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

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #64748b;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-background: #ffffff;
    --color-surface: #f8fafc;
    --color-border: #e2e8f0;
    --color-accent: #f59e0b;
    --font-sans: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Source Serif Pro', Georgia, serif;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* Container */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.btn i {
    font-size: 1.2rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
}

.logo i {
    font-size: 2.75rem;
    color: var(--color-primary);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    font-weight: 500;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero h1 {
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 2rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: #fef3c7;
    color: #92400e;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.hero-badge i {
    font-size: 1rem;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 3rem;
}

#features, #how-it-works, #contact, #store {
    text-align: center;
}

/* Features Grid */
.features {
    background-color: var(--color-surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background-color: var(--color-background);
    padding: 32px 24px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    border-radius: 50%;
}

.feature-icon i {
    font-size: 1.75rem;
    color: var(--color-primary);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

/* Store Section */
.store {
    background-color: var(--color-background);
}

.store-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.store-card {
    background-color: var(--color-surface);
    padding: 40px 32px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    text-align: left;
    transition: all var(--transition);
}

.store-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.store-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    border-radius: 12px;
}

.store-icon i {
    font-size: 1.5rem;
    color: white;
}

.store-card h3 {
    font-size: 1.375rem;
    margin-bottom: 12px;
}

.store-card > p {
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.store-list {
    list-style: none;
}

.store-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--color-text);
    font-size: 0.9375rem;
}

.store-list i {
    color: #10b981;
    font-size: 1rem;
}

/* How It Works */
.steps {
    display: flex;
    justify-content: center;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    max-width: 280px;
    text-align: center;
}

.step-number {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: white;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    border-radius: 50%;
}

.step-content p {
    color: var(--color-text-light);
}

/* Contact Section */
.contact {
    background-color: var(--color-surface);
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: 12px;
}

.form-group input {
    flex: 1;
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color var(--transition);
}

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

/* Footer */
.footer {
    background-color: var(--color-text);
    color: white;
    padding: 48px 0 24px;
}

.footer-content {
    text-align: center;
    margin-bottom: 32px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-logo i {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.footer-tagline {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #334155;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .header .container {
        height: 64px;
    }

    .nav {
        display: none;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .store-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 32px;
    }

    .form-group {
        flex-direction: column;
    }

    section {
        padding: 60px 0;
    }
}