rem;
    width: 250px;
    transition: transform 0.3s ease;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

.menu-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mode-button {
    padding: 0.8rem;
    background: none;
    border: none;
    color: var(--text-color);
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.mode-button:hover,
.mode-button.active {
    background-color: var(--accent-color);
}

/* Main Content */
#main-content {
    padding: 2rem;
    display: grid;
    grid-template-rows: 1fr auto auto;
    gap: 2rem;
}

/* Poker Table */
#poker-table {
    background-color: var(--table-color);
    border-radius: 200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 400px;
    position: relative;
}

.community-cards,
.player-hand,
.ai-hand {
    display: flex;
    gap: 1rem;
}

/* Action Controls */
#action-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    padding: 1rem;
}

#action-controls button {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

#fold-btn {
    background-color: var(--error-color);
    color: var(--text-color);
}

#call-btn {
    background-color: var(--accent-color);
    color: var(--text-color);
}

#raise-btn {
    background-color: var(--success-color);
    color: var(--text-color);
}

.raise-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* GTO Panel */
#gto-panel {
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 5px;
}

/* Stats Panel */
#stats-panel {
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 5px;
}

#stats-panel.hidden {
    display: none;
}

/* Card Styles */
.card {
    width: 60px;
    height: 90px;
    background-color: var(--card-color);
    border-radius: 5px;
    padding: 5px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    margin: 0 5px;
}

.card-value {
    font-size: 1.2rem;
    font-weight: bold;
}

.card-suit {
    font-size: 1.5rem;
    text-align: center;
}

/* Position Indicator */
.position-indicator {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9rem;
}

/* Stats Display */
.stat-item {
    background-color: var(--primary-color);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.stat-item h4 {
    margin-bottom: 0.5rem;
    color: var(--accent-color);
}

.position-stat {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--secondary-color);
}

/* Decision Results */
.decision-result {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 1rem 2rem;
    border-radius: 5px;
    font-size: 1.5rem;
    font-weight: bold;
    animation: fadeInOut 2s ease-in-out;
}

.decision-result.correct {
    background-color: var(--success-color);
    color: var(--text-color);
}

.decision-result.incorrect {
    background-color: var(--error-color);
    color: var(--text-color);
}

@keyframes fadeInOut {
    0% { opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}

/* Raise Controls */
.raise-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 5px;
}

#raise-slider {
    flex: 1;
    height: 5px;
    -webkit-appearance: none;
    background: var(--accent-color);
    border-radius: 5px;
    outline: none;
}

#raise-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--text-color);
    border-radius: 50%;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    #game-interface {
        grid-template-columns: 1fr;
    }

    #sidebar {
        position: fixed;
        left: -250px;
        top: 0;
        bottom: 0;
        z-index: 1000;
    }

    #sidebar.active {
        transform: translateX(250px);
    }

    .menu-toggle {
        display: block;
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 1001;
    }

    #poker-table {
        border-radius: 100px;
        min-height: 300px;
    }

    #action-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .raise-controls {
        flex-direction: column;
    }

    .card {
        width: 45px;
        height: 68px;
    }

    .card-value {
        font-size: 1rem;
    }

    .card-suit {
        font-size: 1.2rem;
    }

    .stat-item {
        padding: 0.8rem;
    }
}

/* Mode Panels */
.mode-panel {
    background: var(--secondary-color);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}
.mode-panel.hidden {
    display: none;
}

/* Decision Drills */
#drill-hand {
    margin-bottom: 1rem;
}
#drill-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}
.drill-btn {
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 5px;
    background: var(--accent-color);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}
.drill-btn:hover {
    background: #2980b9;
}
.drill-result.correct {
    color: var(--success-color);
    font-weight: bold;
}
.drill-result.incorrect {
    color: var(--error-color);
    font-weight: bold;
}

/* Range Trainer */
.range-table {
    border-collapse: collapse;
    margin: 1rem 0;
}
.range-table td {
    width: 32px;
    height: 32px;
    text-align: center;
    border: 1px solid var(--primary-color);
    cursor: pointer;
    font-size: 0.85rem;
    background: var(--card-color);
    color: var(--primary-color);
    transition: background 0.2s, color 0.2s;
}
.range-table td.selected {
    background: var(--accent-color);
    color: var(--text-color);
}
#range-result {
    margin-top: 1rem;
    font-size: 1.1rem;
}

/* Hand History Table */
.history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background: var(--primary-color);
    color: var(--text-color);
}
.history-table th, .history-table td {
    border: 1px solid var(--secondary-color);
    padding: 0.5rem 0.7rem;
    text-align: center;
}
.history-table th {
    background: var(--secondary-color);
    color: var(--accent-color);
}

.drill-hand-cards {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    margin: 1rem 0;
}

.secondary-button {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 1rem;
    transition: background 0.2s, color 0.2s;
}
.secondary-button:hover {
    background-color: var(--accent-color);
    color: var(--text-color);
}