/* ==================== */
/* Reset & Base Styles */
/* ==================== */

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

:root {
    /* Colors */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0a0e27;
    --light-bg: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-light: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 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;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--light-bg);
    overflow-x: hidden;
}

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

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

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

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.brand-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-base);
}

.nav-menu a:hover {
    color: #667eea;
}

/* Language Dropdown in Navigation */
.language-dropdown {
    position: relative;
}

.lang-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.lang-dropdown-btn:hover {
    border-color: #667eea;
    color: #667eea;
    background: rgba(102, 126, 234, 0.05);
}

.lang-dropdown-btn svg {
    transition: transform var(--transition-base);
}

.language-dropdown.active .lang-dropdown-btn svg {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    min-width: 160px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 1000;
}

.language-dropdown.active .lang-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown-menu li {
    margin: 0;
}

.lang-option {
    width: 100%;
    padding: 10px 20px;
    background: none;
    border: none;
    text-align: left;
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.lang-option.active {
    background: var(--primary-gradient);
    color: white;
}

/* Navigation Button Style */
.btn-nav {
    padding: 8px 20px;
    font-size: var(--font-size-base);
}

.nav-download {
    color: var(--text-primary);
    font-weight: 600;
    transition: all var(--transition-base);
}

.nav-download:hover {
    color: #667eea;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

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

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

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

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

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

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

.btn-secondary {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.2);
}

.apple-icon {
    width: 24px;
    height: 24px;
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

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

.gradient-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-gradient);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary-gradient);
    top: 50%;
    right: -100px;
    animation-delay: 5s;
}

.blob-3 {
    width: 600px;
    height: 600px;
    background: var(--accent-gradient);
    bottom: -200px;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-title span {
    display: block;
}

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

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-image {
    position: relative;
    z-index: 1;
}

.phone-mockup {
    position: relative;
    animation: float-phone 6s infinite ease-in-out;
}

@keyframes float-phone {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.screenshot {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

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

section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
}

/* ==================== */
/* Features Section */
/* ==================== */

.features {
    background: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
    padding: var(--spacing-2xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--light-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--text-light);
}

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

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== */
/* How It Works Section */
/* ==================== */

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

.step {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.step-reverse {
    grid-template-columns: auto 1fr 1fr;
}

.step-reverse .step-content {
    order: 2;
}

.step-reverse .step-image {
    order: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--primary-gradient);
    color: var(--text-light);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
}

.step-content {
    padding: var(--spacing-lg);
}

.step-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

.step-image {
    position: relative;
    padding: var(--spacing-lg);
}

.step-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

/* ==================== */
/* Testimonials Section */
/* ==================== */

.testimonials {
    background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
}

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

.testimonial-card {
    background: var(--light-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-rating {
    color: #fbbf24;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

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

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

.author-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.author-location {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

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

.cta-section {
    background: var(--dark-bg);
    color: var(--text-light);
    text-align: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0.1;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

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

.footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-description {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-heading {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    opacity: 0.8;
    transition: all var(--transition-base);
}

.footer-links a:hover {
    opacity: 1;
    color: #667eea;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* ==================== */
/* Responsive Design */
/* ==================== */

@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .step-reverse {
        grid-template-columns: 1fr;
    }
    
    .step-reverse .step-content {
        order: 0;
    }
    
    .step-reverse .step-image {
        order: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    /* Show mobile menu when toggled */
    .nav-menu.active {
        display: flex;
        position: absolute;
        top: 64px; /* below the navbar */
        right: var(--spacing-md);
        left: var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
        background: #ffffff;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md);
        z-index: 1000;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    /* Animate hamburger to X when active */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-sm);
    }

    .features {
        padding: var(--spacing-xl) 0;
    }
    
    .language-selector {
        top: 70px;
        right: 10px;
        left: 10px;
        flex-wrap: wrap;
        justify-content: center;
        max-width: calc(100% - 20px);
        width: auto;
    }
    
    .lang-btn {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

/* ==================== */
/* Animations */
/* ==================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Smooth scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}