/**
 * Cart Page — Premium UI
 * Design tokens from DHD Cloud design-system.css
 */

/* =====================================================
   1. HERO
   ===================================================== */
.cart-hero {
    position: relative;
    background: var(--color-bg-dark);
    padding: 64px 0 48px;
    overflow: hidden;
}

.cart-hero__bg {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(37, 99, 235, 0.15) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse 70% 100% at 50% 0%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 100% at 50% 0%, black 30%, transparent 100%);
}

.cart-hero__content {
    position: relative;
    z-index: 1;
}

.cart-hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border: 1px solid rgba(37, 99, 235, 0.45);
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--color-secondary);
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    margin-bottom: 16px;
}

.cart-hero__title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: var(--fw-bold);
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.2;
}

.cart-hero__sub {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.45);
    margin: 0;
}

/* =====================================================
   2. MAIN SECTION
   ===================================================== */
.cart-main {
    padding: 40px 0 80px;
    background: var(--color-bg-alt);
    min-height: 60vh;
}

/* =====================================================
   3. EMPTY STATE
   ===================================================== */
.cart-empty {
    max-width: 480px;
    margin: 40px auto;
    text-align: center;
    padding: 64px 40px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
}

.cart-empty__icon {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--color-text-light);
}

.cart-empty__title {
    font-size: var(--text-2xl);
    font-weight: var(--fw-bold);
    color: var(--color-text);
    margin-bottom: 8px;
}

.cart-empty__sub {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: 32px;
    line-height: 1.6;
}

.cart-empty__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--border-radius-full);
    font-weight: var(--fw-semibold);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: background var(--transition-base), transform var(--transition-base);
}

.cart-empty__cta:hover {
    background: var(--color-primary-hover);
    color: #fff;
    transform: translateY(-1px);
}

/* =====================================================
   4. LAYOUT GRID
   ===================================================== */
.cart-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 24px;
    align-items: start;
}

.cart-summary-col {
    position: sticky;
    top: calc(var(--navbar-height) + 20px);
}

/* =====================================================
   5. ITEMS COLUMN
   ===================================================== */
.cart-items-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.cart-items-header__title {
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.cart-items-header__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 999px;
    font-size: var(--text-xs);
    font-weight: var(--fw-bold);
}

/* =====================================================
   6. CART CARD
   ===================================================== */
.cart-items-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cart-card {
    display: grid;
    grid-template-columns: 48px 1fr auto;
    gap: 16px;
    align-items: start;
    padding: 20px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.cart-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

/* Exit animation */
.cart-card--exit {
    opacity: 0;
    transform: translateX(-16px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Loading state */
.cart-card--loading {
    pointer-events: none;
    opacity: 0.6;
}

.cart-card--loading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40%;
    height: 2px;
    background: var(--color-primary);
    animation: cartLoadBar 0.8s ease infinite alternate;
}

@keyframes cartLoadBar {
    from { width: 20%; }
    to   { width: 90%; }
}

/* Icon */
.cart-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-lg);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Info */
.cart-card__info {
    min-width: 0;
}

.cart-card__name {
    font-size: var(--text-base);
    font-weight: var(--fw-semibold);
    color: var(--color-text);
    margin: 0 0 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cart-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0 0 12px;
    line-height: 1.5;
}

/* Specs (custom VPS) */
.cart-card__specs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.cart-card__spec {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 11px;
    font-weight: var(--fw-medium);
    color: var(--color-text-muted);
}

/* Billing row */
.cart-card__billing {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.cart-card__billing-icon {
    color: var(--color-text-light);
    flex-shrink: 0;
}

.cart-card__billing-label {
    font-size: var(--text-xs);
    color: var(--color-text-light);
    font-weight: var(--fw-medium);
    white-space: nowrap;
    margin: 0;
}

.cart-select {
    height: 32px;
    padding: 0 28px 0 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2394A3B8'/%3E%3C/svg%3E") no-repeat right 8px center;
    background-size: 10px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    font-size: var(--text-xs);
    font-weight: var(--fw-medium);
    color: var(--color-text);
    font-family: var(--font-body);
    cursor: pointer;
    transition: border-color var(--transition-fast);
    outline: none;
    min-width: 140px;
}

.cart-select:hover {
    border-color: var(--color-primary);
}

.cart-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.cart-select:disabled {
    opacity: 0.5;
    cursor: wait;
}

.cart-card__discount-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--color-success-light);
    color: var(--color-success);
    border-radius: 999px;
    font-size: 11px;
    font-weight: var(--fw-bold);
}

/* Price column */
.cart-card__price-col {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    min-width: 120px;
}

.cart-card__price {
    text-align: right;
}

.cart-card__price-month {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: 2px;
}

.cart-card__price-total {
    display: block;
    font-size: var(--text-xl);
    font-weight: var(--fw-bold);
    color: var(--color-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}

.cart-card__price-unit {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-text-light);
    margin-top: 2px;
}

/* Remove button */
.cart-card__remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: transparent;
    color: var(--color-text-light);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
    flex-shrink: 0;
}

.cart-card__remove:hover {
    border-color: var(--color-error);
    color: var(--color-error);
    background: var(--color-error-light);
}

.cart-card__remove:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Continue link */
.cart-continue {
    margin-top: 16px;
}

.cart-continue__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: var(--fw-medium);
    transition: color var(--transition-fast);
}

.cart-continue__link:hover {
    color: var(--color-primary);
}

/* =====================================================
   7. ORDER SUMMARY PANEL (dark)
   ===================================================== */
.cart-summary {
    background: var(--color-bg-dark);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.cart-summary__title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 20px 22px 16px;
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* Coupon */
.cart-coupon {
    padding: 16px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cart-coupon__label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
    cursor: default;
}

.cart-coupon__row {
    display: flex;
    gap: 6px;
}

.cart-coupon__input {
    flex: 1;
    height: 36px;
    padding: 0 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: #fff;
    font-size: var(--text-xs);
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--transition-fast);
    min-width: 0;
}

.cart-coupon__input::placeholder {
    color: rgba(255, 255, 255, 0.25);
}

.cart-coupon__input:focus {
    border-color: var(--color-primary);
    background: rgba(37, 99, 235, 0.08);
}

.cart-coupon__btn {
    height: 36px;
    padding: 0 14px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--text-xs);
    font-weight: var(--fw-semibold);
    font-family: var(--font-body);
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
}

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

.cart-coupon__btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.cart-coupon__msg {
    margin-top: 6px;
    font-size: 11px;
    min-height: 16px;
}

.cart-coupon__msg--error {
    color: #f87171;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.cart-coupon__msg--success {
    color: #4ade80;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Line items */
.cart-summary__lines {
    list-style: none;
    padding: 16px 22px;
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cart-summary__line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.50);
}

.cart-summary__line span:last-child {
    font-weight: var(--fw-medium);
    color: rgba(255, 255, 255, 0.75);
    font-variant-numeric: tabular-nums;
}

.cart-summary__line--discount span:last-child {
    color: #4ade80;
}

/* Total */
.cart-summary__total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.cart-summary__total-label {
    font-size: var(--text-sm);
    font-weight: var(--fw-semibold);
    color: rgba(255, 255, 255, 0.9);
}

.cart-summary__total-price {
    font-size: 1.75rem;
    font-weight: var(--fw-bold);
    color: #fff;
    letter-spacing: -0.5px;
    font-variant-numeric: tabular-nums;
}

/* CTA */
.cart-summary__cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 16px 22px;
    padding: 14px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--border-radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    text-decoration: none;
    transition: background var(--transition-base), transform var(--transition-base);
    letter-spacing: 0.02em;
}

.cart-summary__cta:hover {
    background: var(--color-primary-hover);
    color: #fff;
    transform: translateY(-1px);
}

/* Trust badges */
.cart-trust {
    list-style: none;
    padding: 0 22px 20px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cart-trust__item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: rgba(255, 255, 255, 0.30);
}

.cart-trust__item svg {
    color: rgba(255, 255, 255, 0.35);
    flex-shrink: 0;
}

/* =====================================================
   8. RESPONSIVE
   ===================================================== */
@media (max-width: 991.98px) {
    .cart-layout {
        grid-template-columns: 1fr;
    }

    .cart-summary-col {
        position: static;
        order: -1;
    }
}

@media (max-width: 767.98px) {
    .cart-hero {
        padding: 48px 0 36px;
    }

    .cart-card {
        grid-template-columns: 40px 1fr;
        grid-template-rows: auto auto;
    }

    .cart-card__price-col {
        grid-column: 2;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        min-width: auto;
    }

    .cart-card__name {
        font-size: var(--text-sm);
    }

    .cart-select {
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .cart-card {
        padding: 14px;
        gap: 12px;
    }

    .cart-summary__title,
    .cart-coupon,
    .cart-summary__lines,
    .cart-summary__total {
        padding-left: 16px;
        padding-right: 16px;
    }

    .cart-summary__cta {
        margin: 12px 16px;
    }

    .cart-trust {
        padding: 0 16px 16px;
    }
}

/* =====================================================
   9. REDUCED MOTION
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
    .cart-card,
    .cart-card--exit,
    .cart-card__remove,
    .cart-summary__cta,
    .cart-empty__cta {
        transition: none !important;
        animation: none !important;
    }
}