/* Sparkin Coffee - Luckin-inspired Visual Theme */

:root {
    /* Colors - Luckin-inspired */
    --primary-blue: #003B8F;
    --blue-hover: #002B69;
    --main-bg: #FFFFFF;
    --alt-bg: #F2F6FC;
    --main-text: #15243B;
    --secondary-text: #536176;
    --border: #DCE5F0;

    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--main-bg);
    color: var(--main-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: min(90%, 1200px);
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--main-text);
}

h1 { font-size: clamp(2.5rem, 8vw, 4rem); }
h2 { font-size: clamp(2rem, 6vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 4vw, 1.5rem); }

p {
    color: var(--secondary-text);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: var(--main-bg);
    color: var(--main-text);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: 0.5px;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--main-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-link.active {
    color: var(--primary-blue);
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 59, 143, 0.15);
}

.btn-primary:hover {
    background: var(--blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 59, 143, 0.25);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--main-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
}

.hamburger::before { transform: translateY(-8px); }
.hamburger::after { transform: translateY(8px); }

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--main-bg);
    padding-top: 6rem;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    line-height: 1.1;
    color: var(--main-text);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary-text);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
    transition: transform 0.5s ease;
}

.hero-thumbnails {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    justify-content: center;
}

.hero-thumbnails .thumb {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.hero-thumbnails .thumb:hover,
.hero-thumbnails .thumb.active {
    border-color: var(--primary-blue);
}

/* Features Section */
.features {
    background: var(--alt-bg);
    padding: var(--spacing-xl) 0;
    margin-top: 4rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    border: 2px solid var(--border);
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

/* Section Styles */
.section-title {
    text-align: center;
    color: var(--main-text);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.section-subtitle {
    text-align: center;
    color: var(--secondary-text);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* Plans Section */
.plans {
    padding: var(--spacing-xl) 0;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.plan-card {
    background: white;
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid var(--border);
}

.plan-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.plan-card.featured {
    border: 2px solid var(--primary-blue);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--primary-blue);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.plan-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--main-text);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.1rem;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-lg);
}

.currency { font-size: 1rem; color: var(--secondary-text); }
.amount { font-size: 3rem; font-weight: 800; color: var(--primary-blue); }
.period { font-size: 0.9rem; color: var(--secondary-text); }

.plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.plan-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--main-text);
    font-size: 0.95rem;
}

.plan-features li:last-child {
    border-bottom: none;
}

/* Menu Section */
.menu {
    background: var(--main-bg);
    padding: var(--spacing-xl) 0;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.menu-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    border: 2px solid var(--border);
}

.menu-item:hover {
    transform: translateY(-5px);
}

.menu-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.menu-info {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.menu-info h3 {
    font-size: 1.25rem;
    color: var(--main-text);
}

.menu-info p.price {
    color: var(--primary-blue);
    font-weight: 600;
}

/* Location Section */
.locations {
    padding: var(--spacing-xl) 0;
}

.locations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.location-card {
    background: white;
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
    border: 2px solid var(--border);
}

.location-card:hover {
    transform: translateY(-5px);
}

.location-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--main-text);
}

.address {
    color: var(--secondary-text);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.hours {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

/* FAQ Section */
.faq {
    background: var(--alt-bg);
    padding: var(--spacing-xl) 0;
}

.faq-item {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
}

.faq-item h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--main-text);
}

.faq-item p {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: var(--main-bg);
    color: var(--secondary-text);
    padding: var(--spacing-lg) 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-links a {
    display: inline-block;
    padding: 0.5rem;
    font-size: 1.5rem;
    color: var(--main-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .nav.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--main-bg);
        padding: var(--spacing-md);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--border);
    }
}