/* =============================================
   ARTHZZ.COM - Complete Multi-Page Stylesheet
   World's First Men's Electronic Nail Polish
   ============================================= */

/* ===== CSS Variables ===== */
:root {
    --primary: #00f5d4;
    --primary-dark: #00c4a8;
    --secondary: #7b61ff;
    --accent: #ff4d6a;
    --dark: #0a0a0f;
    --dark-2: #12121a;
    --dark-3: #1a1a26;
    --gray: #8a8a9a;
    --gray-light: #c8c8d4;
    --white: #f0f0f5;
    --gradient-1: linear-gradient(135deg, #00f5d4, #7b61ff);
    --gradient-2: linear-gradient(135deg, #ff4d6a, #ffa64d);
    --gradient-3: linear-gradient(135deg, #7b61ff, #00f5d4);
    --shadow: 0 8px 32px rgba(0, 245, 212, 0.15);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.4);
    --radius: 16px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 2px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    -webkit-text-fill-color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--gray);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: 2s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 245, 212, 0.1);
    border: 1px solid rgba(0, 245, 212, 0.3);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-light);
    margin-bottom: 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 48px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 13px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.hero-product {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.product-showcase {
    position: relative;
}

.nail-preview {
    width: 300px;
    height: 500px;
    background: var(--dark-2);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.nail-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 245, 212, 0.05), rgba(123, 97, 255, 0.05));
    z-index: 0;
}

.nail-img {
    width: 200px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    transition: all 0.5s ease;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-lg);
}

.color-selector {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}

.color-dot {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
    cursor: pointer;
}

.color-dot:hover, .color-dot.active {
    transform: scale(1.2);
    border-color: var(--white);
    box-shadow: 0 0 20px currentColor;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--dark);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 245, 212, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-full {
    width: 100%;
}

/* ===== Section Common ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 900;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Product Section ===== */
.product-section {
    padding: 120px 0;
    background: var(--dark-2);
}

.product-grid {
    display: flex;
    justify-content: center;
}

.product-card {
    max-width: 900px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: var(--dark-3);
    padding: 48px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-img {
    position: relative;
}

.product-placeholder {
    aspect-ratio: 1;
    background: var(--dark-2);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.nail-set-visual {
    display: flex;
    gap: 8px;
    padding: 20px;
}

.nail-piece {
    width: 40px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 20px;
    opacity: 0.8;
    animation: nailPulse 2s ease-in-out infinite;
}

.nail-piece:nth-child(2) { animation-delay: 0.2s; background: var(--gradient-2); }
.nail-piece:nth-child(3) { animation-delay: 0.4s; }
.nail-piece:nth-child(4) { animation-delay: 0.6s; background: var(--gradient-2); }
.nail-piece:nth-child(5) { animation-delay: 0.8s; }

@keyframes nailPulse {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.05); }
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 6px 16px;
    background: var(--accent);
    color: var(--white);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: var(--radius-full);
}

.product-info h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.product-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

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

.product-price {
    margin-bottom: 24px;
}

.price {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-note {
    display: block;
    font-size: 13px;
    color: var(--gray);
    margin-top: 4px;
}

.preorder-note {
    font-size: 13px;
    color: var(--gray);
    margin-top: 12px;
}

/* ===== How Section ===== */
.how-section {
    padding: 120px 0;
    background: var(--dark);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    background: var(--dark-2);
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.step-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 245, 212, 0.2);
    box-shadow: var(--shadow);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    margin-bottom: 16px;
}

.step-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.step-card h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== Colors Section ===== */
.colors-section {
    padding: 120px 0;
    background: var(--dark-2);
}

.color-categories {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.color-cat {
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--gray);
    background: var(--dark-3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.color-cat:hover, .color-cat.active {
    background: var(--primary);
    color: var(--dark);
    border-color: var(--primary);
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 16px;
    margin-bottom: 48px;
}

.color-swatch {
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--white);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.color-swatch::after {
    content: attr(data-name);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--white);
    background: rgba(0, 0, 0, 0.8);
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.color-swatch:hover::after {
    bottom: 8px;
    opacity: 1;
}

.colors-cta {
    text-align: center;
}

/* ===== About Section ===== */
.about-section {
    padding: 120px 0;
    background: var(--dark);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content {
    max-width: 500px;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 40px;
}

.value {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.value-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.value h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.value p {
    font-size: 14px;
    color: var(--gray);
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-img-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--dark-2);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.brand-mockup {
    text-align: center;
}

.mockup-text {
    font-family: var(--font-heading);
    font-size: 64px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mockup-tagline {
    font-size: 14px;
    color: var(--gray);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 8px;
}

/* ===== Testimonials ===== */
.testimonials-section {
    padding: 120px 0;
    background: var(--dark-2);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    background: var(--dark-3);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 245, 212, 0.2);
}

.testimonial-stars {
    color: #FFD700;
    font-size: 18px;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 15px;
    color: var(--gray-light);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author strong {
    display: block;
    font-size: 14px;
    font-weight: 700;
}

.testimonial-author span {
    font-size: 13px;
    color: var(--gray);
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 120px 0;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(0, 245, 212, 0.05) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-heading);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 900;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 40px;
}

.cta-form {
    display: flex;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto 16px;
}

.email-input {
    flex: 1;
    padding: 14px 20px;
    background: var(--dark-2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.email-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}

.email-input::placeholder {
    color: var(--gray);
}

.cta-note {
    font-size: 13px;
    color: var(--primary);
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 120px 0;
    background: var(--dark-2);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 20px;
    background: var(--dark-3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.info-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.info-item h4 {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-item p {
    font-size: 14px;
    color: var(--gray);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    padding: 8px 16px;
    background: var(--dark-3);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--gray);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    color: var(--dark);
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 32px;
    background: var(--dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 900;
    margin-bottom: 16px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.footer-social a {
    padding: 8px 16px;
    background: var(--dark-2);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    color: var(--gray);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--dark);
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: var(--gray);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 13px;
    color: var(--gray);
}

.footer-policy {
    display: flex;
    gap: 24px;
}

.footer-policy a {
    color: var(--gray);
    transition: var(--transition);
}

.footer-policy a:hover {
    color: var(--primary);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out both;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-product {
        display: none;
    }
    
    .product-card {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--dark);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 999;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1001;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-form {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .product-card {
        padding: 24px;
    }
}

/* ============================================
   MULTI-PAGE EXTENSIONS
   ============================================ */

/* ===== Page Header (Inner Pages) ===== */
.page-header {
    padding: 140px 0 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--dark);
}

.page-header::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 245, 212, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.page-header .section-tag {
    margin-bottom: 16px;
}

.page-header .section-title {
    margin-bottom: 12px;
}

.page-header .section-desc {
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    font-size: 13px;
    color: var(--gray);
}

.breadcrumb a {
    color: var(--primary);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.2);
}

.breadcrumb .current {
    color: var(--gray-light);
}

/* ===== Active Nav Link ===== */
.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    width: 100%;
}

/* ===== Product Catalog (products.html) ===== */
.product-catalog {
    padding: 80px 0;
    background: var(--dark-2);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}

.catalog-card {
    background: var(--dark-3);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.catalog-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 245, 212, 0.3);
    box-shadow: var(--shadow);
}

.catalog-card-img {
    width: 100%;
    aspect-ratio: 4/3;
    background: var(--dark-2);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.catalog-card-img .placeholder-visual {
    font-size: 64px;
    opacity: 0.6;
    transition: var(--transition);
}

.catalog-card:hover .placeholder-visual {
    transform: scale(1.1);
    opacity: 1;
}

.catalog-card-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.badge-new {
    background: var(--primary);
    color: var(--dark);
}

.badge-hot {
    background: var(--accent);
    color: var(--white);
}

.badge-bundle {
    background: var(--secondary);
    color: var(--white);
}

.catalog-card-body {
    padding: 24px;
}

.catalog-card-body h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.catalog-card-body .card-desc {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.catalog-card-body .card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.card-feature-tag {
    padding: 4px 10px;
    background: rgba(0, 245, 212, 0.1);
    border-radius: var(--radius-full);
    font-size: 11px;
    color: var(--primary);
    white-space: nowrap;
}

.catalog-card-body .card-price-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.catalog-card-body .card-price {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.catalog-card-body .btn-sm {
    padding: 8px 20px;
    font-size: 12px;
}

/* ===== Product Detail Hero ===== */
.product-detail-hero {
    padding: 140px 0 80px;
    background: var(--dark);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.product-detail-visual {
    aspect-ratio: 1;
    background: var(--dark-2);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-detail-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(0, 245, 212, 0.05), transparent 70%);
}

.product-detail-info .product-badge-row {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.product-detail-info h1 {
    font-family: var(--font-heading);
    font-size: 40px;
    font-weight: 900;
    margin-bottom: 12px;
}

.product-detail-info .subtitle {
    font-size: 16px;
    color: var(--gray-light);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-detail-info .detail-specs {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.detail-spec {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--gray-light);
}

.detail-spec .spec-dot {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

.product-detail-info .detail-price {
    font-family: var(--font-heading);
    font-size: 42px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.product-detail-info .detail-price-note {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 24px;
    display: block;
}

.product-detail-info .detail-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== About Page (about.html) ===== */
.about-hero-section {
    padding: 80px 0;
    background: var(--dark);
}

.about-mission {
    padding: 80px 0;
    background: var(--dark-2);
}

.mission-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.mission-content blockquote {
    font-size: 24px;
    font-weight: 300;
    color: var(--gray-light);
    line-height: 1.6;
    font-style: italic;
    border-left: 3px solid var(--primary);
    padding-left: 32px;
    margin: 32px 0;
    text-align: left;
}

.mission-content cite {
    display: block;
    font-size: 14px;
    color: var(--primary);
    font-style: normal;
    margin-top: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===== Team Section ===== */
.team-section {
    padding: 80px 0;
    background: var(--dark);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 32px;
}

.team-card {
    background: var(--dark-2);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 245, 212, 0.2);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gradient-1);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.team-card h3 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.team-card .team-role {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 12px;
}

.team-card .team-bio {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
}

/* ===== Timeline ===== */
.timeline-section {
    padding: 80px 0;
    background: var(--dark-2);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: rgba(0, 245, 212, 0.2);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 48px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-right: calc(50% + 32px);
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: calc(50% + 32px);
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--dark-2);
    z-index: 2;
}

.timeline-content {
    background: var(--dark-3);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.timeline-content .year {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
}

/* ===== Contact Page (contact.html) ===== */
.contact-page-section {
    padding: 80px 0;
    background: var(--dark);
}

.contact-page-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-page-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-method {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-method-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: rgba(0, 245, 212, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    border: 1px solid rgba(0, 245, 212, 0.2);
}

.contact-method-text h4 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.contact-method-text p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.contact-form-card {
    background: var(--dark-2);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form-card h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.contact-form-card .form-subtitle {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-select {
    width: 100%;
    padding: 14px 20px;
    background: var(--dark-3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--gray);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238a8a9a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 16px;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary);
    flex-shrink: 0;
}

.form-checkbox label {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.5;
}

/* ===== FAQ Page (faq.html) ===== */
.faq-section {
    padding: 80px 0;
    background: var(--dark);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-categories {
    display: flex;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
    justify-content: center;
}

.faq-cat {
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--gray);
    background: var(--dark-2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: var(--transition);
}

.faq-cat:hover, .faq-cat.active {
    background: var(--primary);
    color: var(--dark);
    border-color: var(--primary);
}

.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question .faq-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
    color: var(--primary);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-question .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 20px;
}

.faq-answer p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

/* ===== Policy Pages (shipping/returns/privacy/terms) ===== */
.policy-section {
    padding: 80px 0;
    background: var(--dark);
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
}

.policy-content h2 {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 900;
    margin-top: 48px;
    margin-bottom: 16px;
}

.policy-content h2:first-child {
    margin-top: 0;
}

.policy-content h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--primary);
}

.policy-content p {
    font-size: 14px;
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

.policy-content ul {
    margin-bottom: 16px;
    padding-left: 24px;
}

.policy-content li {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 8px;
}

.policy-content .last-updated {
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Table Styles (Shipping Rates) ===== */
.rate-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 32px;
    font-size: 14px;
}

.rate-table thead th {
    background: var(--dark-2);
    padding: 14px 20px;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 2px solid rgba(0, 245, 212, 0.2);
}

.rate-table tbody td {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--gray-light);
}

.rate-table tbody tr:hover td {
    background: rgba(0, 245, 212, 0.03);
}

/* ===== Blog/News Page ===== */
.blog-section {
    padding: 80px 0;
    background: var(--dark);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}

.blog-card {
    background: var(--dark-2);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.blog-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 245, 212, 0.2);
    box-shadow: var(--shadow);
}

.blog-card-img {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--dark-3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.blog-card-body {
    padding: 24px;
}

.blog-card-body .blog-category {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 245, 212, 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.blog-card-body h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.blog-card-body .blog-excerpt {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.blog-card-body .blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 12px;
    color: var(--gray);
}

/* ===== Enhanced Responsive Rules ===== */
@media (max-width: 1024px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline::before {
        left: 24px;
    }
    
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding-left: 56px;
        padding-right: 0;
        flex-direction: row;
    }
    
    .timeline-dot {
        left: 24px;
    }
}

@media (max-width: 768px) {
    .catalog-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-page-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-detail-info h1 {
        font-size: 32px;
    }
    
    .rate-table {
        font-size: 12px;
    }
    
    .rate-table thead th,
    .rate-table tbody td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .catalog-grid {
        grid-template-columns: 1fr;
    }
}
/* ===== Language Switcher ===== */
.lang-switcher {
    position: relative;
    margin-left: 16px;
}

.lang-btn {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: rgba(0,245,212,0.15);
    border-color: #00f5d4;
}

.lang-arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
}

.lang-switcher.open .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: #1a1a2e;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    padding: 6px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.25s ease;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 14px;
    background: none;
    border: none;
    color: #ccc;
    font-size: 13px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.lang-option:hover {
    background: rgba(0,245,212,0.1);
    color: #00f5d4;
}

.lang-option.active {
    color: #00f5d4;
    background: rgba(0,245,212,0.08);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .lang-switcher {
        margin-left: 0;
        margin-top: 12px;
    }
    .lang-dropdown {
        right: auto;
        left: 0;
    }
}