/* ============================================
   EcoNative Design System - Light Mode
   econative.app
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Light Mode Sage/Earth Palette */
    --color-background: #F5F8F2;
    --color-background-alt: #EDF2E8;
    --color-surface: #FFFFFF;
    --color-surface-elevated: #FAFCF8;
    
    /* Brand Colors */
    --color-primary: #4A7C59;
    --color-primary-hover: #3D6A4C;
    --color-primary-light: rgba(74, 124, 89, 0.1);
    --color-accent: #77AF92;
    --color-accent-light: rgba(119, 175, 146, 0.15);
    --color-gold: #D4A84B;
    --color-gold-light: rgba(212, 168, 75, 0.15);
    
    /* Text Colors */
    --color-text-primary: #1A2E1F;
    --color-text-secondary: #5A6F5E;
    --color-text-muted: #8A9B8E;
    --color-text-inverse: #FFFFFF;
    
    /* Border & Shadow */
    --color-border: rgba(74, 124, 89, 0.15);
    --color-border-strong: rgba(74, 124, 89, 0.3);
    --shadow-sm: 0 1px 2px rgba(26, 46, 31, 0.05);
    --shadow-md: 0 4px 12px rgba(26, 46, 31, 0.08);
    --shadow-lg: 0 8px 24px rgba(26, 46, 31, 0.12);
    --shadow-xl: 0 16px 48px rgba(26, 46, 31, 0.16);
    
    /* Pricing Card Colors */
    --color-bronze-bg: #F8F5F0;
    --color-bronze-accent: #B8956B;
    --color-gold-bg: #FFFBF0;
    --color-gold-accent: #D4A84B;
    --color-founding-bg: #F0F5F2;
    --color-founding-accent: #4A7C59;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Layout */
    --max-width: 1200px;
    --nav-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

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

a {
    color: inherit;
    text-decoration: none;
}

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

ul, ol {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 { font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl)); }
h2 { font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl)); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.text-muted { color: var(--color-text-muted); }
.text-primary-color { color: var(--color-primary); }
.text-gold { color: var(--color-gold); }

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--text-lg);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(245, 248, 242, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: background var(--transition-base);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav-logo-icon {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Mobile Menu */
.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
}

.nav-mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
}

.nav-mobile-menu.active {
    display: block;
}

.nav-mobile-menu a {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
}

.nav-mobile-menu a:last-child {
    border-bottom: none;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-mobile-toggle {
        display: flex;
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-strong);
}

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

.btn-gold {
    background: var(--color-gold);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-md);
}

.btn-gold:hover {
    background: #C49A40;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-strong);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--space-5);
}

.card h3 {
    margin-bottom: var(--space-3);
}

.card p {
    font-size: var(--text-sm);
    margin-bottom: 0;
}

/* ============================================
   Feature Grid
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

/* ============================================
   Phone Mockup / Screenshot Carousel
   ============================================ */
.phone-mockup {
    position: relative;
    width: 280px;
    height: 570px;
    background: #1A2E1F;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #1A2E1F;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    border-radius: 32px;
    overflow: hidden;
    background: var(--color-background);
}

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Screenshot Carousel */
.screenshot-carousel {
    position: relative;
    overflow: hidden;
}

.screenshot-carousel-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.screenshot-carousel-slide {
    flex: 0 0 100%;
}

.screenshot-carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
}

.screenshot-carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--color-border-strong);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.screenshot-carousel-dot.active {
    width: 24px;
    background: var(--color-primary);
}

/* ============================================
   Pricing Cards
   ============================================ */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
    align-items: start;
}

.pricing-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.02);
}

.pricing-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: var(--color-accent);
    color: var(--color-text-inverse);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.pricing-price {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.pricing-price span {
    font-size: var(--text-base);
    font-weight: 400;
    color: var(--color-text-muted);
}

.pricing-features {
    margin: var(--space-6) 0;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.pricing-features li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-card .btn {
    width: 100%;
}

/* Countdown Timer */
.countdown {
    display: flex;
    gap: var(--space-3);
    margin: var(--space-4) 0;
}

.countdown-item {
    background: var(--color-primary-light);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    text-align: center;
    min-width: 60px;
}

.countdown-value {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.countdown-label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--space-4);
}

.form-input {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: var(--color-surface);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-inline {
    display: flex;
    gap: var(--space-3);
}

.form-inline .form-input {
    flex: 1;
}

@media (max-width: 480px) {
    .form-inline {
        flex-direction: column;
    }
    
    .form-inline .btn {
        width: 100%;
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-background-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand p {
    max-width: 300px;
    font-size: var(--text-sm);
}

.footer-links h4 {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.footer-links a {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

/* ============================================
   Legal Pages (Privacy, Terms)
   ============================================ */
.legal-page {
    padding-top: calc(var(--nav-height) + var(--space-12));
    padding-bottom: var(--space-16);
}

.legal-header {
    text-align: center;
    margin-bottom: var(--space-12);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--color-border);
}

.legal-header h1 {
    margin-bottom: var(--space-2);
}

.legal-header .subtitle {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

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

.legal-content h2 {
    font-size: var(--text-xl);
    color: var(--color-primary);
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
}

.legal-content h3 {
    font-size: var(--text-lg);
    margin-top: var(--space-6);
    margin-bottom: var(--space-3);
}

.legal-content p,
.legal-content li {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.legal-content ul {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}

.legal-content li {
    margin-bottom: var(--space-2);
    list-style: disc;
}

.legal-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

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

.legal-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin: var(--space-6) 0;
}

.legal-card.highlight {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.legal-toc {
    margin: var(--space-6) 0;
}

.legal-toc a {
    display: block;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.legal-toc a:last-child {
    border-bottom: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }

@media (max-width: 768px) {
    .md\:hidden { display: none; }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}