/* Main CSS for MoodMonkey Website */

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

:root {
    /* Brand Colors - Improved palette */
    --primary-blue: #6366F1;
    --primary-purple: #8B5CF6;
    --primary-cyan: #06B6D4;
    --accent-warm: #F59E0B;
    --dark-bg: #0F0F23;
    --dark-secondary: #1E1B3A;
    --dark-tertiary: #2D2A4A;
    
    /* Semantic Colors */
    --text-primary: #F8FAFC;
    --text-secondary: rgba(248, 250, 252, 0.8);
    --text-muted: rgba(248, 250, 252, 0.6);
    --text-accent: #A5B4FC;
    --border-color: rgba(99, 102, 241, 0.2);
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    --gradient-secondary: linear-gradient(135deg, var(--dark-secondary), var(--dark-tertiary));
    --gradient-hero: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--primary-cyan), var(--accent-warm));
    --gradient-text: linear-gradient(135deg, var(--primary-blue), var(--primary-cyan));
    
    /* Typography */
    --font-family-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-heading: 'Space Grotesk', 'Plus Jakarta Sans', sans-serif;
    --font-family: var(--font-family-primary);
    --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 */
    --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;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.4);
    --shadow-purple: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* Animation */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 80px;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-primary);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

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

.section-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-6);
    font-weight: 800;
    letter-spacing: -0.04em;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
    font-weight: 500;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    height: var(--header-height);
    transition: var(--transition-base);
}

.nav.scrolled {
    background: rgba(17, 24, 39, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.nav-logo {
    width: 40px;
    height: 40px;
}

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

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

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

.nav-link.nav-cta {
    background: var(--gradient-primary);
    color: var(--dark-bg);
    padding: var(--space-2) var(--space-4);
    border-radius: 8px;
    font-weight: 600;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-base);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--dark-secondary);
        flex-direction: column;
        padding: var(--space-6);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-container {
        padding: 0 var(--space-4);
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(174,226,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: var(--space-2) var(--space-4);
    border-radius: 50px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-6);
    backdrop-filter: blur(10px);
}

.badge-icon {
    font-size: var(--font-size-base);
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 40px;
    padding: 20px;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    animation: float 6s ease-in-out infinite;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--dark-secondary);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    animation: float 4s ease-in-out infinite;
    pointer-events: none;
}

.mood-happy {
    top: 10%;
    right: 10%;
    animation-delay: -1s;
}

.mood-calm {
    bottom: 20%;
    left: 5%;
    animation-delay: -2s;
}

.mood-excited {
    top: 30%;
    left: -5%;
    animation-delay: -0.5s;
}

.mood-thoughtful {
    bottom: 10%;
    right: 15%;
    animation-delay: -1.5s;
}

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
}

/* Features Section */
.features {
    padding: var(--space-24) 0;
    background: var(--dark-secondary);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-8);
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

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

.feature-card:hover::before {
    opacity: 1;
}

.feature-card.feature-primary {
    background: linear-gradient(135deg, rgba(174, 226, 255, 0.1), rgba(254, 208, 73, 0.05));
    border-color: var(--primary-blue);
}

.feature-card.feature-primary::before {
    opacity: 1;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.feature-icon .icon {
    width: 32px;
    height: 32px;
    color: var(--dark-bg);
    stroke-width: 2;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

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

.feature-list li {
    padding: var(--space-2) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

/* Security Section */
.security-section {
    padding: var(--space-24) 0;
    background: var(--dark-bg);
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

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

.security-shield {
    position: relative;
    width: 200px;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-layers {
    position: absolute;
    width: 100%;
    height: 100%;
}

.layer {
    position: absolute;
    border: 2px solid;
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    animation: pulse 3s ease-in-out infinite;
}

.layer-1 {
    width: 100%;
    height: 100%;
    border-color: var(--primary-blue);
    opacity: 0.3;
}

.layer-2 {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-color: var(--primary-yellow);
    opacity: 0.5;
    animation-delay: -1s;
}

.layer-3 {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-color: var(--primary-orange);
    opacity: 0.7;
    animation-delay: -2s;
}

.shield-icon {
    font-size: 4rem;
    z-index: 1;
    animation: glow 2s ease-in-out infinite alternate;
}

.security-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.security-feature {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}

.security-feature-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.security-feature-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.security-feature-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-badges {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.badge img {
    height: 60px;
    opacity: 0.8;
    transition: var(--transition-base);
}

.badge:hover img {
    opacity: 1;
}

@media (max-width: 768px) {
    .security-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
}

/* Analytics Section */
.analytics-section {
    padding: var(--space-24) 0;
    background: var(--dark-secondary);
}

.analytics-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.analytics-visual {
    position: relative;
}

.chart-container {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    backdrop-filter: blur(10px);
}

.mood-chart {
    width: 100%;
    height: 300px;
}

.analytics-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.analytics-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-4);
    text-align: center;
    backdrop-filter: blur(10px);
}

.card-metric {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-blue);
}

.card-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.analytics-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.analytics-feature h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.analytics-feature p {
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .analytics-showcase {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .analytics-cards {
        grid-template-columns: 1fr;
    }
}

/* Testimonials */
.testimonials {
    padding: var(--space-24) 0;
    background: var(--dark-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-8);
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.testimonial-content {
    margin-bottom: var(--space-6);
}

.stars {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
}

.testimonial-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--dark-bg);
}

.author-name {
    font-weight: 600;
}

.author-title {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Download Section */
.download-section {
    padding: var(--space-24) 0;
    background: var(--dark-secondary);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.download-features {
    margin: var(--space-8) 0;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.feature-check {
    width: 24px;
    height: 24px;
    background: var(--primary-blue);
    color: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.download-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.download-btn img {
    height: 60px;
    transition: var(--transition-base);
}

.download-btn:hover img {
    transform: scale(1.05);
}

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

.phones-showcase {
    position: relative;
    width: 300px;
    height: 400px;
}

.phone {
    position: absolute;
    width: 200px;
    height: 350px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 30px;
    padding: 15px;
    box-shadow: var(--shadow-xl);
}

.phone-1 {
    left: 0;
    top: 0;
    z-index: 2;
    animation: float 4s ease-in-out infinite;
}

.phone-2 {
    right: 0;
    bottom: 0;
    z-index: 1;
    animation: float 4s ease-in-out infinite;
    animation-delay: -2s;
}

.phone img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
}

@media (max-width: 768px) {
    .download-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-4);
}

.footer-logo img {
    width: 32px;
    height: 32px;
}

.footer-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: var(--font-size-lg);
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--primary-blue);
    color: var(--dark-bg);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-1) 0;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}