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

:root {
    /* Colors */
    --primary-color: #113760;
    --primary-light: #1e4a73;
    --primary-dark: #0a2a4a;
    --secondary-color: #00B176;
    --accent-color: #FF6B35;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;

    /* Text Colors */
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --text-inverse: #ffffff;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-dark: #1a1a1a;

    /* Gradients */
    --primary-gradient: linear-gradient(135deg, #113760, #1e4a73);
    --secondary-gradient: linear-gradient(135deg, #00B176, #28a745);
    --hero-gradient: linear-gradient(135deg, #113760 0%, #1e4a73 50%, #00B176 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* 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;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

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);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--bg-tertiary);
    z-index: 1000;
    transition: var(--transition-base);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-primary);
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.brand-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

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

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

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

.cta-button {
    background: var(--primary-gradient);
    color: var(--text-inverse) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
}

.cta-button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--hero-gradient);
    color: var(--text-inverse);
    overflow: hidden;
}

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

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

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

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

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

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

.btn-secondary {
    background: transparent;
    color: var(--text-inverse);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

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

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-inverse);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.app-screenshot {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* Section Styles */
section {
    padding: var(--spacing-xxxl) 0;
}

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

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    background: var(--bg-secondary);
}

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

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

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

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

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--text-inverse);
}

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

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

/* Screenshots Section */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.screenshot {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.screenshot:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* Pricing Section */
.pricing {
    background: var(--bg-secondary);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    text-align: center;
}

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

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-gradient);
    color: var(--text-inverse);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.pricing-header {
    margin-bottom: var(--spacing-xl);
}

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

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
}

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

.period {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* Download Section */
.download {
    background: var(--primary-gradient);
    color: var(--text-inverse);
}

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

.download-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.download-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.download-buttons {
    margin-bottom: var(--spacing-lg);
}

.app-store-button img {
    height: 60px;
    transition: var(--transition-base);
}

.app-store-button:hover img {
    transform: scale(1.05);
}

.download-note {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.app-mockup {
    width: 100%;
    max-width: 400px;
    height: auto;
}

/* Support Section */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.support-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-base);
}

.support-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.support-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.support-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.support-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

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

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--spacing-xxxl) 0 var(--spacing-xl);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.footer-brand-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-inverse);
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

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

.social-link {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--text-inverse);
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-inverse);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

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

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-sm);
}

.footer-note {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content,
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        justify-content: center;
    }

    .features-grid,
    .pricing-cards,
    .support-grid {
        grid-template-columns: 1fr;
    }

    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .download-title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .screenshots-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

.feature-card,
.pricing-card,
.support-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Focus States */
.btn:focus,
.nav-link:focus,
.support-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .navbar,
    .footer {
        display: none;
    }

    .hero {
        background: none;
        color: var(--text-primary);
    }
}