/**
 * PerfectWelding — Side Cart Drawer
 * Dark industrial ecommerce style with orange accents
 *
 * BEM: .pw-side-cart  /  .pw-sci (side-cart-item)
 */

/* ─── CSS VARIABLES ──────────────────────────────────────────── */
:root {
    --pw-cart-width:      420px;
    --pw-cart-bg:         #111213;
    --pw-cart-border:     rgba(255, 255, 255, 0.07);
    --pw-cart-surface:    #1a1b1d;
    --pw-cart-surface2:   #222325;
    --pw-cart-accent:     #ff6600;
    --pw-cart-accent-dim: rgba(255, 102, 0, 0.15);
    --pw-cart-text:       #e8e8e8;
    --pw-cart-muted:      #888;
    --pw-cart-danger:     #e53e3e;
    --pw-cart-z:          99999;
    --pw-cart-radius:     6px;
    --pw-cart-speed:      320ms;
    --pw-cart-ease:       cubic-bezier(0.4, 0, 0.2, 1);
    --pw-cart-shadow:     -8px 0 40px rgba(0, 0, 0, 0.6);
    --pw-font-body:       'DM Sans', system-ui, sans-serif;
    --pw-font-mono:       'Space Mono', monospace;
}

/* ─── OVERLAY ────────────────────────────────────────────────── */
.pw-cart-overlay {
    position: fixed;
    inset: 0;
    z-index: calc(var(--pw-cart-z) - 1);
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--pw-cart-speed) var(--pw-cart-ease);
    will-change: opacity;
}

.pw-cart-overlay.is-active {
    opacity: 1;
    pointer-events: all;
}

/* ─── DRAWER ─────────────────────────────────────────────────── */
.pw-side-cart {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: var(--pw-cart-z);
    width: min(var(--pw-cart-width), 100vw);
    display: flex;
    flex-direction: column;
    background: var(--pw-cart-bg);
    box-shadow: var(--pw-cart-shadow);
    border-left: 1px solid var(--pw-cart-border);
    transform: translateX(100%);
    transition: transform var(--pw-cart-speed) var(--pw-cart-ease);
    will-change: transform;
    font-family: var(--pw-font-body);
    overflow: hidden;
}

.pw-side-cart.is-open {
    transform: translateX(0);
}

/* Accent line on left edge */
.pw-side-cart::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--pw-cart-accent) 0%, transparent 60%);
    opacity: 0.7;
    pointer-events: none;
}

/* ─── HEADER ─────────────────────────────────────────────────── */
.pw-side-cart__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--pw-cart-border);
    background: var(--pw-cart-surface);
    flex-shrink: 0;
}

.pw-side-cart__title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--pw-font-mono);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--pw-cart-text);
}

.pw-side-cart__title svg {
    color: var(--pw-cart-accent);
    flex-shrink: 0;
}

.pw-side-cart__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--pw-cart-accent);
    color: #fff;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1;
    transition: transform 0.2s var(--pw-cart-ease), background 0.2s;
}

.pw-side-cart__count.bump {
    transform: scale(1.35);
}

.pw-side-cart__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--pw-cart-border);
    background: transparent;
    color: var(--pw-cart-muted);
    cursor: pointer;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
    flex-shrink: 0;
}

.pw-side-cart__close:hover {
    color: var(--pw-cart-text);
    border-color: var(--pw-cart-accent);
    background: var(--pw-cart-accent-dim);
}

/* ─── BODY (scrollable) ─────────────────────────────────────── */
.pw-side-cart__body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: rgba(255,102,0,0.25) transparent;
}

.pw-side-cart__body::-webkit-scrollbar {
    width: 4px;
}

.pw-side-cart__body::-webkit-scrollbar-track {
    background: transparent;
}

.pw-side-cart__body::-webkit-scrollbar-thumb {
    background: rgba(255, 102, 0, 0.3);
    border-radius: 4px;
}

/* Loading state shimmer overlay */
.pw-side-cart__body.is-loading {
    pointer-events: none;
    position: relative;
}

.pw-side-cart__body.is-loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(17, 18, 19, 0.55);
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ─── EMPTY STATE ────────────────────────────────────────────── */
.pw-side-cart__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 32px;
    text-align: center;
    gap: 16px;
    min-height: 280px;
}

.pw-side-cart__empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 1px solid var(--pw-cart-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 102, 0, 0.4);
    background: var(--pw-cart-surface);
    margin-bottom: 8px;
}

.pw-side-cart__empty-text {
    font-size: 15px;
    color: var(--pw-cart-muted);
    margin: 0;
    letter-spacing: 0.01em;
}

.pw-side-cart__continue {
    display: inline-block;
    margin-top: 4px;
    padding: 9px 22px;
    border: 1px solid var(--pw-cart-accent);
    color: var(--pw-cart-accent);
    font-size: 12px;
    font-family: var(--pw-font-mono);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: var(--pw-cart-radius);
    transition: background 0.18s, color 0.18s;
}

.pw-side-cart__continue:hover {
    background: var(--pw-cart-accent);
    color: #fff;
}

/* ─── CART ITEMS LIST ────────────────────────────────────────── */
.pw-side-cart__items {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* ─── SINGLE ITEM  (.pw-sci) ─────────────────────────────────── */
.pw-sci {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 16px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--pw-cart-border);
    background: var(--pw-cart-bg);
    transition: background 0.18s;
    position: relative;
    animation: pw-sci-enter 0.3s var(--pw-cart-ease) both;
}

@keyframes pw-sci-enter {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.pw-sci:hover {
    background: rgba(26, 27, 29, 0.6);
}

.pw-sci.is-removing {
    animation: pw-sci-exit 0.28s var(--pw-cart-ease) forwards;
}

@keyframes pw-sci-exit {
    to { opacity: 0; transform: translateX(20px); max-height: 0; padding: 0; border: none; }
}

/* Thumbnail */
.pw-sci__thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--pw-cart-radius);
    overflow: hidden;
    border: 1px solid var(--pw-cart-border);
    background: var(--pw-cart-surface);
    flex-shrink: 0;
}

.pw-sci__thumb a {
    display: block;
    width: 100%;
    height: 100%;
}

.pw-sci__img,
.pw-sci__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.25s var(--pw-cart-ease);
}

.pw-sci__thumb:hover img {
    transform: scale(1.05);
}

/* Info column */
.pw-sci__info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.pw-sci__name {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--pw-cart-text);
    text-decoration: none;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.15s;
}

.pw-sci__name:hover {
    color: var(--pw-cart-accent);
}

.pw-sci__price {
    font-size: 12px;
    color: var(--pw-cart-muted);
    font-family: var(--pw-font-mono);
}

/* Controls row */
.pw-sci__controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
    flex-wrap: wrap;
}

/* Quantity stepper */
.pw-sci__qty {
    display: flex;
    align-items: center;
    border: 1px solid var(--pw-cart-border);
    border-radius: var(--pw-cart-radius);
    overflow: hidden;
    background: var(--pw-cart-surface2);
}

.pw-sci__qty-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--pw-cart-muted);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
    flex-shrink: 0;
}

.pw-sci__qty-btn:hover {
    color: var(--pw-cart-accent);
    background: var(--pw-cart-accent-dim);
}

.pw-sci__qty-val {
    width: 36px;
    text-align: center;
    background: transparent;
    border: none;
    border-left: 1px solid var(--pw-cart-border);
    border-right: 1px solid var(--pw-cart-border);
    color: var(--pw-cart-text);
    font-family: var(--pw-font-mono);
    font-size: 13px;
    font-weight: 700;
    padding: 0;
    height: 28px;
    -moz-appearance: textfield;
    outline: none;
}

.pw-sci__qty-val::-webkit-inner-spin-button,
.pw-sci__qty-val::-webkit-outer-spin-button { -webkit-appearance: none; }

/* Subtotal */
.pw-sci__subtotal {
    font-size: 13px;
    font-weight: 700;
    color: var(--pw-cart-accent);
    font-family: var(--pw-font-mono);
    margin-left: auto;
    white-space: nowrap;
}

/* Remove */
.pw-sci__remove {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: transparent;
    border: none;
    color: var(--pw-cart-muted);
    font-size: 11px;
    font-family: var(--pw-font-mono);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    padding: 3px 0;
    transition: color 0.15s;
    flex-shrink: 0;
}

.pw-sci__remove:hover {
    color: var(--pw-cart-danger);
}

/* ─── FOOTER ─────────────────────────────────────────────────── */
.pw-side-cart__footer {
    border-top: 1px solid var(--pw-cart-border);
    background: var(--pw-cart-surface);
    padding: 20px 24px;
    flex-shrink: 0;
}

.pw-side-cart__subtotal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--pw-cart-border);
}

.pw-side-cart__subtotal span:first-child {
    font-size: 12px;
    font-family: var(--pw-font-mono);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pw-cart-muted);
}

.pw-side-cart__subtotal-val {
    font-size: 20px;
    font-weight: 700;
    font-family: var(--pw-font-mono);
    color: var(--pw-cart-text);
}

.pw-side-cart__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* Shared button base */
.pw-side-cart__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 13px 18px;
    border-radius: var(--pw-cart-radius);
    font-family: var(--pw-font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background 0.18s, color 0.18s, transform 0.15s, box-shadow 0.18s;
    white-space: nowrap;
}

.pw-side-cart__btn:active {
    transform: scale(0.97);
}

/* Secondary — View Cart */
.pw-side-cart__btn--secondary {
    background: var(--pw-cart-surface2);
    color: var(--pw-cart-text);
    border: 1px solid var(--pw-cart-border);
}

.pw-side-cart__btn--secondary:hover {
    border-color: var(--pw-cart-accent);
    color: var(--pw-cart-accent);
    background: var(--pw-cart-accent-dim);
}

/* Primary — Checkout */
.pw-side-cart__btn--primary {
    background: var(--pw-cart-accent);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 102, 0, 0.35);
}

.pw-side-cart__btn--primary:hover {
    background: #ff7a1a;
    box-shadow: 0 6px 28px rgba(255, 102, 0, 0.5);
}

/* ─── LOADING SPINNER (inside body) ─────────────────────────── */
.pw-side-cart__spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 36px;
}

.pw-side-cart__spinner::after {
    content: '';
    width: 28px;
    height: 28px;
    border: 2px solid var(--pw-cart-border);
    border-top-color: var(--pw-cart-accent);
    border-radius: 50%;
    animation: pw-spin 0.65s linear infinite;
}

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

/* ─── TOAST NOTIFICATION (reuses existing .pw-toast) ────────── */
.pw-toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    background: var(--pw-cart-surface);
    border: 1px solid var(--pw-cart-border);
    border-left: 3px solid var(--pw-cart-accent);
    color: var(--pw-cart-text);
    padding: 12px 20px;
    border-radius: var(--pw-cart-radius);
    font-size: 13px;
    font-family: var(--pw-font-body);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: calc(var(--pw-cart-z) + 10);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s var(--pw-cart-ease);
    white-space: nowrap;
    max-width: 90vw;
}

.pw-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: all;
}

.pw-toast a {
    color: var(--pw-cart-accent);
    text-decoration: none;
    font-weight: 600;
}

.pw-toast a:hover {
    text-decoration: underline;
}

.pw-toast-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--pw-cart-accent);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 480px) {
    :root {
        --pw-cart-width: 100vw;
    }

    .pw-side-cart {
        border-left: none;
    }

    .pw-sci {
        grid-template-columns: 68px 1fr;
        padding: 14px 16px;
    }

    .pw-sci__thumb {
        width: 68px;
        height: 68px;
    }

    .pw-side-cart__header,
    .pw-side-cart__footer {
        padding-left: 16px;
        padding-right: 16px;
    }

    .pw-side-cart__actions {
        grid-template-columns: 1fr;
    }
}

/* ─── BODY LOCK (prevent scroll when cart is open) ───────────── */
body.pw-cart-open {
    overflow: hidden;
}

/* ─── CART BTN trigger (pulse on add) ───────────────────────── */
.cart-btn.pw-added {
    animation: pw-cart-pulse 0.45s var(--pw-cart-ease);
}

@keyframes pw-cart-pulse {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.25); }
    70%  { transform: scale(0.92); }
    100% { transform: scale(1); }
}