/**
 * Cart Modal — Premium SaaS 2026
 * Strict, elegant design with subtle neon accents
 * No blur/backdrop-filter (project rule)
 */

/* ============================================
   VARIABLES — Premium Dark Theme
============================================ */
:root {
    --cm-bg-overlay: rgba(15, 23, 42, 0.85);
    --cm-bg-modal: #ffffff;
    --cm-bg-surface: #f8fafc;
    --cm-bg-hover: #f1f5f9;
    
    --cm-text-primary: #0f172a;
    --cm-text-secondary: #64748b;
    --cm-text-muted: #94a3b8;
    
    --cm-border: #e2e8f0;
    --cm-border-light: #f1f5f9;
    
    --cm-accent: #10b981;
    --cm-accent-glow: rgba(16, 185, 129, 0.15);
    --cm-accent-soft: rgba(16, 185, 129, 0.08);
    
    --cm-neon-glow: 0 0 20px rgba(16, 185, 129, 0.3), 0 0 40px rgba(16, 185, 129, 0.1);
    
    --cm-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --cm-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --cm-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --cm-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.2);
    
    --cm-radius-sm: 8px;
    --cm-radius-md: 12px;
    --cm-radius-lg: 16px;
    --cm-radius-xl: 20px;
    
    --cm-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --cm-transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   OVERLAY
============================================ */
.cm-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--cm-bg-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--cm-transition), visibility var(--cm-transition);
}

.cm-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.cm-overlay.is-open .cm-modal {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* ============================================
   MODAL CONTAINER
============================================ */
.cm-modal {
    position: relative;
    width: 100%;
    max-width: 680px;
    max-height: calc(100vh - 48px);
    overflow: hidden;
    background: var(--cm-bg-modal);
    border-radius: var(--cm-radius-xl);
    box-shadow: var(--cm-shadow-xl);
    opacity: 0;
    transform: translateY(20px) scale(0.98);
    transition: 
        opacity var(--cm-transition),
        transform var(--cm-transition-bounce);
}

/* Subtle top accent line — neon glow */
.cm-modal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--cm-accent), transparent);
    border-radius: 0 0 4px 4px;
    box-shadow: var(--cm-neon-glow);
}

/* ============================================
   HEADER
============================================ */
.cm-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 24px 28px 20px;
    border-bottom: 1px solid var(--cm-border-light);
}

.cm-header__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--cm-accent-soft);
    border-radius: 50%;
    color: var(--cm-accent);
}

.cm-header__icon svg {
    width: 14px;
    height: 14px;
}

@keyframes cmPulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--cm-accent-glow); }
    50% { box-shadow: 0 0 0 8px transparent; }
}

.cm-header__text {
    flex: 1;
}

.cm-header__title {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    color: var(--cm-text-primary);
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.cm-header__subtitle {
    margin: 6px 0 0;
    font-size: 14px;
    color: var(--cm-accent);
    font-weight: 400;
}

.cm-header__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-left: auto;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--cm-radius-sm);
    color: var(--cm-text-muted);
    cursor: pointer;
    transition: background var(--cm-transition), color var(--cm-transition);
}

.cm-header__close:hover {
    background: var(--cm-bg-hover);
    color: var(--cm-text-primary);
}

.cm-header__close svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   TABLE HEADER (Labels)
============================================ */
.cm-labels {
    display: grid;
    grid-template-columns: 60px 1fr 100px 90px 100px;
    gap: 12px;
    align-items: center;
    padding: 14px 24px;
    background: var(--cm-bg-surface);
    border-bottom: 1px solid var(--cm-border);
}

.cm-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cm-text-muted);
}

.cm-label--right {
    text-align: right;
}

.cm-label--center {
    text-align: center;
}

/* ============================================
   PRODUCT ROW
============================================ */
.cm-product {
    display: grid;
    grid-template-columns: 60px 1fr 100px 90px 100px;
    gap: 12px;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--cm-border-light);
    transition: background var(--cm-transition);
}

.cm-product:hover {
    background: var(--cm-bg-surface);
}

/* Product Image */
.cm-product__image {
    width: 60px;
    height: 60px;
    border-radius: var(--cm-radius-sm);
    overflow: hidden;
    background: var(--cm-bg-surface);
    border: 1px solid var(--cm-border-light);
}

.cm-product__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Product Name */
.cm-product__name {
    font-size: 14px;
    font-weight: 500;
    color: var(--cm-text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cm-product__brand {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--cm-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 2px;
}

/* Product Price */
.cm-product__price {
    font-size: 14px;
    font-weight: 600;
    color: var(--cm-text-primary);
    text-align: right;
}

/* Quantity Controls */
.cm-product__qty {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.cm-qty-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    background: var(--cm-bg-surface);
    border: 1px solid var(--cm-border);
    color: var(--cm-text-secondary);
    cursor: pointer;
    transition: all var(--cm-transition);
}

.cm-qty-btn:first-child {
    border-radius: var(--cm-radius-sm) 0 0 var(--cm-radius-sm);
}

.cm-qty-btn:last-child {
    border-radius: 0 var(--cm-radius-sm) var(--cm-radius-sm) 0;
}

.cm-qty-btn:hover {
    background: var(--cm-accent-soft);
    border-color: var(--cm-accent);
    color: var(--cm-accent);
}

.cm-qty-btn svg {
    width: 14px;
    height: 14px;
}

.cm-qty-value {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 28px;
    padding: 0 8px;
    background: var(--cm-bg-modal);
    border-top: 1px solid var(--cm-border);
    border-bottom: 1px solid var(--cm-border);
    font-size: 14px;
    font-weight: 600;
    color: var(--cm-text-primary);
}

/* Product Sum */
.cm-product__sum {
    font-size: 15px;
    font-weight: 700;
    color: var(--cm-text-primary);
    text-align: right;
}

/* ============================================
   TOTAL SECTION
============================================ */
.cm-total {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: linear-gradient(180deg, var(--cm-bg-surface) 0%, var(--cm-bg-modal) 100%);
    border-top: 1px solid var(--cm-border);
}

.cm-total__label {
    font-size: 15px;
    font-weight: 500;
    color: var(--cm-text-secondary);
}

.cm-total__value {
    font-size: 22px;
    font-weight: 700;
    color: var(--cm-text-primary);
    letter-spacing: -0.02em;
}

.cm-total__value::after {
    content: ' ₽';
    font-weight: 500;
}

/* ============================================
   ACTIONS
============================================ */
.cm-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 20px 24px 24px;
}

.cm-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 20px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--cm-radius-md);
    cursor: pointer;
    transition: all var(--cm-transition);
}

.cm-btn svg {
    width: 18px;
    height: 18px;
}

/* Continue Shopping — Secondary light */
.cm-btn--secondary {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(226, 232, 240, 0.8);
    color: #64748b;
}

.cm-btn--secondary:hover {
    background: rgba(248, 250, 252, 1);
    border-color: rgba(148, 163, 184, 0.6);
    color: #475569;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
}

/* Checkout — Primary transparent with accent border */
.cm-btn--primary {
    position: relative;
    background: rgba(16, 185, 129, 0.08);
    border: 1.5px solid rgba(16, 185, 129, 0.5);
    color: #059669;
    overflow: hidden;
}

/* Subtle shimmer animation */
.cm-btn--primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(16, 185, 129, 0.1),
        transparent
    );
    animation: cmShimmer 3s ease-in-out infinite;
}

@keyframes cmShimmer {
    0%, 100% { left: -100%; }
    50% { left: 100%; }
}

.cm-btn--primary:hover {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.7);
    color: #047857;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.2);
    transform: translateY(-1px);
}

/* ============================================
   SUCCESS STATE (after adding)
============================================ */
.cm-success-check {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    margin-top: 2px;
    background: var(--cm-accent);
    border-radius: 50%;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.cm-success-check svg {
    width: 16px;
    height: 16px;
    stroke-width: 3;
}

@keyframes cmCheckIn {
    0% { transform: scale(0) rotate(-45deg); }
    100% { transform: scale(1) rotate(0deg); }
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 600px) {
    .cm-overlay {
        padding: 16px;
    }
    
    .cm-modal {
        max-width: 100%;
    }
    
    .cm-labels {
        display: none;
    }
    
    .cm-product {
        grid-template-columns: 56px 1fr;
        grid-template-rows: auto auto;
        gap: 8px 12px;
        padding: 16px 20px;
    }
    
    .cm-product__image {
        width: 56px;
        height: 56px;
        grid-row: span 2;
    }
    
    .cm-product__name {
        grid-column: 2;
    }
    
    .cm-product__info-mobile {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        grid-column: 2;
    }
    
    .cm-product__price,
    .cm-product__qty,
    .cm-product__sum {
        /* On mobile these are inside info-mobile wrapper in JS */
    }
    
    .cm-header {
        padding: 20px;
    }
    
    .cm-total {
        padding: 16px 20px;
    }
    
    .cm-actions {
        grid-template-columns: 1fr;
        padding: 16px 20px 20px;
    }
    
    .cm-btn {
        height: 52px;
    }
}

/* ============================================
   REDUCED MOTION
============================================ */
@media (prefers-reduced-motion: reduce) {
    .cm-overlay,
    .cm-modal,
    .cm-header__icon,
    .cm-btn,
    .cm-qty-btn,
    .cm-product,
    .cm-success-check {
        animation: none;
        transition: none;
    }
}