/* Reset and base styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --error-color: #dc2626;
    --success-color: #16a34a;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --track-color: #1e293b;
    --circle-color: #dc2626;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-user {
    color: var(--text-muted);
    font-weight: 500;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-logout {
    display: inline;
}

.btn-link {
    background: none;
    border: none;
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    font-size: 1rem;
    padding: 0;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.25rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-secondary {
    background-color: var(--text-muted);
    color: white;
}

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

.btn-secondary.btn-active {
    background-color: var(--success-color);
}

.btn-secondary.btn-active:hover {
    background-color: #15803d;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--card-bg);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.alert-error {
    background-color: #fef2f2;
    color: var(--error-color);
    border: 1px solid #fecaca;
}

.alert-success {
    background-color: #f0fdf4;
    color: var(--success-color);
    border: 1px solid #bbf7d0;
}

/* Auth pages */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.auth-container h1 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.auth-link {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-muted);
}

.auth-link a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* Settings page */
.settings-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.settings-container h1 {
    margin-bottom: 1.5rem;
}

.duration-presets {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.duration-presets span {
    color: var(--text-muted);
}

.settings-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.settings-info h3 {
    margin-bottom: 1rem;
}

.settings-info ul {
    padding-left: 1.5rem;
}

.settings-info li {
    margin-bottom: 0.5rem;
}

/* Keyboard keys */
kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

/* Game page */
.game-container {
    max-width: 1000px;
    margin: 0 auto;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

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

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 1rem;
}

.duration-display {
    color: var(--text-muted);
}

.game-stats {
    display: flex;
    gap: 1.5rem;
}

.stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-total .stat-value {
    color: var(--primary-color);
}

/* Game area */
.game-area {
    position: relative;
    background-color: var(--card-bg);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 500px;
    background-color: white;
}

/* Overlays */
#countdown-overlay,
#result-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10;
}

#countdown-text {
    font-size: 8rem;
    font-weight: 700;
    color: white;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.result-content {
    background-color: var(--card-bg);
    padding: 2rem 3rem;
    border-radius: 1rem;
    text-align: center;
}

.result-content h2 {
    margin-bottom: 1.5rem;
}

.result-stats {
    margin-bottom: 1.5rem;
}

.result-stats p {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.result-total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.hidden {
    display: none !important;
}

/* Game instructions */
.game-instructions {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.game-instructions h3 {
    margin-bottom: 1rem;
}

.instruction-columns {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
}

.instruction-col {
    flex: 1;
}

.instruction-col h4 {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
}

.instruction-col p {
    margin-bottom: 0.25rem;
}

.instruction-note {
    color: var(--text-muted);
    font-style: italic;
}

/* Recent scores */
.recent-scores {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.recent-scores h3 {
    margin-bottom: 1rem;
}

.scores-table {
    width: 100%;
    border-collapse: collapse;
}

.scores-table th,
.scores-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.scores-table th {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
}

.scores-table tbody tr:hover {
    background-color: var(--bg-color);
}

/* Gamepad status indicator */
.gamepad-status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.25rem;
    text-transform: uppercase;
}

.gamepad-status.connected {
    background-color: #dcfce7;
    color: var(--success-color);
}

.gamepad-status.disconnected {
    background-color: #fee2e2;
    color: var(--error-color);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .game-header {
        flex-direction: column;
    }

    .game-stats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .instruction-columns {
        flex-direction: column;
        gap: 1rem;
    }

    #game-canvas {
        height: 400px;
    }
}