/* ==========================================
   ZENITH DRINKS - Premium Tumbler Brand
   CSS Stylesheet
   ========================================== */

/* CSS Variables */
:root {
    --primary: #1a1a2e;
    --primary-light: #16213e;
    --accent: #e94560;
    --accent-light: #ff6b6b;
    --gold: #d4af37;
    --gold-light: #f4d03f;
    --text-dark: #1a1a2e;
    --text-light: #6b7280;
    --text-white: #ffffff;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
    --bg-dark: #0f0f1a;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--text-white);
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(233, 69, 96, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-white);
}

.btn-white {
    background: var(--bg-white);
    color: var(--primary);
}

.btn-white:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: var(--text-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'Playfair Display', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: 2px;
}

.navbar.scrolled .logo {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.navbar.scrolled .nav-links a {
    color: var(--text-light);
}

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

.navbar.scrolled .nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    background: var(--accent);
    color: var(--text-white) !important;
    padding: 10px 24px;
    border-radius: var(--radius-xl);
}

.btn-nav:hover {
    background: var(--accent-light);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
    transition: var(--transition);
}

.navbar.scrolled .hamburger span {
    background: var(--primary);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--bg-dark) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(233, 69, 96, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    padding: 40px 0;
}

.hero-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent-light);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: var(--radius-xl);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(40px, 5vw, 64px);
    color: var(--text-white);
    margin-bottom: 24px;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    height: 500px;
}

.tumbler-showcase {
    position: relative;
    width: 100%;
    height: 100%;
}

.tumbler {
    position: absolute;
    width: 120px;
    height: 280px;
    border-radius: 20px 20px 30px 30px;
    box-shadow: var(--shadow-xl);
}

.tumbler-1 {
    background: linear-gradient(180deg, #e94560 0%, #c73e54 100%);
    left: 10%;
    top: 10%;
    transform: rotate(-10deg);
    animation: float 6s ease-in-out infinite;
}

.tumbler-2 {
    background: linear-gradient(180deg, #d4af37 0%, #b8962e 100%);
    left: 35%;
    top: 5%;
    width: 140px;
    height: 320px;
    z-index: 2;
    animation: float 6s ease-in-out infinite 0.5s;
}

.tumbler-3 {
    background: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
    right: 10%;
    top: 15%;
    transform: rotate(10deg);
    animation: float 6s ease-in-out infinite 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(var(--rotation, 0deg)); }
    50% { transform: translateY(-20px) rotate(var(--rotation, 0deg)); }
}

.tumbler-1 { --rotation: -10deg; }
.tumbler-3 { --rotation: 10deg; }

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(233, 69, 96, 0.1), rgba(212, 175, 55, 0.1));
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    border-radius: var(--radius-xl);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(32px, 4vw, 48px);
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-light);
    font-size: 17px;
}

/* Products Section */
.products {
    background: var(--bg-light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-card.featured {
    border: 2px solid var(--gold);
}

.product-image {
    position: relative;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--accent);
    color: var(--text-white);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-xl);
}

.tumbler-preview {
    width: 80px;
    height: 200px;
    border-radius: 12px 12px 20px 20px;
    box-shadow: var(--shadow-md);
}

.gradient-1 { background: linear-gradient(180deg, #e94560, #c73e54); }
.gradient-2 { background: linear-gradient(180deg, #d4af37, #b8962e); }
.gradient-3 { background: linear-gradient(180deg, #1a1a2e, #0f0f1a); }
.gradient-4 { background: linear-gradient(180deg, #667eea, #764ba2); }
.gradient-5 { background: linear-gradient(180deg, #11998e, #38ef7d); }
.gradient-6 { background: linear-gradient(180deg, #ee0979, #ff6a00); }

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.product-info > p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 16px;
}

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

.product-features span {
    padding: 4px 12px;
    background: var(--bg-light);
    color: var(--text-light);
    font-size: 12px;
    border-radius: var(--radius-sm);
}

/* Features Section */
.features {
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: var(--radius-md);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-white);
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* Customization Section */
.customize {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--text-white);
}

.customize-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.customize-text .section-tag {
    background: rgba(233, 69, 96, 0.2);
    color: var(--accent-light);
}

.customize-text h2 {
    font-size: clamp(32px, 4vw, 44px);
    margin-bottom: 20px;
}

.customize-text > p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
}

.customize-list {
    margin-bottom: 32px;
}

.customize-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
}

.customize-list svg {
    width: 20px;
    height: 20px;
    stroke: var(--gold);
    flex-shrink: 0;
}

.customization-showcase {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.showcase-item {
    text-align: center;
}

.showcase-tumbler {
    width: 90px;
    height: 220px;
    border-radius: 14px 14px 22px 22px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.showcase-item:hover .showcase-tumbler {
    transform: translateY(-10px);
}

.showcase-item span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

/* Testimonials */
.testimonials {
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
}

.stars {
    color: var(--gold);
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card > p {
    color: var(--text-dark);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.author-info strong {
    display: block;
    font-size: 14px;
}

.author-info span {
    font-size: 12px;
    color: var(--text-light);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--accent) 0%, #c73e54 100%);
    text-align: center;
    color: var(--text-white);
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 16px;
}

.cta-content > p {
    font-size: 17px;
    opacity: 0.9;
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 40px;
}

.cta-trust {
    display: flex;
    gap: 40px;
    justify-content: center;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    opacity: 0.9;
}

.trust-item svg {
    width: 20px;
    height: 20px;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
    display: inline-block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 24px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent);
}

.social-links svg {
    width: 18px;
    height: 18px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
    color: var(--text-white);
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--text-white);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

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

.footer-legal a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

.footer-legal a:hover {
    color: var(--text-white);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        padding: 120px 0 60px;
    }

    .hero p {
        margin: 0 auto 40px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        display: none;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .customize-content {
        grid-template-columns: 1fr;
    }

    .customize-text {
        text-align: center;
    }

    .customize-list {
        display: inline-block;
        text-align: left;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .products-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .customization-showcase {
        flex-wrap: wrap;
    }

    .cta-trust {
        flex-direction: column;
        gap: 16px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    section {
        padding: 60px 0;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}