/* ===== MULTIPLAYER.CSS - Game Mode & Room Styles ===== */

/* ====== GAME MODE SELECTION ====== */
.game-mode-selection,
.multiplayer-options,
.create-room,
.join-room,
.room-lobby {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    text-align: center;
}

.game-mode-selection h2,
.multiplayer-options h2,
.create-room h2,
.join-room h2 {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    color: var(--text-gold);
    margin-bottom: var(--spacing-xl);
}

/* Game Mode Cards */
.game-modes,
.mp-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.game-mode-card,
.mp-option-card {
    background: var(--glass-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.game-mode-card::before,
.mp-option-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--vn-gold-dark), var(--vn-gold), var(--vn-gold-dark));
    opacity: 0;
    transition: var(--transition-fast);
}

.game-mode-card:hover,
.mp-option-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-8px);
    box-shadow: var(--shadow-gold);
}

.game-mode-card:hover::before,
.mp-option-card:hover::before {
    opacity: 1;
}

.mode-icon,
.option-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.game-mode-card h3,
.mp-option-card h3 {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.game-mode-card p,
.mp-option-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ====== CREATE/JOIN ROOM FORMS ====== */
.create-room-form,
.join-room-form {
    max-width: 400px;
    margin: 0 auto var(--spacing-xl);
}

.input-group {
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.input-group label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.input-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    transition: var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--vn-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

.or-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
}

.or-divider::before,
.or-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.or-divider span {
    padding: 0 var(--spacing-md);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ====== ROOM LOBBY ====== */
.room-lobby {
    text-align: left;
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.room-header h2 {
    margin: 0;
}

.room-code-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-tertiary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-gold);
}

.room-code-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.room-code {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-gold);
    letter-spacing: 4px;
}

.room-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

/* Players Section */
.room-players-section,
.room-invite-section {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.room-players-section h3,
.room-invite-section h3 {
    color: var(--text-gold);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.room-players-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 300px;
    overflow-y: auto;
}

.room-player-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: var(--transition-fast);
}

.room-player-item.ready {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
}

.player-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-sm);
}

.player-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.player-name {
    font-weight: 600;
    color: var(--text-primary);
}

.player-status {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.room-player-item.ready .player-status {
    color: var(--success-color);
}

.btn-kick {
    opacity: 0.5;
    transition: var(--transition-fast);
}

.btn-kick:hover {
    opacity: 1;
    color: var(--danger-color);
}

.ready-toggle {
    margin-top: var(--spacing-lg);
    text-align: center;
}

/* Invite Section */
.qr-code-container {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.qr-code {
    width: 180px;
    height: 180px;
    border-radius: var(--border-radius);
    border: 4px solid white;
    box-shadow: var(--shadow-md);
}

.qr-hint {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

.invite-link-container {
    display: flex;
    gap: var(--spacing-sm);
}

.invite-link-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-copy-link {
    white-space: nowrap;
}

/* Room Actions */
.room-actions {
    text-align: center;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.start-hint,
.waiting-hint {
    color: var(--text-secondary);
    margin: var(--spacing-md) 0;
}

/* ====== QR SCANNER ====== */
.qr-scanner-modal {
    text-align: center;
    padding: var(--spacing-lg);
}

.qr-scanner-modal h3 {
    color: var(--text-gold);
    margin-bottom: var(--spacing-lg);
}

.qr-scanner-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto var(--spacing-lg);
    aspect-ratio: 1;
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

#qr-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
}

.qr-frame {
    width: 200px;
    height: 200px;
    border: 3px solid var(--vn-gold);
    border-radius: var(--border-radius);
    box-shadow: 0 0 0 1000px rgba(0, 0, 0, 0.5);
    animation: qrPulse 2s infinite;
}

@keyframes qrPulse {
    0%, 100% { border-color: var(--vn-gold); }
    50% { border-color: var(--vn-gold-light); }
}

.scanner-hint {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
    .room-content {
        grid-template-columns: 1fr;
    }
    
    .game-modes {
        grid-template-columns: 1fr;
    }
    
    .room-header {
        flex-direction: column;
        text-align: center;
    }
    
    .room-code {
        font-size: var(--font-size-xl);
    }
    
    .invite-link-container {
        flex-direction: column;
    }
    
    .qr-code {
        width: 150px;
        height: 150px;
    }
}

/* ====== ANIMATIONS ====== */
.game-mode-card,
.mp-option-card {
    animation: fadeInUp 0.5s ease-out backwards;
}

.game-mode-card:nth-child(1) { animation-delay: 0.1s; }
.game-mode-card:nth-child(2) { animation-delay: 0.2s; }
.game-mode-card:nth-child(3) { animation-delay: 0.3s; }

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

/* ====== BTN SUCCESS ====== */
.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    border: none;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--success-glow);
}