/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Brand Colors */
    --brand-pink: #FFAFD7;
    --brand-coral: #FFB69F;
    --brand-peach: #FFBA80;
    --brand-orange: #FFC04C;
    --brand-yellow: #FFC331;
    --brand-blue: #0082FC;
    --brand-blue-dark: #0066CC;
    
    /* Gradient Colors */
    --gradient-start: #FFAFD7;
    --gradient-middle: #FFB990;
    --gradient-end: #FFC331;
    
    /* Background Colors */
    --bg-light: #FFF8FB;
    --bg-white: #FFFFFF;
    --surface-light: #FFFAFD;
    
    /* Text Colors */
    --text-primary: #2C2C2C;
    --text-secondary: #666666;
    --text-disabled: #999999;
    --text-on-gradient: #FFFFFF;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Spacing */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.nav {
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

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

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-middle) 50%, var(--gradient-end) 100%);
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
    opacity: 0.5;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-on-gradient);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-on-gradient);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

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

.hero-note {
    color: var(--text-on-gradient);
    opacity: 0.8;
    font-size: 0.9rem;
}

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

.phone-mockup {
    background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1));
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.screenshot {
    width: 300px;
    height: auto;
    border-radius: 30px;
    display: block;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--brand-blue);
    color: white;
    box-shadow: 0 4px 16px rgba(0, 130, 252, 0.3);
}

.btn-primary:hover {
    background-color: var(--brand-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 130, 252, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-icon-large {
    width: 48px;
    height: 48px;
}

/* ========================================
   SECTIONS
   ======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.15rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 20px;
    border: 2px solid #f0f0f0;
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--brand-pink), var(--brand-blue));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

/* ========================================
   HOW IT WORKS SECTION
   ======================================== */
.how-it-works {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--surface-light) 100%);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    background: var(--bg-white);
    padding: var(--spacing-md);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.step-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   USE CASES SECTION
   ======================================== */
.use-cases {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

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

.use-case {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--surface-light);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.use-case:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.use-case-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.use-case-description {
    color: var(--text-secondary);
}

/* ========================================
   DOWNLOAD SECTION
   ======================================== */
.download {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-middle) 50%, var(--gradient-end) 100%);
}

.download-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-on-gradient);
    margin-bottom: var(--spacing-sm);
}

.download-subtitle {
    font-size: 1.25rem;
    color: var(--text-on-gradient);
    opacity: 0.95;
    margin-bottom: var(--spacing-md);
}

.btn-download {
    background-color: var(--text-primary);
    color: white;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-download:hover {
    background-color: #1a1a1a;
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.download-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.download-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    opacity: 0.8;
}

.download-store {
    font-size: 1.25rem;
    font-weight: 600;
}

.download-note {
    margin-top: var(--spacing-md);
    color: var(--text-on-gradient);
    opacity: 0.8;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

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

.footer-logo-image {
    height: 50px;
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    opacity: 0.7;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    opacity: 0.7;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-image {
        order: -1;
    }
    
    .nav-links {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .screenshot {
        width: 250px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.feature-card,
.step,
.use-case {
    animation: fadeInUp 0.6s ease-out;
}

/* Stagger animations */
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }