/* ============================================
   CSS Variables & Reset
   ============================================ */

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border: #e2e8f0;
    --success: #10b981;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;
    
    /* 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);
    
    /* 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: 100ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* Optimize scrolling performance */
    -webkit-overflow-scrolling: touch;
}

/* Optimize rendering performance */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* GPU acceleration for smooth scrolling */
body {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

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

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

/* Image optimization */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.2s ease-in;
    will-change: opacity;
}

img[loading="lazy"].loaded {
    opacity: 1;
    will-change: auto;
}

/* Optimize image rendering */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

ul {
    list-style: none;
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    transition: opacity var(--transition-base);
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: #374151;
    letter-spacing: -0.5px;
}

@media (min-width: 768px) {
    .logo-icon {
        width: 36px;
        height: 36px;
    }
    
    .logo-text {
        font-size: var(--font-size-2xl);
    }
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

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

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-menu {
    display: none;
    gap: var(--spacing-lg);
    align-items: center;
}

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

.nav-menu.active {
    display: flex;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    animation: slideDown var(--transition-base);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
}

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

.nav-menu a.active {
    color: var(--primary);
    font-weight: 600;
}

.nav-cta {
    background: var(--gradient-1);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: calc(70px + var(--spacing-2xl)) var(--spacing-md) var(--spacing-3xl);
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    gap: var(--spacing-2xl);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
    }
}

.hero-content {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero-content {
        text-align: left;
    }
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

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

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 1024px) {
    .hero-description {
        margin-left: 0;
        margin-right: 0;
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero-cta {
        justify-content: flex-start;
    }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

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

.hero-visual {
    position: relative;
    display: none;
}

@media (min-width: 1024px) {
    .hero-visual {
        display: block;
    }
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

@media (min-width: 1024px) {
    .hero-image-wrapper {
        height: 500px;
    }
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
    will-change: transform;
}

.hero-image-wrapper:hover .hero-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    pointer-events: none;
}

/* ============================================
   Section Styles
   ============================================ */

section {
    padding: var(--spacing-3xl) var(--spacing-md);
}

@media (min-width: 768px) {
    section {
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.section-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Problem Section
   ============================================ */

.problem-section {
    background: var(--bg-secondary);
}

.problem-image-section {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.problem-hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

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

@media (min-width: 640px) {
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.problem-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    will-change: transform;
}

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

.problem-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.problem-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.problem-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.problem-result {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary);
}

.result-text {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    line-height: 1.7;
}

/* ============================================
   Solution Section
   ============================================ */

.solution-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 768px) {
    .feature-item {
        grid-template-columns: 300px 1fr;
    }
    
    .feature-item.reverse {
        grid-template-columns: 1fr 300px;
    }
    
    .feature-item.reverse .feature-visual {
        order: 2;
    }
    
    .feature-item.reverse .feature-content {
        order: 1;
    }
}

.feature-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    will-change: transform;
}

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

.feature-image {
    width: 100%;
    height: 100%;
    min-height: 300px;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base);
    will-change: transform;
}

.feature-visual:hover .feature-image {
    transform: scale(1.05);
}

.feature-icon {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-5xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--border);
}

.feature-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.feature-content p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Who Section
   ============================================ */

.who-section {
    background: var(--bg-secondary);
}

.who-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .who-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.who-card {
    background: white;
    padding: 0;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    will-change: transform;
}

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

.who-card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    position: relative;
}

.who-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
    will-change: transform;
}

.who-card:hover .who-image {
    transform: scale(1.1);
}

.who-card-content {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.who-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.who-card-content > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

.who-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.who-icon {
    font-size: var(--font-size-3xl);
}

.who-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.who-card > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

.who-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.who-list li {
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
    font-size: var(--font-size-sm);
}

.who-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.who-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}

.who-cta p {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    font-weight: 500;
}

/* ============================================
   Mission Section
   ============================================ */

.mission-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .mission-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.mission-card,
.vision-card {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}

.mission-badge,
.vision-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-1);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.mission-card h2,
.vision-card h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.mission-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.vision-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.vision-list li {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.vision-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success);
    color: white;
    border-radius: var(--radius-full);
    font-weight: bold;
    font-size: var(--font-size-sm);
}

.vision-list li div {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-base);
}

.vision-list li strong {
    color: var(--text-primary);
}

.vision-conclusion {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-lg);
    font-style: italic;
}

/* ============================================
   Download Section
   ============================================ */

.download-section {
    background: var(--bg-secondary);
}

.download-content {
    max-width: 1000px;
    margin: 0 auto;
}

.download-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.download-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-1);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.download-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

.download-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.download-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

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

.download-platform {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all var(--transition-base);
}

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

.platform-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.platform-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    color: var(--primary);
}

.platform-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.qr-code-container {
    margin-bottom: var(--spacing-xl);
}

.qr-code-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-md);
    background: white;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.qr-code-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(0deg, transparent, transparent 8px, var(--bg-tertiary) 8px, var(--bg-tertiary) 9px),
        repeating-linear-gradient(90deg, transparent, transparent 8px, var(--bg-tertiary) 8px, var(--bg-tertiary) 9px);
    opacity: 0.3;
}

.qr-code-empty {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    background: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.qr-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-base);
    width: 100%;
    max-width: 280px;
    justify-content: center;
}

.download-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.download-btn svg {
    flex-shrink: 0;
    color: var(--primary);
}

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

.download-btn-label {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    line-height: 1.2;
}

.download-btn-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

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

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

.ios-btn:hover svg,
.ios-btn:hover .download-btn-name {
    color: white;
}

.android-btn {
    border-color: var(--success);
}

.android-btn:hover {
    background: var(--success);
    color: white;
}

.android-btn svg {
    color: var(--success);
}

.android-btn:hover svg,
.android-btn:hover .download-btn-name {
    color: white;
}

.download-note {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    max-width: 700px;
    margin: 0 auto;
}

.download-note p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
    background: var(--gradient-1);
    color: white;
    text-align: center;
}

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

.cta-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: white;
}

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

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.7;
}

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

.cta-section .btn-primary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-md);
}

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

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 3fr;
    }
}

.footer-brand .logo {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.footer-brand .tagline {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.5px;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

@media (min-width: 640px) {
    .footer-links {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-column h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: white;
}

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

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

/* ============================================
   Animations & Interactions
   ============================================ */

/* Performance optimizations - animations handled by JS for better control */
.problem-card,
.who-card,
.download-platform,
.feature-item,
.mission-card,
.vision-card {
    will-change: opacity, transform;
    content-visibility: auto;
}

/* Remove CSS animations - handled by Intersection Observer for better performance */

/* Smooth scroll offset for fixed navbar */
html {
    scroll-padding-top: 70px;
}

/* ============================================
   Manifesto Page Styles
   ============================================ */

.manifesto-hero {
    background: var(--bg-secondary);
}

.manifesto-content {
    padding: var(--spacing-3xl) var(--spacing-md);
}

.manifesto-article {
    max-width: 800px;
    margin: 0 auto;
}

.manifesto-section {
    margin-bottom: var(--spacing-3xl);
}

.manifesto-section h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    line-height: 1.2;
}

.manifesto-section p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.manifesto-section p strong {
    color: var(--text-primary);
    font-weight: 600;
}

.manifesto-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.manifesto-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    position: relative;
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
}

.manifesto-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.manifesto-cta {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-3xl);
}

/* ============================================
   Blog Page Styles
   ============================================ */

.blog-hero {
    text-align: center;
}

.blog-posts {
    background: var(--bg-primary);
}

.blog-content {
    max-width: 900px;
    margin: 0 auto;
}

.blog-categories {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
    justify-content: center;
}

.blog-category {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
}

.blog-category:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

.blog-category.active {
    background: var(--gradient-1);
    color: white;
    border-color: transparent;
}

.blog-posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.blog-month-section {
    margin-bottom: var(--spacing-3xl);
}

.blog-month-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

.blog-post-item {
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.blog-post-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.blog-post-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.blog-post-category {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.blog-post-date {
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.blog-post-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.blog-post-title a {
    color: var(--text-primary);
    transition: color var(--transition-base);
}

.blog-post-title a:hover {
    color: var(--primary);
}

.blog-post-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-light);
    flex-wrap: wrap;
}

.blog-post-author {
    font-weight: 500;
}

.blog-post-read-time::before {
    content: '•';
    margin-right: var(--spacing-sm);
}

.blog-post-excerpt {
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.blog-post-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: gap var(--transition-base);
}

.blog-post-link:hover {
    gap: var(--spacing-sm);
}

.blog-post-full {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border);
}

.blog-post-content {
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--text-secondary);
}

.blog-post-content p {
    margin-bottom: var(--spacing-md);
}

.blog-post-content h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.blog-post-content ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.blog-post-content ul li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    position: relative;
    line-height: 1.8;
}

.blog-post-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.blog-post-toggle {
    cursor: pointer;
}

.blog-cta {
    text-align: center;
}

@media (max-width: 768px) {
    .manifesto-section h2 {
        font-size: var(--font-size-2xl);
    }
    
    .blog-post-title {
        font-size: var(--font-size-xl);
    }
    
    .blog-categories {
        justify-content: flex-start;
    }
}