/**
 * Site Scanner v2.1 - Landing Page Styles
 * Modern, responsive design with dark theme
 */

/* ===== CSS Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== CSS Custom Properties ===== */
:root {
    /* Colors */
    --bg-primary: #0a0e27;
    --bg-secondary: #151b35;
    --bg-card: #1a2038;
    --accent: #00d4ff;
    --accent-hover: #00b8e6;
    --text-primary: #e4e6eb;
    --text-secondary: #9ca3af;
    --border: #2a3142;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 40px;
    --space-3xl: 60px;
    
    /* Typography */
    --font-base: 16px;
    --font-sm: 0.9em;
    --font-md: 0.95em;
    --font-lg: 1.1em;
    --font-xl: 1.25em;
    --font-2xl: 1.5em;
    --font-3xl: 2em;
    --font-4xl: 2.5em;
    --font-5xl: 3.5em;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

/* ===== Base Styles ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: radial-gradient(1200px 600px at 10% -10%, rgba(0, 212, 255, 0.12), transparent 60%),
                radial-gradient(900px 500px at 90% -10%, rgba(14, 165, 233, 0.10), transparent 55%),
                var(--bg-primary);
    min-height: 100vh;
    font-size: var(--font-base);
    position: relative;
    overflow-x: hidden;
}

/* Animated gradient overlay */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 40%);
    animation: gradientShift 20s ease-in-out infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes gradientShift {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 1;
    }
    33% {
        transform: translate(-5%, 5%) rotate(5deg);
        opacity: 0.9;
    }
    66% {
        transform: translate(5%, -5%) rotate(-5deg);
        opacity: 0.95;
    }
}

/* ===== Layout ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== Navigation ===== */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    backdrop-filter: blur(10px);
    background: rgba(10, 14, 39, 0.8);
    z-index: 1000;
}

.nav-brand {
    font-size: var(--font-lg);
    font-weight: 600;
    letter-spacing: 0.3px;
}

.nav-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-md);
    transition: color var(--transition-fast);
}

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

/* ===== Header / Hero ===== */
header {
    padding: 70px 0 var(--space-2xl);
    text-align: center;
    position: relative;
}

/* Hero glow effect */
header::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
    animation: heroGlow 8s ease-in-out infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes heroGlow {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.9;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

h1 {
    font-size: var(--font-5xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--accent) 0%, #0ea5e9 50%, #3b82f6 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientText 5s ease infinite;
    text-shadow: 0 0 80px rgba(0, 212, 255, 0.3);
}

@keyframes gradientText {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.tagline {
    font-size: var(--font-xl);
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    font-weight: 400;
}

.subtitle {
    font-size: 1em;
    color: var(--text-secondary);
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: 28px;
    flex-wrap: wrap;
}

.pill {
    display: inline-flex;
    gap: var(--space-xs);
    align-items: center;
    padding: 6px var(--space-sm);
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    margin-top: 14px;
}

/* ===== Buttons ===== */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: var(--bg-primary);
    padding: var(--space-md) var(--space-2xl);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--font-lg);
    font-weight: 600;
    transition: all var(--transition-base);
    border: 2px solid var(--accent);
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--text-primary);
    padding: 14px var(--space-xl);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 1em;
    font-weight: 600;
    transition: all var(--transition-base);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ===== Main Content ===== */
.main-content {
    padding: var(--space-2xl) 0 var(--space-3xl);
}

/* ===== Installation Box ===== */
.install-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    margin: 0 0 var(--space-3xl);
}

.install-box h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: var(--font-2xl);
    font-weight: 600;
}

.install-box p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* ===== Command Block ===== */
.command {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 20px;
    border-radius: var(--radius-md);
    font-family: 'Fira Code', 'Courier New', 'SF Mono', Monaco, monospace;
    font-size: var(--font-md);
    overflow-x: auto;
    margin: var(--space-sm) 0;
    position: relative;
    word-break: break-all;
    white-space: pre-wrap;
    transition: all 0.3s;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
}

.command:hover {
    border-color: var(--accent);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2), 0 0 15px rgba(0, 212, 255, 0.2);
}

.command code {
    background: none;
    padding: 0;
    color: inherit;
}

.copy-btn {
    position: absolute;
    right: var(--space-sm);
    top: var(--space-sm);
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85em;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

.copy-btn::before {
    content: '📋';
    font-size: 1.1em;
}

.copy-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.4);
}

.copy-btn:active {
    transform: translateY(0);
}

/* Copy success state */
.copy-btn.copied {
    background: var(--success);
}

.copy-btn.copied::before {
    content: '✓';
}

/* ===== Grids ===== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 20px 0 var(--space-2xl);
}

.usage-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.usage-card h4 {
    font-size: 1.05em;
    margin-bottom: var(--space-sm);
}

/* ===== Stats ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-3xl) 0;
}

.stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 28px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.6s;
}

.stat:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.stat:hover::before {
    left: 100%;
}

.stat-number {
    font-size: var(--font-4xl);
    font-weight: 700;
    display: block;
    background: linear-gradient(135deg, var(--accent) 0%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

@keyframes statPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}
    display: block;
    color: var(--accent);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--font-md);
    color: var(--text-secondary);
    font-weight: 400;
}

/* ===== Section Title ===== */
.section-title {
    margin: var(--space-3xl) 0 var(--space-xl);
    text-align: center;
    font-size: var(--font-3xl);
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Features ===== */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    margin: var(--space-2xl) 0;
}

.feature {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* Animated gradient border effect */
.feature::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent), #0ea5e9, #3b82f6, var(--accent));
    background-size: 300% 300%;
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s;
    animation: borderGradient 3s ease infinite;
}

@keyframes borderGradient {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.feature:hover::before {
    opacity: 1;
}

.feature:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.3);
    border-color: transparent;
}

/* Add icon placeholder effect */
.feature h3::before {
    content: attr(data-icon);
    display: block;
    font-size: 2.5em;
    margin-bottom: 12px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    filter: grayscale(1) brightness(0.7);
}

.feature[data-icon]::after {
    content: attr(data-icon);
    position: absolute;
    font-size: 2.5em;
    top: 20px;
    right: 20px;
    opacity: 0.15;
    pointer-events: none;
    transition: all 0.4s;
}

.feature:hover[data-icon]::after {
    transform: scale(1.3) rotate(10deg);
    opacity: 0.3;
}

.feature:hover h3::before {
    transform: scale(1.15) rotate(-5deg);
    filter: grayscale(0) brightness(1) drop-shadow(0 0 10px currentColor);
}

.feature h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 1.2em;
    font-weight: 600;
    transition: color 0.3s;
}

.feature:hover h3 {
    color: var(--accent);
}

.feature p {
    color: var(--text-secondary);
    font-size: var(--font-md);
    line-height: 1.6;
    transition: color 0.3s;
}

.feature:hover p {
    color: var(--text-primary);
}

/* ===== Requirements Box ===== */
.requirements {
    background: var(--bg-card);
    border: 1px solid var(--warning);
    border-left: 3px solid var(--warning);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    margin: var(--space-2xl) 0;
}

/* ===== Trust Section & Testimonials ===== */
.trust-section {
    margin: var(--space-3xl) 0;
    text-align: center;
    position: relative;
}

.trust-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-lg);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.testimonials-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto var(--space-xl);
    min-height: 280px;
}

.testimonial {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: none;
}

.testimonial.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: all;
}

.testimonial-icon {
    font-size: 3em;
    margin-bottom: var(--space-md);
    animation: float 3s ease-in-out infinite;
}

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

.testimonial-text {
    font-size: var(--font-lg);
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    font-style: italic;
    position: relative;
}

.testimonial-text::before {
    content: '"';
    font-size: 4em;
    position: absolute;
    top: -20px;
    left: -10px;
    color: var(--accent);
    opacity: 0.2;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    color: var(--accent);
    font-size: var(--font-md);
}

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

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.carousel-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--accent);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5em;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--accent);
    transform: scale(1.2);
}

.dot:hover {
    background: var(--accent-hover);
}

.trust-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.trust-metric {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: all var(--transition-base);
}

.trust-metric:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}

.trust-metric-value {
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--accent);
}

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

.requirements h3 {
    color: var(--warning);
    margin-bottom: var(--space-md);
    font-size: 1.2em;
}

.requirements ul {
    list-style: none;
    padding: 0;
}

.requirements li {
    color: var(--text-secondary);
    padding: var(--space-xs) 0;
    padding-left: var(--space-lg);
    position: relative;
}

.requirements li:before {
    content: "•";
    color: var(--warning);
    font-weight: bold;
    position: absolute;
    left: var(--space-xs);
}

/* ===== Download Section ===== */
.download-section {
    text-align: center;
    margin: var(--space-3xl) 0;
}

/* ===== Footer ===== */
footer {
    text-align: center;
    padding: var(--space-2xl) 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    margin-top: var(--space-3xl);
}

.footer-copyright {
    margin-top: 10px;
    opacity: 0.8;
}

.download-note {
    margin-top: 20px;
    color: var(--text-secondary);
}

.download-note {
    margin-top: 20px;
    color: var(--text-secondary);
}

.install-grid {
    margin-top: var(--space-md);
}

.install-note {
    margin-top: 10px;
    color: var(--text-secondary);
}

.section-title--usage {
    margin-top: var(--space-2xl);
}

.download-heading {
    margin-bottom: 30px;
    color: var(--text-primary);
}

/* ===== Code ===== */
code {
    background: var(--bg-secondary);
    color: var(--accent);
    padding: 3px var(--space-xs);
    border-radius: var(--radius-sm);
    font-family: 'Fira Code', 'Courier New', 'SF Mono', Monaco, monospace;
    font-size: var(--font-sm);
}

/* ===== Accessibility ===== */
*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    h1 {
        font-size: var(--font-4xl);
    }
    
    .section-title {
        font-size: var(--font-2xl);
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .nav {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }
    
    .nav-links {
        width: 100%;
        justify-content: flex-start;
    }
    
    .command {
        font-size: 0.85em;
        padding: var(--space-md);
    }
    
    .copy-btn {
        position: static;
        display: block;
        width: 100%;
        margin-top: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    h1 {
        font-size: 2em;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
}

/* ===== Print Styles ===== */
@media print {
    .nav,
    .copy-btn,
    .btn-primary,
    .btn-secondary {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .feature,
    .stat,
    .install-box {
        border-color: #ccc;
        page-break-inside: avoid;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}