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

:root {
    --primary-color: #7c3aed;
    --primary-dark: #5b21b6;
    --secondary-color: #06b6d4;
    --accent-color: #ec4899;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100vw;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}

/* Navbar */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo .icon {
    font-size: 2rem;
}

.brand {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.3s;
}

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

/* Hero Section */
.hero {
    padding: 120px 20px 80px;
    background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

.hero::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    pointer-events: none;
}

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

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(124, 58, 237, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    background: rgba(124, 58, 237, 0.1);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Vault Mockup */
.vault-mockup {
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.mockup-header {
    background: var(--bg-darker);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.mockup-title {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.mockup-content {
    padding: 80px 40px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-darker) 100%);
}

.lock-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

.lock-text {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* Features Section */
.features {
    padding: 100px 20px;
    background: var(--bg-dark);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    font-weight: bold;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* How It Works Section */
.how-it-works {
    padding: 100px 20px;
    background: var(--bg-darker);
}

.steps {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    justify-content: center;
}

.step {
    display: flex;
    gap: 1.5rem;
    max-width: 350px;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.step-content h3 {
    margin-bottom: 0.5rem;
}

.step-content p {
    color: var(--text-secondary);
}

/* Download Section */
.download {
    padding: 100px 20px;
    background: var(--bg-dark);
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.download-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s;
}

.download-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.download-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.download-card h3 {
    margin-bottom: 1rem;
}

.download-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.btn-download {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    margin-bottom: 1rem;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.3);
}

.download-card small {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.code-block {
    background: var(--bg-darker);
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin: 1rem 0;
}

.code-block code {
    color: var(--secondary-color);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.requirements {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-top: 3rem;
}

.requirements h4 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.requirements ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.requirements li {
    color: var(--text-secondary);
}

/* FAQ Section */
.faq {
    padding: 100px 20px;
    background: var(--bg-darker);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* CTA Section */
.cta {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn-large {
    font-size: 1.2rem;
    padding: 16px 40px;
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--bg-darker);
    padding: 60px 20px 20px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p,
.footer-section li {
    color: var(--text-secondary);
    line-height: 2;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a:hover {
    color: var(--primary-color);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero {
        padding: 100px 15px 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 2rem;
        flex-wrap: wrap;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    
    .nav-links {
        gap: 1rem;
        font-size: 0.95rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .download-options {
        grid-template-columns: 1fr;
    }
    
    .mockup-content {
        padding: 60px 20px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        transition: left 0.3s ease;
        z-index: 999;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .github-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .navbar .container {
        padding: 0.8rem 15px;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo .icon {
        font-size: 1.5rem;
    }
    
    .hero {
        padding: 80px 15px 50px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.4;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        line-height: 1.6;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .mockup-content {
        padding: 40px 15px;
    }
    
    .lock-icon {
        font-size: 3.5rem;
    }
    
    .lock-text {
        font-size: 1rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .features,
    .how-it-works,
    .download,
    .faq {
        padding: 60px 15px;
    }
    
    .cta {
        padding: 60px 15px;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 0.8rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
        margin-bottom: 2.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .feature-icon {
        font-size: 2.5rem;
    }
    
    .feature-card h3 {
        font-size: 1.1rem;
    }
    
    .feature-card p {
        font-size: 0.95rem;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .download-card {
        padding: 2rem 1.5rem;
    }
    
    .download-icon {
        font-size: 3rem;
    }
    
    .code-block {
        padding: 0.8rem;
        overflow-x: auto;
    }
    
    .code-block code {
        font-size: 0.7rem;
        word-break: break-all;
        display: block;
    }
    
    .requirements {
        padding: 1.5rem;
    }
    
    .requirements ul {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    
    .requirements li {
        font-size: 0.9rem;
    }
    
    .faq-question {
        padding: 1rem;
    }
    
    .faq-question h3 {
        font-size: 1rem;
        padding-right: 10px;
    }
    
    .faq-answer p {
        padding: 0 1rem 1rem;
        font-size: 0.9rem;
    }
    
    .cta h2 {
        font-size: 1.8rem;
    }
    
    .cta p {
        font-size: 1rem;
    }
    
    .btn-large {
        font-size: 1rem;
        padding: 14px 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer {
        padding: 40px 15px 20px;
    }
}

@media (max-width: 375px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.95rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .code-block code {
        font-size: 0.65rem;
    }
}

/* Performance optimizations */
* {
    -webkit-tap-highlight-color: transparent;
}

a, button {
    touch-action: manipulation;
}

/* Smooth scrolling for all devices */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Improve touch targets */
@media (hover: none) and (pointer: coarse) {
    .btn, .nav-links a, .faq-question, .github-link {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Prevent text selection on buttons */
.btn, .menu-toggle, .faq-toggle {
    user-select: none;
    -webkit-user-select: none;
}

/* Loading optimization */
img, video {
    will-change: transform;
    backface-visibility: hidden;
}

/* GPU acceleration for animations */
.feature-card, .download-card, .btn, .nav-links {
    will-change: transform;
    transform: translateZ(0);
}