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

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.github-link {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.github-link:hover {
    background: var(--primary);
    color: white !important;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 140px 0 100px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    z-index: -1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
}

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

.hero-description {
    font-size: 20px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

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

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

.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Phone Mockup */
.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease;
}

.phone-mockup {
    position: relative;
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
}

.phone-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 9/19;
    background: linear-gradient(145deg, #2d3748, #1a202c);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #1a202c;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 32px;
    overflow: hidden;
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--text-muted);
    font-weight: 500;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: float 3s ease-in-out infinite;
}

.card-1 { top: 10%; right: -20px; animation-delay: 0s; }
.card-2 { bottom: 30%; left: -30px; animation-delay: 1s; }
.card-3 { bottom: 10%; right: -10px; animation-delay: 2s; }

.card-icon {
    font-size: 20px;
}

.card-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-description {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.feature-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--shadow);
    border-color: var(--primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-description {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* Screenshots Section */
.screenshots {
    padding: 100px 0;
}

.screenshot-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

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

.screenshot-frame {
    background: linear-gradient(145deg, #2d3748, #1a202c);
    border-radius: 24px;
    padding: 20px;
    margin-bottom: 16px;
}

.screenshot-frame .screenshot-placeholder {
    aspect-ratio: 9/16;
    border-radius: 16px;
}

.screenshot-caption {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Download Section */
.download {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.download-card {
    background: white;
    border-radius: 24px;
    padding: 60px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
    box-shadow: 0 20px 60px var(--shadow-lg);
}

.download-title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.download-description {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.download-info {
    display: flex;
    gap: 40px;
    margin-bottom: 32px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

.info-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.download-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.download-note {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}

.qr-placeholder {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Documentation Section */
.documentation {
    padding: 100px 0;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.doc-card {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-decoration: none;
    transition: all 0.3s ease;
}

.doc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--shadow);
    border-color: var(--primary);
}

.doc-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.doc-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.doc-card p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-text {
    color: white;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 15px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

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

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-title {
        font-size: 42px;
    }

    .phone-mockup {
        max-width: 300px;
    }

    .download-card {
        grid-template-columns: 1fr;
        padding: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        gap: 16px;
        font-size: 14px;
    }

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

    .hero-title {
        font-size: 36px;
    }

    .hero-description {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .section-title {
        font-size: 36px;
    }

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

    .screenshot-carousel {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}