/**
 * Cart Page Styles
 * Optimized and cached
 */

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Page Header */
.page-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px 20px;
    text-align: center;
}

.header-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    letter-spacing: -1px;
    animation: fadeInDown 0.8s ease-out;
}

.header-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease-out;
}

.header-divider {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-purple), transparent);
    margin: 0 auto;
    border-radius: 2px;
    animation: pulse 2s ease-in-out infinite;
}

/* Main Container */
.cart-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px 120px;
    animation: fadeIn 1s ease-out;
}

/* Cart Card */
.cart-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 30px;
    margin-bottom: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Cart Item */
.cart-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
    animation: slideInUp 0.5s ease-out;
}

.cart-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.3);
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.item-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.delete-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
    text-decoration: none;
    transition: all 0.2s;
    flex-shrink: 0; /* Prevents shrinking */
}

.delete-btn:hover {
    background: rgba(220, 38, 38, 0.2);
    transform: scale(1.05);
}

.delete-btn i {
    font-size: 16px;
    pointer-events: none;
}

.cart-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.item-info {
    flex: 1;
    min-width: 0;
}

/* Quantity Controls */
.quantity-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.quantity-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(15, 23, 42, 0.5);
    padding: 8px 16px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.quantity-btn {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    color: white;
    border: none;
    border-radius: 10px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.quantity-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.5);
}

.quantity-btn:active {
    transform: scale(0.95);
}

.quantity-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quantity-input {
    background: transparent;
    border: none;
    width: 60px;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    outline: none;
}

.item-total {
    font-size: 20px;
    font-weight: 800;
    color: var(--accent-green);
    text-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

/* Loading State */
.cart-item.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.cart-item.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid rgba(139, 92, 246, 0.3);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty Cart */
.empty-cart {
    text-align: center;
    padding: 80px 20px;
}

.empty-icon {
    font-size: 80px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    opacity: 0.5;
    animation: float 3s ease-in-out infinite;
}

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

.empty-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.empty-message {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Summary Card */
.summary-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: slideInUp 0.6s ease-out 0.2s both;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--glass-border);
    font-size: 16px;
}

.summary-row:last-of-type {
    border-bottom: none;
    padding-top: 20px;
    margin-top: 12px;
    border-top: 2px solid var(--glass-border);
}

.summary-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.summary-value {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 18px;
}

.summary-row:last-of-type .summary-label,
.summary-row:last-of-type .summary-value {
    font-size: 24px;
    font-weight: 800;
}

.summary-row:last-of-type .summary-value {
    background: linear-gradient(135deg, var(--accent-green), #059669);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 16px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.btn {
    flex: 1;
    min-width: 200px;
    padding: 16px 32px;
    border-radius: 16px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
    border-color: var(--accent-purple);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), #059669);
    color: white;
    border: 2px solid rgba(16, 185, 129, 0.3);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
}

.btn-primary:hover:not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.6);
}

.btn-primary.disabled {
    background: linear-gradient(135deg, #374151, #1f2937);
    cursor: not-allowed;
    opacity: 0.5;
    box-shadow: none;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 100px;
    right: 24px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 16px 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 3000;
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-success {
    border-left: 4px solid var(--accent-green);
}

.toast-error {
    border-left: 4px solid var(--accent-red);
}

/* Responsive */
@media (max-width: 768px) {
    .page-header {
        padding: 30px 16px 16px;
    }

    .cart-container {
        padding: 16px 16px 100px;
    }

    .cart-card, .summary-card {
        padding: 20px;
    }

    .cart-item {
        padding: 16px;
    }

    .quantity-wrapper {
        width: 100%;
        justify-content: center;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        min-width: 100%;
    }

    .toast {
        right: 16px;
        left: 16px;
        bottom: 90px;
    }
}

@media (max-width: 480px) {
    .cart-item-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .delete-btn {
        position: absolute;
        top: 16px;
        right: 16px;
    }

    .quantity-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .item-total {
        text-align: center;
    }
}