/* CSS Variables for Dark Theme */
:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --card-bg: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --accent-color: #6366f1;
    --accent-hover: #5855eb;
    --border-color: #333333;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.4);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.5);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 0;
}

.nav-tagline {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 400;
    display: block;
    margin-top: -2px;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

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

.nav-link.cta-button {
    background: var(--gradient-primary);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    transition: all 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    background: var(--gradient-secondary);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

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

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

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

.app-screenshot {
    max-width: 300px;
    height: auto;
    border-radius: 30px;
    box-shadow: var(--shadow-heavy);
    transition: transform 0.3s ease;
}

.app-screenshot:hover {
    transform: scale(1.05);
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Why Section */
.why-section {
    background: var(--secondary-bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.why-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.why-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

.why-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.why-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* How Section */
.how-section {
    background: var(--primary-bg);
}

.how-content {
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

.how-step {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.how-step.reverse {
    direction: rtl;
}

.how-step.reverse > * {
    direction: ltr;
}

.step-image {
    display: flex;
    justify-content: center;
}

.feature-screenshot {
    max-width: 250px;
    height: auto;
    border-radius: 25px;
    box-shadow: var(--shadow-medium);
}

.step-content {
    padding: 2rem;
}

.step-number {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-color);
    background: rgba(99, 102, 241, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 1rem;
}

.step-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
    border-color: var(--accent-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Perfect For Section */
.perfect-for-section {
    background: var(--primary-bg);
}

.perfect-for-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.perfect-for-card {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.perfect-for-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
}

.perfect-for-card i {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.perfect-for-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.perfect-for-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Gallery Section */
.gallery-section {
    background: var(--secondary-bg);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.gallery-image {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    transition: transform 0.3s ease;
    justify-self: center;
}

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

/* Download Section */
.download-section {
    background: var(--gradient-secondary);
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.download-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: var(--text-primary);
    color: var(--primary-bg);
    padding: 15px 30px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-download i {
    font-size: 2rem;
}

.download-text {
    font-size: 0.9rem;
    display: block;
}

.download-store {
    font-size: 1.2rem;
    font-weight: 700;
    display: block;
}

.download-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: var(--primary-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-medium);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

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

    .how-step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .how-step.reverse {
        direction: ltr;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .perfect-for-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .btn-primary, .btn-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .app-screenshot, .feature-screenshot {
        max-width: 200px;
    }

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

    .gallery-image {
        max-width: 200px;
    }
}

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

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

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