:root {
    --primary: #0d4ea6;
    --primary-dark: #0a3d84;
    --accent: #16b7de;
    --text: #132445;
    --muted: #5f7390;
    --bg: #f4f8fd;
    --white: #fff;
    --line: #d9e7f7;
    --success: #149a61;
    --danger: #d73852;
    --warning: #d89b17;
    --shadow: 0 20px 50px rgba(13, 78, 166, 0.12);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --container: 1240px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #f8fbff 0%, #eef5fb 100%);
    color: var(--text);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
.topbar {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    color: #fff; font-size: 14px;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 0; flex-wrap: wrap; }
.topbar-actions { display: flex; gap: 18px; flex-wrap: wrap; opacity: .95; }
.site-header {
    position: sticky; top: 0; z-index: 20;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,.84);
    border-bottom: 1px solid rgba(217,231,247,.9);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0; }
.brand img, .admin-brand img { width: clamp(170px, 18vw, 240px); height: auto; }
.main-nav, .admin-nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.nav-link {
    padding: 11px 16px; border-radius: 999px; font-weight: 700; color: var(--muted);
    transition: .25s ease; background: transparent;
}
.nav-link:hover { background: #edf5ff; color: var(--primary); }
.nav-cart { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; }
.cart-pill {
    display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%;
    margin-left: 6px; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.25); font-size: 13px;
}
.flash {
    margin-top: 16px; padding: 14px 16px; border-radius: 14px; font-weight: 600;
    border: 1px solid transparent;
}
.flash-success { background: #ecfaf4; color: #0f7b4d; border-color: #caedd9; }
.flash-error { background: #fff1f4; color: #b32242; border-color: #ffd3dc; }
.hero-section { position: relative; padding: 34px 0 18px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 22px; align-items: stretch; }
.hero-copy, .hero-slider {
    background: rgba(255,255,255,.82); border: 1px solid rgba(217,231,247,.95);
    border-radius: var(--radius-xl); box-shadow: var(--shadow);
}
.hero-copy { padding: 34px; }
.eyebrow {
    display: inline-flex; align-items: center; gap: 10px; padding: 10px 14px;
    border-radius: 999px; background: #ebf5ff; color: var(--primary); font-weight: 800; font-size: 13px;
}
.eyebrow::before {
    content: ''; width: 10px; height: 10px; border-radius: 50%; background: var(--accent);
    box-shadow: 0 0 0 6px rgba(22, 183, 222, .12);
}
.hero-copy h1 { font-size: clamp(34px, 4vw, 58px); line-height: 1.05; margin: 18px 0 14px; letter-spacing: -.03em; }
.hero-copy p { font-size: 17px; line-height: 1.75; color: #435777; margin: 0 0 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn, .btn-inline, .btn-outline, .btn-muted {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    border-radius: 999px; padding: 13px 20px; font-weight: 700; border: 0; cursor: pointer;
}
.btn, .btn-inline {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff;
    box-shadow: 0 15px 34px rgba(13,78,166,.22);
}
.btn:hover, .btn-inline:hover { filter: brightness(.98); }
.btn-outline {
    background: #fff; color: var(--primary); border: 1px solid var(--line);
}
.btn-muted { background: #edf4fd; color: var(--text); }
.hero-metrics { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.metric-card {
    min-width: 132px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 14px 16px;
}
.metric-card strong { display: block; font-size: 24px; color: var(--primary); }
.metric-card span { color: var(--muted); font-size: 13px; }
.hero-slider { position: relative; overflow: hidden; padding: 16px; min-height: 100%; }
.slider-stage { position: relative; height: 100%; min-height: 520px; }
.slide-item {
    position: absolute; inset: 0; opacity: 0; transform: translateX(20px) scale(.98);
    transition: .45s ease; pointer-events: none;
}
.slide-item.active { opacity: 1; transform: translateX(0) scale(1); pointer-events: auto; }
.slide-card { height: 100%; border-radius: 24px; overflow: hidden; position: relative; }
.slide-card img { width: 100%; height: 100%; object-fit: cover; }
.slide-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
    padding: 24px; background: linear-gradient(180deg, rgba(5,28,61,.05) 0%, rgba(5,28,61,.65) 100%);
    color: #fff;
}
.slide-overlay h3 { margin: 0 0 8px; font-size: clamp(24px, 2vw, 32px); }
.slide-overlay p { margin: 0 0 14px; max-width: 40ch; color: rgba(255,255,255,.88); }
.slider-dots { position: absolute; left: 32px; bottom: 24px; display: flex; gap: 10px; z-index: 3; }
.slider-dot {
    width: 12px; height: 12px; border-radius: 50%; border: 0; cursor: pointer;
    background: rgba(255,255,255,.38);
}
.slider-dot.active { background: #fff; transform: scale(1.15); }
.feature-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0 12px; }
.feature-card {
    background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 18px; box-shadow: var(--shadow);
}
.feature-card h3 { margin: 0 0 8px; font-size: 18px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.6; }
.section { padding: 26px 0 30px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.section-head h2 { margin: 0; font-size: clamp(28px, 2.5vw, 42px); letter-spacing: -.03em; }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 70ch; }
.filters {
    display: grid; grid-template-columns: 1.5fr .9fr .7fr; gap: 12px; margin-bottom: 18px;
}
.search-input, .select-input, .text-input, .textarea-input {
    width: 100%; padding: 14px 16px; border-radius: 14px; border: 1px solid var(--line);
    background: #fff; color: var(--text); outline: none;
}
.search-input:focus, .select-input:focus, .text-input:focus, .textarea-input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(13,78,166,.09); }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.product-card {
    background: #fff; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow);
    display: flex; flex-direction: column;
}
.product-media {
    position: relative; padding: 16px; background: linear-gradient(180deg, #eaf3ff 0%, #f7fbff 100%);
}
.product-media img { width: 100%; height: 240px; object-fit: cover; border-radius: 16px; }
.badge {
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px;
    font-size: 12px; font-weight: 800; background: #eaf6ff; color: var(--primary);
}
.product-body { padding: 18px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.product-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 13px; }
.product-body h3 { margin: 0; font-size: 22px; line-height: 1.2; }
.product-body p { margin: 0; color: var(--muted); line-height: 1.7; }
.price-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; }
.price { font-size: 28px; font-weight: 800; color: var(--primary); }
.card-actions { display: flex; gap: 10px; }
.card-actions form { margin: 0; }
.detail-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 24px; padding: 32px 0; }
.detail-card, .panel-card, .cart-card, .checkout-card, .summary-card {
    background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow);
}
.detail-card { overflow: hidden; }
.detail-card img { width: 100%; height: 100%; min-height: 460px; object-fit: cover; }
.detail-info { padding: 28px; }
.detail-info h1 { margin: 12px 0 14px; font-size: clamp(32px, 3vw, 52px); letter-spacing: -.03em; }
.detail-info p { color: var(--muted); line-height: 1.8; }
.meta-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 20px 0; }
.meta-chip { padding: 14px 16px; border-radius: 16px; background: #f6faff; border: 1px solid var(--line); }
.qty-row { display: flex; align-items: center; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.qty-row input { width: 90px; }
.cart-layout, .checkout-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; padding: 30px 0; }
.cart-card, .checkout-card, .summary-card { padding: 22px; }
.cart-item {
    display: grid; grid-template-columns: 120px 1fr auto; gap: 18px; align-items: center;
    padding: 16px 0; border-bottom: 1px solid #eef4fb;
}
.cart-item:last-child { border-bottom: 0; }
.cart-thumb { border-radius: 16px; overflow: hidden; background: #f2f7fc; }
.cart-thumb img { width: 120px; height: 90px; object-fit: cover; }
.cart-item h3 { margin: 0 0 8px; font-size: 20px; }
.cart-actions-inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.cart-actions-inline form { margin: 0; }
.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.empty-state {
    text-align: center; padding: 56px 24px; background: #fff; border: 1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow);
}
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-weight: 700; color: var(--text); }
.textarea-input { min-height: 120px; resize: vertical; }
.card-preview {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--accent));
    border-radius: 22px; color: #fff; padding: 24px; min-height: 210px; box-shadow: 0 20px 45px rgba(13,78,166,.28);
    display: flex; flex-direction: column; justify-content: space-between;
}
.card-preview-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-chip { width: 58px; height: 44px; border-radius: 12px; background: rgba(255,255,255,.28); }
.card-preview-number { font-size: 30px; font-weight: 800; letter-spacing: .08em; }
.card-preview-bottom { display: flex; justify-content: space-between; gap: 20px; font-size: 14px; text-transform: uppercase; }
.summary-list { display: flex; flex-direction: column; gap: 12px; }
.summary-row { display: flex; justify-content: space-between; gap: 14px; color: var(--muted); }
.summary-row.total { color: var(--text); font-size: 21px; font-weight: 800; padding-top: 14px; border-top: 1px solid #eef4fb; }
.notice-box {
    background: #eef7ff; color: var(--text); border: 1px solid #cfe2fb; border-radius: 16px; padding: 15px 16px; line-height: 1.7;
}
.site-footer {
    margin-top: 30px; padding: 36px 0 46px; background: linear-gradient(180deg, #0b326c 0%, #082852 100%); color: #e4effe;
}
.footer-grid { display: grid; grid-template-columns: 1.3fr .8fr .8fr; gap: 22px; }
.footer-logo { width: 210px; margin-bottom: 14px; }
.site-footer h4 { margin: 0 0 10px; font-size: 18px; }
.site-footer p { margin: 0 0 8px; color: rgba(228,239,254,.8); }
.site-footer a:hover { color: #fff; }
/* Login */
.auth-shell {
    min-height: 100vh; display: grid; place-items: center; padding: 24px;
    background: radial-gradient(circle at top right, rgba(22,183,222,.17), transparent 35%), linear-gradient(180deg, #f6fbff 0%, #ebf4fc 100%);
}
.auth-card {
    width: min(520px, 100%); background: #fff; border: 1px solid var(--line); border-radius: 28px; padding: 28px; box-shadow: var(--shadow);
}
.auth-card img { width: 220px; margin-bottom: 14px; }
.auth-card h1 { margin: 0 0 8px; }
.auth-card p { color: var(--muted); line-height: 1.7; }
/* Admin */
.admin-body { background: #f2f7fd; }
.admin-layout { display: grid; grid-template-columns: 290px 1fr; min-height: 100vh; }
.admin-sidebar {
    background: linear-gradient(180deg, #0c3b80 0%, #092c5e 100%); color: #e6f2ff; padding: 24px;
    position: sticky; top: 0; height: 100vh;
}
.admin-brand { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; font-weight: 800; }
.admin-brand span { font-size: 18px; }
.admin-nav { flex-direction: column; align-items: stretch; gap: 8px; }
.admin-nav a {
    padding: 13px 15px; border-radius: 14px; font-weight: 700; color: rgba(230,242,255,.92);
    background: transparent; transition: .25s ease;
}
.admin-nav a:hover { background: rgba(255,255,255,.12); color: #fff; }
.admin-main { padding: 28px; }
.admin-topbar {
    display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; flex-wrap: wrap;
}
.admin-topbar h1 { margin: 0; font-size: 34px; }
.admin-topbar p { margin: 8px 0 0; color: var(--muted); }
.admin-user {
    background: #fff; border: 1px solid var(--line); padding: 12px 16px; border-radius: 999px; font-weight: 700;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 22px; }
.stat-card {
    background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 20px; box-shadow: var(--shadow);
}
.stat-card strong { display: block; font-size: 34px; color: var(--primary); margin-bottom: 8px; }
.stat-card span { color: var(--muted); font-weight: 600; }
.panel-card { padding: 20px; }
.panel-card + .panel-card { margin-top: 18px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-size: 24px; }
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { text-align: left; padding: 14px 12px; border-bottom: 1px solid #edf3fb; vertical-align: top; }
.data-table th { color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .04em; }
.table-thumb { width: 84px; height: 64px; border-radius: 12px; overflow: hidden; background: #eef5fd; }
.table-thumb img { width: 100%; height: 100%; object-fit: cover; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn-small {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 12px;
    border-radius: 12px; border: 1px solid var(--line); background: #fff; color: var(--text); font-weight: 700; cursor: pointer;
}
.btn-small.primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; border-color: transparent; }
.btn-small.danger { background: #fff2f5; color: var(--danger); border-color: #ffd4dc; }
.badge-success, .badge-danger, .badge-warning, .badge-muted {
    display: inline-flex; align-items: center; justify-content: center; padding: 7px 10px; border-radius: 999px; font-size: 12px; font-weight: 800;
}
.badge-success { background: #e9f8f1; color: var(--success); }
.badge-danger { background: #fff1f4; color: var(--danger); }
.badge-warning { background: #fff7e6; color: var(--warning); }
.badge-muted { background: #edf3fa; color: var(--muted); }
.muted { color: var(--muted); }
.help-text { color: var(--muted); font-size: 13px; line-height: 1.6; }
.hidden { display: none !important; }
@media (max-width: 1100px) {
    .hero-grid, .detail-layout, .cart-layout, .checkout-layout { grid-template-columns: 1fr; }
    .feature-strip, .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .admin-layout { grid-template-columns: 1fr; }
    .admin-sidebar { position: static; height: auto; }
}
@media (max-width: 760px) {
    .main-nav, .feature-strip, .filters, .product-grid, .form-grid, .footer-grid, .stats-grid, .meta-list { grid-template-columns: 1fr; display: grid; }
    .main-nav { display: flex; }
    .hero-copy, .cart-card, .checkout-card, .summary-card, .panel-card { padding: 18px; }
    .nav-wrap, .topbar-inner, .section-head, .panel-head, .admin-topbar { align-items: stretch; }
    .cart-item { grid-template-columns: 1fr; }
    .card-preview-number { font-size: 24px; }
}