/* CSS Variables for easy customization */
:root {
    /* Brand Colors */
    --primary-gradient-start: #6C63FF;
    --primary-gradient-end: #7C3AED;
    --accent-gold: #FFD54A;
    
    /* Neutrals */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-8);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
}

@media (min-width: 768px) {
    h1 {
        font-size: var(--font-size-5xl);
    }
}

@media (min-width: 1024px) {
    h1 {
        font-size: var(--font-size-6xl);
    }
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

@media (min-width: 768px) {
    h2 {
        font-size: var(--font-size-4xl);
    }
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--gray-600);
}

/* Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--accent-gold), #FFB74D);
    color: var(--gray-900);
    box-shadow: var(--shadow-md);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.cta-button.secondary:hover {
    background: var(--white);
    color: var(--gray-900);
}

.cta-button i {
    width: 16px;
    height: 16px;
}



/* Main Navigation */
.main-nav {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow var(--transition-normal);
}

.main-nav.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--gray-900);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.nav-links {
    display: none;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--gray-900);
}

.mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    padding: var(--spacing-2);
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle i {
    width: 20px;
    height: 20px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: var(--white);
    padding: var(--spacing-16) 0;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-24) 0;
    }
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-waves {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr 1.5fr;
        gap: var(--spacing-16);
    }
}

.hero-text h1 {
    color: var(--white);
    margin-bottom: var(--spacing-6);
}

.eyebrow {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: 9999px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-6);
    backdrop-filter: blur(10px);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-8);
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 640px) {
    .hero-ctas {
        flex-direction: row;
        gap: var(--spacing-4);
    }
}

.app-badges {
    display: flex;
    gap: var(--spacing-4);
}

.badge {
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(var(--shadow-xl));
    transition: transform var(--transition-slow);
}

.phone-mockup:hover {
    transform: translateY(-10px);
}

.hero-header-image {
    max-width: 150%;
    height: auto;
    filter: drop-shadow(var(--shadow-xl));
    transition: transform var(--transition-slow);
    border-radius: var(--radius-xl);
    transform: scale(1.3);
}

.hero-header-image:hover {
    transform: translateY(-10px) scale(1.4);
}

/* Phone Placeholder Styles */
.phone-placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-frame {
    width: 200px;
    height: 400px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 25px;
    padding: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #333;
    border-radius: 2px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #6C63FF, #7C3AED);
    border-radius: 17px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.app-preview {
    text-align: center;
    color: white;
}

.app-header {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.app-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bottle-item,
.feature-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

@media (min-width: 768px) {
    .phone-frame {
        width: 250px;
        height: 500px;
    }
    
    .app-header {
        font-size: 22px;
    }
    
    .bottle-item,
    .feature-item {
        font-size: 14px;
        padding: 10px 16px;
    }
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-header h2 {
    margin-bottom: var(--spacing-4);
    font-weight: 700;
    color: var(--gray-900);
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.feature-cards {
    display: grid;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .feature-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-8);
    }
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-6);
}

.feature-icon i {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.feature-card h3 {
    margin-bottom: var(--spacing-3);
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    margin: 0;
}

/* Big Features Section */
.big-features {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: var(--white);
}

.big-features .section-header h2 {
    color: var(--white);
}

.features-layout {
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .features-layout {
        grid-template-columns: 1fr auto 1fr;
        gap: var(--spacing-16);
    }
}

.features-left,
.features-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

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

.feature-block {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal);
}

.feature-block:hover {
    transform: translateX(4px);
}

.feature-block .feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
}

.feature-block .feature-icon i {
    width: 24px;
    height: 24px;
}

.feature-content h3 {
    color: var(--white);
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-lg);
}

.feature-content p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: var(--font-size-sm);
}

/* Screens Section */
.screens {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.screens-grid {
    display: grid;
    gap: var(--spacing-8);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .screens-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-12);
    }
}

@media (min-width: 1024px) {
    .screens-grid {
        gap: var(--spacing-16);
    }
}

.screen-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--gray-200);
}

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

.screen-card img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    min-height: 400px;
}

.screen-card h3 {
    padding: var(--spacing-6) var(--spacing-6) var(--spacing-2);
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-900);
}

.screen-card p {
    padding: 0 var(--spacing-6) var(--spacing-6);
    margin: 0;
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* Tech Section */
.tech {
    padding: var(--spacing-20) 0;
    background: var(--gray-50);
}

.tech-grid {
    display: grid;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-12);
    }
}

.tech-card {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.tech-card h3 {
    margin-bottom: var(--spacing-6);
    color: var(--gray-900);
}

.tech-card ul {
    list-style: none;
    padding: 0;
}

.tech-card li {
    padding: var(--spacing-2) 0;
    color: var(--gray-600);
    position: relative;
    padding-left: var(--spacing-6);
}

.tech-card li::before {
    content: "•";
    color: var(--primary-gradient-start);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Final CTA Section */
.final-cta {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    color: var(--white);
    text-align: center;
}

.final-cta h2 {
    color: var(--white);
    margin-bottom: var(--spacing-8);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    align-items: center;
}

@media (min-width: 640px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-4);
    }
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-12) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    align-items: center;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    align-items: center;
}

@media (min-width: 768px) {
    .footer-left {
        align-items: flex-start;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    color: var(--white);
    font-weight: 700;
}

.footer-right {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-right a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Mobile Menu */
.nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-lg);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
.cta-button:focus,
.nav-link:focus,
.email-link:focus,
.mobile-menu-toggle:focus {
    outline: 2px solid var(--primary-gradient-start);
    outline-offset: 2px;
}

/* Lazy loading */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Print styles */
@media print {
    .utility-bar,
    .main-nav,
    .cta-button,
    .footer {
        display: none;
    }
    
    .hero {
        background: var(--gray-100) !important;
        color: var(--gray-900) !important;
    }
    
    .big-features,
    .final-cta {
        background: var(--gray-100) !important;
        color: var(--gray-900) !important;
    }
}