/*
 * ShopCore – Frontend Stylesheet
 *
 * This file provides CSS custom-properties, base resets, utility helpers,
 * and component styles that work alongside the Tailwind CDN already
 * loaded in the layout.  Including it as a static asset improves
 * first-paint performance and enables browser caching.
 */

/* ── CSS Custom Properties ────────────────────────────────────── */
:root {
    --color-primary: #4F46E5;
    --color-primary-hover: #4338CA;
    --color-secondary: #7C3AED;
    --color-secondary-hover: #6D28D9;
    --color-success: #10B981;
    --color-danger: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;
    --color-bg: #F9FAFB;
    --color-text: #1F2937;
    --color-text-muted: #6B7280;
    --color-border: #E5E7EB;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* ── Base / Resets ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: var(--color-text); background-color: var(--color-bg); }
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Utility Helpers ─────────────────────────────────────────── */
[x-cloak] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ── Mobile Menu ─────────────────────────────────────────────── */
.mobile-menu { transition: transform var(--transition-normal); }
.mobile-menu.hidden { transform: translateX(-100%); }

/* ── Flash Messages ──────────────────────────────────────────── */
.flash-message {
    animation: fadeInDown 0.4s ease, fadeOut 0.4s ease 3.6s forwards;
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

/* ── Product Card ────────────────────────────────────────────── */
.product-card {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.product-card .product-image {
    overflow: hidden;
}
.product-card .product-image img {
    transition: transform var(--transition-normal);
}
.product-card:hover .product-image img {
    transform: scale(1.05);
}
.product-card .wishlist-btn {
    opacity: 0;
    transition: opacity var(--transition-fast);
}
.product-card:hover .wishlist-btn {
    opacity: 1;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    line-height: 1.25rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background-color: var(--color-primary-hover); }
.btn-secondary {
    background-color: var(--color-secondary);
    color: #fff;
}
.btn-secondary:hover { background-color: var(--color-secondary-hover); }
.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}
.btn-outline:hover { background-color: #F3F4F6; }
.btn-danger {
    background-color: var(--color-danger);
    color: #fff;
}
.btn-danger:hover { background-color: #DC2626; }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.75rem; }
.btn-lg { padding: 0.75rem 1.75rem; font-size: 1rem; }

/* ── Form Inputs ─────────────────────────────────────────────── */
.form-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: #fff;
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
.form-input::placeholder { color: #9CA3AF; }
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.375rem;
}
.form-error {
    font-size: 0.75rem;
    color: var(--color-danger);
    margin-top: 0.25rem;
}

/* ── Badges / Tags ───────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}
.badge-primary { background-color: #EEF2FF; color: var(--color-primary); }
.badge-success { background-color: #ECFDF5; color: #059669; }
.badge-danger  { background-color: #FEF2F2; color: var(--color-danger); }
.badge-warning { background-color: #FFFBEB; color: #D97706; }
.badge-info    { background-color: #EFF6FF; color: var(--color-info); }

/* ── Pagination ──────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.5rem;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}
.pagination a:hover { background-color: #F3F4F6; }
.pagination .active {
    background-color: var(--color-primary);
    color: #fff;
}

/* ── Breadcrumb ──────────────────────────────────────────────── */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .separator { color: #D1D5DB; }

/* ── Star Rating ─────────────────────────────────────────────── */
.stars { display: inline-flex; gap: 0.125rem; color: #FBBF24; }
.stars .empty { color: #D1D5DB; }

/* ── Hero Section ────────────────────────────────────────────── */
.hero-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* ── Skeleton Loading ────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, #F3F4F6 25%, #E5E7EB 50%, #F3F4F6 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}
@keyframes skeleton-loading {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Quantity Selector ───────────────────────────────────────── */
.qty-selector {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.qty-selector button {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F9FAFB;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text);
    transition: background-color var(--transition-fast);
}
.qty-selector button:hover { background-color: #F3F4F6; }
.qty-selector input {
    width: 3rem;
    text-align: center;
    border: none;
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    font-size: 0.875rem;
    padding: 0.25rem;
    -moz-appearance: textfield;
}
.qty-selector input::-webkit-inner-spin-button,
.qty-selector input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

/* ── Tooltip ─────────────────────────────────────────────────── */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    white-space: nowrap;
    background-color: #1F2937;
    color: #fff;
    border-radius: var(--radius-sm);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}
[data-tooltip]:hover::after { opacity: 1; }

/* ── Responsive Helpers ──────────────────────────────────────── */
@media (max-width: 767px) {
    .hide-mobile { display: none !important; }
}
@media (min-width: 768px) {
    .hide-desktop { display: none !important; }
}

/* ── Scrollbar ───────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #F1F5F9; }
::-webkit-scrollbar-thumb { background: #94A3B8; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #64748B; }

/* ── Print ───────────────────────────────────────────────────── */
@media print {
    header, footer, .flash-message, #announcement-bar,
    .mobile-menu, #mobile-overlay, .no-print { display: none !important; }
    body { background: #fff; }
    main { padding: 0; }
}