:root {
    --black: #0a0a0a;
    --white: #f5f5f0;
    --red: #e81c1c;
    --red-dark: #b01010;
    --red-glow: rgba(232, 28, 28, 0.15);
    --grey: #1a1a1a;
    --grey-mid: #2e2e2e;
    --grey-light: #888;
    --grey-border: #222;
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;
    --radius: 2px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    overflow-x: hidden;
    cursor: none;
}

/* ── CUSTOM CURSOR ── */
#cursor {
    width: 12px;
    height: 12px;
    background: var(--red);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width .2s, height .2s, background .2s;
    mix-blend-mode: normal;
}

#cursor-ring {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(232, 28, 28, 0.5);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform .12s ease, width .2s, height .2s;
}

body.hovering #cursor {
    width: 8px;
    height: 8px;
    background: var(--white);
}

body.hovering #cursor-ring {
    width: 52px;
    height: 52px;
    border-color: var(--red);
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar {
    width: 3px;
}

::-webkit-scrollbar-track {
    background: var(--black);
}

::-webkit-scrollbar-thumb {
    background: var(--red);
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 40px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: var(--transition);
}

nav.scrolled {
    border-bottom-color: var(--grey-border);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 28px;
    letter-spacing: 3px;
    color: var(--white);
    text-decoration: none;
    cursor: none;
}

.nav-logo span {
    color: var(--red);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--grey-light);
    text-decoration: none;
    cursor: none;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--red);
    transition: width var(--transition);
}

.nav-links a:hover {
    color: var(--white);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--grey-border);
    color: var(--white);
    cursor: none;
    transition: var(--transition);
    position: relative;
}

.nav-icon-btn:hover {
    border-color: var(--red);
    color: var(--red);
}

.cart-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 18px;
    height: 18px;
    background: var(--red);
    border-radius: 50%;
    font-size: 10px;
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: none;
    padding: 4px;
}

.hamburger span {
    width: 24px;
    height: 1.5px;
    background: var(--white);
    transition: var(--transition);
}

/* ── PAGES ── */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* ══════════════════════════════════════
   HOME PAGE
══════════════════════════════════════ */

/* HERO */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 0 40px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(232, 28, 28, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(232, 28, 28, 0.05) 0%, transparent 60%),
    var(--black);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at center, black 40%, transparent 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    animation: fadeUp 0.8s 0.2s forwards;
}

.hero-eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--red);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(72px, 10vw, 140px);
    line-height: 0.9;
    letter-spacing: -2px;
    color: var(--white);
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeUp 0.8s 0.4s forwards;
}

.hero-title span {
    color: var(--red);
    display: block;
}

.hero-desc {
    font-size: 16px;
    color: var(--grey-light);
    line-height: 1.7;
    max-width: 420px;
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeUp 0.8s 0.6s forwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.8s 0.8s forwards;
}

.btn-primary {
    padding: 16px 40px;
    background: var(--red);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: none;
    cursor: none;
    transition: var(--transition);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.btn-primary:hover {
    color: var(--black);
}

.btn-primary span {
    position: relative;
    z-index: 1;
}

.btn-outline {
    padding: 16px 40px;
    background: transparent;
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: 1px solid var(--grey-border);
    cursor: none;
    transition: var(--transition);
    clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
}

.btn-outline:hover {
    border-color: var(--white);
}

.hero-visual {
    position: absolute;
    right: -60px;
    top: 50%;
    transform: translateY(-50%);
    width: 55vw;
    max-width: 700px;
    opacity: 0;
    animation: fadeLeft 1s 0.5s forwards;
}

.hero-bracelet-ring {
    width: 100%;
    aspect-ratio: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ring-svg {
    width: 100%;
    height: 100%;
    animation: rotate 30s linear infinite;
}

.center-bracelet {
    position: absolute;
    width: 45%;
    aspect-ratio: 1;
    background: var(--grey);
    border-radius: 50%;
    border: 3px solid var(--grey-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(232, 28, 28, 0.2), inset 0 0 40px rgba(0, 0, 0, 0.5);
}

.center-bracelet::after {
    content: 'SOS';
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--red);
    letter-spacing: 4px;
}

.hero-stats {
    position: absolute;
    bottom: 60px;
    right: 40px;
    display: flex;
    gap: 48px;
    opacity: 0;
    animation: fadeUp 0.8s 1s forwards;
}

.stat {
    text-align: right;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 36px;
    color: var(--white);
    line-height: 1;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--grey-light);
    text-transform: uppercase;
    margin-top: 4px;
}

/* MARQUEE */
.marquee-section {
    padding: 20px 0;
    background: var(--red);
    overflow: hidden;
    position: relative;
}

.marquee-track {
    display: flex;
    animation: marquee 20s linear infinite;
    white-space: nowrap;
}

.marquee-item {
    font-family: var(--font-display);
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--white);
    padding: 0 32px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 12px;
}

.marquee-item::after {
    content: '✦';
    font-size: 8px;
}

/* FEATURES */
.features-section {
    padding: 120px 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 80px;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(40px, 5vw, 72px);
    line-height: 1;
    letter-spacing: 1px;
}

.section-link {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--grey-light);
    text-decoration: none;
    text-transform: uppercase;
    cursor: none;
    transition: color var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-link:hover {
    color: var(--red);
}

.section-link svg {
    transition: transform var(--transition);
}

.section-link:hover svg {
    transform: translateX(4px);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}

.feature-card {
    padding: 48px 32px;
    background: var(--grey);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    cursor: none;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    background: #1f1f1f;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border: 1px solid var(--grey-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 28px;
    color: var(--red);
    font-size: 22px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    border-color: var(--red);
    background: var(--red-glow);
}

.feature-num {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--grey-light);
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 26px;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--grey-light);
    line-height: 1.7;
}

/* FEATURED PRODUCTS */
.products-section {
    padding: 80px 40px 120px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

/* PRODUCT CARD */
.product-card {
    background: var(--grey);
    cursor: none;
    transition: transform var(--transition);
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-6px);
}

.product-img {
    aspect-ratio: 1;
    background: var(--grey-mid);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img-inner {
    width: 60%;
    aspect-ratio: 1;
    position: relative;
    z-index: 2;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .product-img-inner {
    transform: scale(1.08) rotate(-3deg);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 5px 10px;
    background: var(--red);
    color: var(--white);
    z-index: 3;
}

.product-badge.new {
    background: var(--white);
    color: var(--black);
}

.product-quick-add {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px;
    background: var(--red);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--white);
    border: none;
    cursor: none;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 4;
}

.product-card:hover .product-quick-add {
    transform: translateY(0);
}

.product-info {
    padding: 20px;
}

.product-name {
    font-family: var(--font-display);
    font-size: 20px;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.product-sub {
    font-size: 12px;
    color: var(--grey-light);
    margin-bottom: 14px;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 700;
}

.product-price.old {
    text-decoration: line-through;
    color: var(--grey-light);
    font-size: 12px;
    margin-right: 6px;
}

.product-colors {
    display: flex;
    gap: 6px;
}

.color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: none;
    transition: transform var(--transition);
}

.color-dot:hover {
    transform: scale(1.3);
}

/* TESTIMONIALS */
.testimonials-section {
    padding: 120px 40px;
    background: var(--grey);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin-top: 60px;
}

.testimonial-card {
    padding: 40px;
    background: var(--black);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-family: var(--font-display);
    font-size: 120px;
    line-height: 0.8;
    color: var(--red);
    opacity: 0.1;
    position: absolute;
    top: 24px;
    left: 24px;
}

.testimonial-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--grey-light);
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--grey-mid);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--red);
    border: 1px solid var(--grey-border);
}

.author-name {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
}

.author-role {
    font-size: 12px;
    color: var(--grey-light);
    margin-top: 2px;
}

.stars {
    color: var(--red);
    font-size: 12px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

/* ══════════════════════════════════════
   PRODUCTS PAGE
══════════════════════════════════════ */
.page-hero {
    padding: 140px 40px 60px;
    position: relative;
    overflow: hidden;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 50% 100% at 80% 50%, rgba(232, 28, 28, 0.06) 0%, transparent 70%);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(60px, 8vw, 120px);
    letter-spacing: 2px;
    line-height: 1;
    position: relative;
    z-index: 1;
}

.page-subtitle {
    font-size: 15px;
    color: var(--grey-light);
    max-width: 400px;
    margin-top: 16px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.filter-bar {
    padding: 24px 40px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    border-top: 1px solid var(--grey-border);
    border-bottom: 1px solid var(--grey-border);
    margin-bottom: 48px;
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 10px 20px;
    background: none;
    border: 1px solid var(--grey-border);
    color: var(--grey-light);
    cursor: none;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    border-color: var(--red);
    color: var(--white);
    background: var(--red-glow);
}

.products-grid-full {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    padding: 0 40px 80px;
}

/* ══════════════════════════════════════
   PRODUCT DETAIL PAGE
══════════════════════════════════════ */
/* Đổi page-detail để không bị overflow hidden */
#page-detail {
    overflow-y: auto;
}

/* detail-wrap không cần padding lớn nữa vì back-button đã tách ra */
.detail-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
    padding: 40px 40px 80px; /* ✅ giảm padding-top, back button đã ra ngoài */
}

.detail-gallery {
    position: sticky;
    top: 100px;
}

.detail-main-img {
    aspect-ratio: 1;
    background: var(--grey);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 12px;
}

.detail-thumbs {
    display: flex;
    gap: 8px;
}

.detail-thumb {
    width: 70px;
    aspect-ratio: 1;
    background: var(--grey);
    border: 1px solid transparent;
    cursor: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.detail-thumb.active, .detail-thumb:hover {
    border-color: var(--red);
}

.detail-info {
}

.detail-breadcrumb {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--grey-light);
    margin-bottom: 24px;
    display: flex;
    gap: 8px;
    align-items: center;
}

.detail-breadcrumb a {
    color: var(--grey-light);
    text-decoration: none;
    cursor: none;
}

.detail-breadcrumb a:hover {
    color: var(--white);
}

.detail-name {
    font-family: var(--font-display);
    font-size: clamp(36px, 4vw, 56px);
    line-height: 1;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.detail-tagline {
    font-size: 15px;
    color: var(--grey-light);
    margin-bottom: 32px;
}

.detail-price {
    font-family: var(--font-mono);
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 36px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.detail-price-old {
    font-size: 18px;
    color: var(--grey-light);
    text-decoration: line-through;
}

.detail-price-badge {
    font-size: 12px;
    padding: 4px 10px;
    background: var(--red);
    color: var(--white);
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.label-sm {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--grey-light);
    margin-bottom: 14px;
}

.colors-row {
    display: flex;
    gap: 10px;
    margin-bottom: 32px;
}

.color-swatch {
    width: 36px;
    height: 36px;
    border: 2px solid transparent;
    cursor: none;
    transition: var(--transition);
    position: relative;
}

.color-swatch.active, .color-swatch:hover {
    border-color: var(--white);
}

.qty-row {
    display: flex;
    gap: 0;
    align-items: center;
    margin-bottom: 28px;
}

.qty-btn {
    width: 44px;
    height: 44px;
    background: var(--grey);
    border: 1px solid var(--grey-border);
    color: var(--white);
    font-size: 18px;
    cursor: none;
    transition: var(--transition);
}

.qty-btn:hover {
    border-color: var(--red);
    color: var(--red);
}

.qty-val {
    width: 60px;
    height: 44px;
    background: var(--grey);
    border: none;
    border-top: 1px solid var(--grey-border);
    border-bottom: 1px solid var(--grey-border);
    color: var(--white);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 14px;
}

.add-to-cart-btn {
    width: 100%;
    padding: 18px;
    background: var(--red);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: none;
    cursor: none;
    margin-bottom: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.add-to-cart-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.add-to-cart-btn:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.add-to-cart-btn:hover {
    color: var(--black);
}

.add-to-cart-btn span {
    position: relative;
    z-index: 1;
}

.wishlist-btn {
    width: 100%;
    padding: 18px;
    background: transparent;
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: 1px solid var(--grey-border);
    cursor: none;
    transition: var(--transition);
    margin-bottom: 36px;
}

.wishlist-btn:hover {
    border-color: var(--white);
}

.detail-specs {
    border-top: 1px solid var(--grey-border);
    padding-top: 32px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 14px;
}

.spec-key {
    color: var(--grey-light);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
}

/* ══════════════════════════════════════
   CART PAGE
══════════════════════════════════════ */
.cart-wrap {
    padding: 100px 40px 80px;
    max-width: 1100px;
    margin: 0 auto;
}

.cart-header {
    font-family: var(--font-display);
    font-size: 64px;
    margin-bottom: 48px;
    display: flex;
    align-items: baseline;
    gap: 20px;
}

.cart-count {
    font-size: 24px;
    color: var(--grey-light);
}

.cart-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 48px;
    align-items: start;
}

.cart-items {
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 24px;
    padding: 28px 0;
    border-bottom: 1px solid var(--grey-border);
    align-items: center;
}

.cart-item-img {
    aspect-ratio: 1;
    background: var(--grey);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.cart-item-name {
    font-family: var(--font-display);
    font-size: 22px;
    margin-bottom: 6px;
}

.cart-item-sub {
    font-size: 13px;
    color: var(--grey-light);
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

.cart-remove {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
    color: var(--grey-light);
    background: none;
    border: none;
    cursor: none;
    text-transform: uppercase;
    transition: color var(--transition);
}

.cart-remove:hover {
    color: var(--red);
}

.cart-item-price {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    text-align: right;
}

.order-summary {
    background: var(--grey);
    padding: 36px;
    position: sticky;
    top: 100px;
}

.summary-title {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 28px;
    letter-spacing: 1px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--grey-border);
    font-size: 14px;
}

.summary-row:last-of-type {
    border: none;
}

.summary-row.total {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    padding-top: 20px;
}

.summary-row.total span:last-child {
    color: var(--red);
}

.promo-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--black);
    border: 1px solid var(--grey-border);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
    margin: 20px 0 8px;
    outline: none;
    transition: border-color var(--transition);
}

.promo-input:focus {
    border-color: var(--red);
}

.promo-input::placeholder {
    color: var(--grey-light);
}

.empty-cart {
    text-align: center;
    padding: 80px 20px;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 24px;
    opacity: 0.3;
}

.empty-cart h3 {
    font-family: var(--font-display);
    font-size: 36px;
    margin-bottom: 12px;
}

.empty-cart p {
    color: var(--grey-light);
    margin-bottom: 32px;
}

/* ══════════════════════════════════════
   LOGIN PAGE
══════════════════════════════════════ */
.user-menu-wrapper {
    position: relative;
}

.user-dropdown {
    position: absolute;
    top: 55px;
    right: 0;
    min-width: 180px;

    background: rgba(10, 10, 10, 0.96);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 18px;

    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);

    display: none;
    flex-direction: column;

    overflow: hidden;
    z-index: 999;

    box-shadow:
            0 10px 30px rgba(0,0,0,0.45),
            inset 0 1px 0 rgba(255,255,255,0.04);

    padding: 8px;
    animation: dropdownFade 0.25s ease;
}

.user-dropdown.active {
    display: flex;
}

.user-dropdown a {
    padding: 14px 16px;

    text-decoration: none;
    color: var(--white);

    font-size: 12px;
    font-family: var(--font-mono);
    letter-spacing: 2px;
    text-transform: uppercase;

    border-radius: 12px;

    transition: all 0.25s ease;
}

.user-dropdown a:hover {
    background: rgba(255,255,255,0.06);
    color: var(--red);

    transform: translateX(4px);
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-wrap {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.login-visual {
    background: var(--grey);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-visual-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 50%, rgba(232, 28, 28, 0.15) 0%, transparent 70%);
}

.login-visual-text {
    position: relative;
    z-index: 1;
    text-align: center;
}

.login-brand {
    font-family: var(--font-display);
    font-size: 80px;
    letter-spacing: 8px;
    line-height: 1;
    color: var(--white);
    margin-bottom: 16px;
}

.login-brand span {
    color: var(--red);
}

.login-tagline {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 4px;
    color: var(--grey-light);
    text-transform: uppercase;
}

.login-form-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 60px;
}

.login-title {
    font-family: var(--font-display);
    font-size: 48px;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.login-sub {
    font-size: 14px;
    color: var(--grey-light);
    margin-bottom: 48px;
}

.form-group {
    width: 100%;
    max-width: 360px;
    margin-bottom: 20px;
}

.form-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--grey-light);
    display: block;
    margin-bottom: 10px;
}

.form-input {
    width: 100%;
    padding: 16px 18px;
    background: var(--grey);
    border: 1px solid var(--grey-border);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition);
    border-radius: var(--radius);
}

.form-input:focus {
    border-color: var(--red);
}

.form-input::placeholder {
    color: var(--grey-light);
}

.login-btn {
    width: 100%;
    max-width: 360px;
    padding: 18px;
    background: var(--red);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: none;
    cursor: none;
    margin-top: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.login-btn:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.login-btn:hover {
    color: var(--black);
}

.login-btn span {
    position: relative;
    z-index: 1;
}

.login-footer {
    margin-top: 24px;
    font-size: 13px;
    color: var(--grey-light);
}

.login-footer a {
    color: var(--red);
    text-decoration: none;
    cursor: none;
}

.login-divider {
    width: 100%;
    max-width: 360px;
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
    color: var(--grey-light);
    font-size: 12px;
}

.login-divider::before, .login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--grey-border);
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
    background: var(--grey);
    border-top: 1px solid var(--grey-border);
    padding: 80px 40px 40px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 42px;
    letter-spacing: 4px;
    margin-bottom: 16px;
}

.footer-brand span {
    color: var(--red);
}

.footer-desc {
    font-size: 13px;
    color: var(--grey-light);
    line-height: 1.7;
    max-width: 260px;
}

.footer-col-title {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 13px;
    color: var(--grey-light);
    text-decoration: none;
    cursor: none;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--red);
}

.footer-bottom {
    border-top: 1px solid var(--grey-border);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--grey-light);
    letter-spacing: 1px;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.social-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--grey-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--grey-light);
    font-size: 14px;
    cursor: none;
    transition: var(--transition);
    text-decoration: none;
}

.social-btn:hover {
    border-color: var(--red);
    color: var(--red);
}

/* ══════════════════════════════════════
   TOAST NOTIFICATION
══════════════════════════════════════ */
.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 9999;
    background: var(--grey);
    border-left: 3px solid var(--red);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 280px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    font-size: 20px;
}

.toast-text {
    font-size: 13px;
}

.toast-title {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    margin-bottom: 3px;
}

/* ══════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════ */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeLeft {
    from {
        opacity: 0;
        transform: translateY(-50%) translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) translateX(0);
    }
}

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

@keyframes marquee {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(232, 28, 28, 0.4);
    }
    50% {
        box-shadow: 0 0 0 16px rgba(232, 28, 28, 0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: none;
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

/* ══════════════════════════════════════
   MOBILE MENU
══════════════════════════════════════ */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: var(--black);
    display: flex;
    flex-direction: column;
    padding: 100px 40px 40px;
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-nav-link {
    font-family: var(--font-display);
    font-size: 52px;
    letter-spacing: 2px;
    color: var(--white);
    text-decoration: none;
    cursor: none;
    display: block;
    border-bottom: 1px solid var(--grey-border);
    padding: 16px 0;
    transition: color var(--transition), padding-left var(--transition);
}

.mobile-nav-link:hover {
    color: var(--red);
    padding-left: 16px;
}

/* ── NOTIFICATION ── */
.notif-wrapper { position: relative; }

.notif-badge { background: var(--red); }

.notif-dropdown {
    position: absolute;
    top: 55px;
    right: 0;
    width: 340px;
    background: rgba(10, 10, 10, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    display: none;
    flex-direction: column;
    z-index: 999;
    animation: dropdownFade 0.25s ease;
}
.notif-dropdown.active { display: flex; }

.notif-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--grey-border);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--white);
}
.notif-readall {
    background: none;
    border: none;
    color: var(--grey-light);
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--transition);
}
.notif-readall:hover { color: var(--red); }

.notif-body { max-height: 360px; overflow-y: auto; }

.notif-item {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--grey-border);
    transition: background var(--transition);
    cursor: pointer;
}
.notif-item:hover { background: rgba(255, 255, 255, 0.04); }
.notif-item:last-child { border-bottom: none; }

.notif-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: transparent;
    margin-top: 6px;
    flex-shrink: 0;
}
.notif-item.unread .notif-dot { background: var(--red); }

.notif-item-title { font-size: 13px; color: var(--white); margin-bottom: 3px; }
.notif-item.unread .notif-item-title { font-weight: 600; }
.notif-item-text { font-size: 12px; color: var(--grey-light); line-height: 1.5; }
.notif-item-time {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--grey-light);
    margin-top: 6px;
}

.notif-empty {
    text-align: center;
    padding: 36px 16px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--grey-light);
}

@media (max-width: 768px) {
    /* Trên mobile dropdown bám theo màn hình, không bám theo nút */
    .notif-wrapper { position: static; }
    .notif-dropdown {
        position: fixed;
        top: 66px;
        left: 12px;
        right: 12px;
        width: auto;
    }
}

/* ── DEMO NOTICE ── */
.demo-overlay {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.demo-overlay.open { opacity: 1; pointer-events: all; }

.demo-box {
    position: relative;
    width: 100%;
    max-width: 480px;
    background: var(--grey);
    border: 1px solid var(--grey-border);
    padding: 44px 36px 32px;
    text-align: center;
    transform: translateY(20px) scale(0.97);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.demo-overlay.open .demo-box { transform: none; }
.demo-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--red), transparent);
}

.demo-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 20px;
    border-radius: 50%;
    border: 1.5px solid var(--red);
    background: var(--red-glow);
    color: var(--red);
    font-family: var(--font-display);
    font-size: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.demo-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 4px;
    color: var(--red);
    margin-bottom: 8px;
}
.demo-title {
    font-family: var(--font-display);
    font-size: 34px;
    letter-spacing: 1px;
    margin-bottom: 18px;
}
.demo-text {
    font-size: 14px;
    color: var(--grey-light);
    line-height: 1.8;
    margin-bottom: 12px;
}
.demo-thanks {
    font-size: 14px;
    color: var(--white);
    margin: 20px 0 28px;
}
.demo-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}
.demo-actions .btn-primary,
.demo-actions .btn-outline { padding: 14px 24px; flex: 1; }

@media (max-width: 480px) {
    .demo-box { padding: 36px 22px 24px; }
    .demo-title { font-size: 28px; }
    .demo-actions { flex-direction: column-reverse; }
}


#register-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

#register-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.register-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: register-spin 0.7s linear infinite;
    flex-shrink: 0;
}

.register-spinner[hidden] {
    display: none;
}

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


/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* ── Thiết bị cảm ứng: bỏ cursor tuỳ chỉnh, luôn hiện nút thêm giỏ ── */
@media (hover: none), (pointer: coarse) {
    * { cursor: auto !important; }
    #cursor, #cursor-ring { display: none !important; }

    .product-quick-add {
        transform: translateY(0);
        padding: 10px;
        font-size: 9px;
        letter-spacing: 2px;
    }
    .product-card:hover { transform: none; }
    .product-card:hover .product-img-inner { transform: none; }
}

/* ── Tablet ≤ 1024px ── */
@media (max-width: 1024px) {
    .hero-visual { width: 60vw; right: -15vw; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr 1fr; }
    .footer-top { grid-template-columns: 1fr 1fr; }

    .detail-wrap { grid-template-columns: 1fr; gap: 40px; }
    .detail-gallery { position: static; }

    .cart-grid { grid-template-columns: 1fr; }
    .order-summary { position: static; }
}

/* ── Mobile ≤ 768px ── */
@media (max-width: 768px) {
    /* NAV */
    nav { padding: 0 16px; height: 60px; }
    .nav-logo { font-size: 24px; }
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .nav-actions { gap: 10px; }
    .nav-icon-btn { width: 36px; height: 36px; }
    .mobile-menu { padding: 90px 24px 32px; }
    .mobile-nav-link { font-size: 40px; }

    /* HERO */
    .hero {
        height: auto;
        min-height: 100vh;
        min-height: 100svh;
        padding: 110px 20px 48px;
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
    }
    .hero-content { width: 100%; }
    .hero-visual { display: none; }
    .hero-eyebrow { font-size: 10px; letter-spacing: 3px; }
    .hero-title { font-size: clamp(56px, 18vw, 96px); }
    .hero-desc { font-size: 14px; max-width: 100%; margin-bottom: 28px; }
    .hero-cta { flex-direction: column; width: 100%; gap: 10px; }
    .hero-cta .btn-primary,
    .hero-cta .btn-outline { width: 100%; padding: 16px 0; }
    .hero-stats {
        position: static;
        width: 100%;
        margin-top: 40px;
        justify-content: space-between;
        gap: 12px;
    }
    .stat { text-align: left; }
    .stat-num { font-size: 26px; }
    .stat-label { font-size: 9px; letter-spacing: 1px; }

    /* SECTIONS */
    .features-section,
    .products-section,
    .testimonials-section { padding: 60px 20px; }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 40px;
    }
    .section-title { font-size: clamp(36px, 11vw, 56px); }
    .features-grid { grid-template-columns: 1fr; }
    .feature-card { padding: 32px 24px; }
    .testimonials-grid { grid-template-columns: 1fr; margin-top: 32px; }
    .testimonial-card { padding: 28px 24px; }

    /* PRODUCT CARD */
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .products-grid-full { grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 0 20px 60px; }
    .product-info { padding: 14px; }
    .product-name { font-size: 16px; }
    .product-sub { font-size: 11px; margin-bottom: 10px; }
    .product-footer { flex-direction: column; align-items: flex-start; gap: 8px; }
    .product-price { font-size: 13px; }
    .product-img-inner { font-size: 52px !important; }
    .product-badge { top: 10px; left: 10px; font-size: 8px; padding: 4px 8px; }

    /* PRODUCTS PAGE */
    .page-hero { padding: 100px 20px 32px; }
    .filter-bar { padding: 14px 20px; margin-bottom: 28px; gap: 8px; }
    .filter-btn { padding: 8px 14px; font-size: 9px; }

    /* DETAIL */
    .detail-wrap { padding: 80px 20px 48px; gap: 28px; }
    .detail-main-img { font-size: 80px !important; }
    .detail-thumb { width: 56px; }
    .detail-name { font-size: clamp(32px, 9vw, 44px); }
    .detail-price { font-size: 26px; margin-bottom: 28px; }

    /* CART */
    .cart-wrap { padding: 80px 16px 48px; }
    .cart-header { font-size: 44px; margin-bottom: 28px; }
    .cart-grid { gap: 24px; }
    .cart-item { grid-template-columns: 72px 1fr; gap: 14px; padding: 20px 0; }
    .cart-item-img { font-size: 28px !important; }
    .cart-item-name { font-size: 18px; }
    .cart-item-price { grid-column: 2; text-align: left; font-size: 16px; }
    .order-summary { padding: 24px; }

    /* LOGIN / REGISTER / FORGOT */
    .login-wrap { grid-template-columns: 1fr; }
    .login-visual { display: none; }
    .login-form-wrap { padding: 100px 24px 48px; }
    .login-title { font-size: 40px; }
    .login-sub { margin-bottom: 32px; }

    /* DROPDOWN USER */
    .user-dropdown { right: -8px; }

    /* FOOTER */
    footer { padding: 60px 20px 32px; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; margin-bottom: 40px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 14px; }

    /* TOAST */
    .toast { left: 16px; right: 16px; bottom: 16px; min-width: 0; }
}

/* ── Màn hình rất nhỏ ≤ 380px ── */
@media (max-width: 380px) {
    .products-grid,
    .products-grid-full { grid-template-columns: 1fr; }
    .hero-stats { flex-wrap: wrap; }
}