/**
 * SC-USCS - Ultimate Secure Clean Script
 * Main Stylesheet - Professional dark theme with cyan accents
 */

/* ========================================
   CSS Variables & Reset
   ======================================== */

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2234;
    --bg-card: #151d2e;
    --bg-card-hover: #1c2640;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #06b6d4;
    --accent-secondary: #0ea5e9;
    --accent-glow: rgba(6, 182, 212, 0.4);
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 100%);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --border-color: #2d3a52;
    --border-light: #374463;
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --container-max: 1400px;
    --section-padding: 6rem;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-sm: 8px;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background Effects */
.bg-grid {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-image: linear-gradient(rgba(6,182,212,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(6,182,212,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none; z-index: -2;
}

.bg-glow {
    position: fixed; border-radius: 50%; filter: blur(120px); opacity: 0.4;
    pointer-events: none; z-index: -1;
}
.bg-glow-1 {
    top: -20%; right: -10%; width: 600px; height: 600px;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}
.bg-glow-2 {
    bottom: -20%; left: -10%; width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(20px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(30px, 10px) scale(1.02); }
}

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

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 2rem; }

/* Header */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 14, 23, 0.8); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; gap: 2rem;
}
.logo { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; color: inherit; }
.logo-icon { width: 40px; height: 40px; color: var(--accent-primary); }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name { font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em; }
.logo-version { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }
.nav { display: flex; align-items: center; gap: 0.5rem; }
.nav-link {
    padding: 0.5rem 1rem; color: var(--text-secondary); text-decoration: none;
    font-size: 0.9rem; font-weight: 500; border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}
.nav-link:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.header-actions { display: flex; align-items: center; gap: 1rem; }
.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px; padding: 8px;
    background: none; border: none; cursor: pointer;
}
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.625rem 1.25rem; font-family: inherit; font-size: 0.9rem; font-weight: 600;
    text-decoration: none; border: none; border-radius: var(--border-radius-sm);
    cursor: pointer; transition: all var(--transition-fast); white-space: nowrap;
}
.btn-primary {
    background: var(--accent-gradient); color: var(--bg-primary);
    box-shadow: var(--shadow-sm), 0 0 20px var(--accent-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-md), 0 0 30px var(--accent-glow); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--border-light); }
.btn-ghost { background: transparent; color: var(--text-secondary); padding: 0.5rem 0.75rem; }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 1rem; }
.btn-generate {
    padding: 1rem 2rem; font-size: 1.1rem; background: var(--accent-gradient);
    color: var(--bg-primary); border-radius: var(--border-radius);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}
.btn-generate:hover:not(:disabled) { transform: translateY(-3px) scale(1.02); box-shadow: var(--shadow-lg), 0 0 50px var(--accent-glow); }
.btn-generate:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Hero Section */
.hero { padding: calc(72px + 4rem) 0 4rem; min-height: 100vh; display: flex; align-items: center; }
.hero .container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero-content { max-width: 600px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem;
    background: rgba(6, 182, 212, 0.1); border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 100px; color: var(--accent-primary); font-size: 0.85rem;
    font-weight: 500; margin-bottom: 1.5rem; animation: fadeInUp 0.6s ease;
}
.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 700; line-height: 1.1;
    margin-bottom: 1.5rem; letter-spacing: -0.03em; animation: fadeInUp 0.6s ease 0.1s both;
}
.hero-title-line { display: block; }
.hero-title-gradient {
    background: var(--accent-gradient); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-description {
    font-size: 1.15rem; color: var(--text-secondary); line-height: 1.7;
    margin-bottom: 2rem; animation: fadeInUp 0.6s ease 0.2s both;
}
.hero-description strong { color: var(--text-primary); }
.hero-stats { display: flex; gap: 2.5rem; margin-bottom: 2.5rem; animation: fadeInUp 0.6s ease 0.3s both; }
.stat { display: flex; flex-direction: column; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--accent-primary); font-family: var(--font-mono); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }
.hero-cta { display: flex; gap: 1rem; animation: fadeInUp 0.6s ease 0.4s both; }
.hero-visual { animation: fadeInUp 0.8s ease 0.3s both; }

/* Terminal Component */
.terminal {
    background: var(--bg-secondary); border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color); overflow: hidden; box-shadow: var(--shadow-lg);
}
.terminal-header {
    display: flex; align-items: center; gap: 1rem; padding: 0.875rem 1.25rem;
    background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color);
}
.terminal-dots { display: flex; gap: 8px; }
.terminal-dots span { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dots span:nth-child(1) { background: #ef4444; }
.terminal-dots span:nth-child(2) { background: #f59e0b; }
.terminal-dots span:nth-child(3) { background: #10b981; }
.terminal-title { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); }
.terminal-body { padding: 1.5rem; font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.8; overflow-x: auto; }
.terminal-body pre { margin: 0; }
.cmd-comment { color: #6b7280; }
.cmd-keyword { color: #06b6d4; }
.cmd-string { color: #10b981; }

/* Section Headers */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-title { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.02em; }
.section-description { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

/* Tools Section */
.tools-section { padding: var(--section-padding) 0; }

.quick-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.5rem; justify-content: center; }
.quick-btn {
    display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.625rem 1rem;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm); color: var(--text-secondary);
    font-family: inherit; font-size: 0.85rem; font-weight: 500;
    cursor: pointer; transition: all var(--transition-fast);
}
.quick-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-light); }
.quick-btn:active { transform: scale(0.98); }

.category-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; justify-content: center; }
.filter-btn {
    display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.625rem 1.25rem;
    background: transparent; border: 1px solid var(--border-color); border-radius: 100px;
    color: var(--text-secondary); font-family: inherit; font-size: 0.85rem;
    font-weight: 500; cursor: pointer; transition: all var(--transition-fast);
}
.filter-btn:hover { background: var(--bg-card); color: var(--text-primary); }
.filter-btn.active { background: var(--accent-primary); border-color: var(--accent-primary); color: var(--bg-primary); }

.tools-grid { display: flex; flex-direction: column; gap: 2rem; }
.tool-category {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg); overflow: hidden;
}
.tool-category.hidden { display: none; }

.category-header {
    display: flex; align-items: center; gap: 1rem; padding: 1.25rem 1.5rem;
    background: var(--bg-tertiary); cursor: pointer; transition: background var(--transition-fast);
}
.category-header:hover { background: var(--bg-card-hover); }
.category-icon {
    font-size: 1.5rem; width: 48px; height: 48px; display: flex;
    align-items: center; justify-content: center; background: var(--bg-card);
    border-radius: var(--border-radius-sm);
}
.category-info { flex: 1; }
.category-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.25rem; }
.category-desc { font-size: 0.85rem; color: var(--text-muted); }
.category-toggle {
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    background: none; border: none; color: var(--text-muted); cursor: pointer;
    transition: transform var(--transition-fast);
}
.category-toggle.collapsed { transform: rotate(-90deg); }

.category-tools {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1rem; padding: 1.5rem;
}
.category-tools.collapsed { display: none; }

/* Tool Card */
.tool-card {
    display: flex; gap: 1rem; padding: 1.25rem; background: var(--bg-secondary);
    border: 1px solid var(--border-color); border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}
.tool-card:hover { background: var(--bg-tertiary); border-color: var(--border-light); }
.tool-card.selected { border-color: var(--accent-primary); box-shadow: 0 0 0 1px var(--accent-primary), 0 0 20px rgba(6, 182, 212, 0.15); }
.tool-card.recommended { background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, transparent 100%); }

.tool-checkbox { position: relative; flex-shrink: 0; }
.tool-checkbox input { position: absolute; opacity: 0; width: 0; height: 0; }
.checkbox-custom {
    display: flex; align-items: center; justify-content: center; width: 24px; height: 24px;
    background: var(--bg-tertiary); border: 2px solid var(--border-color);
    border-radius: 6px; cursor: pointer; transition: all var(--transition-fast);
}
.checkbox-custom svg { width: 14px; height: 14px; opacity: 0; transform: scale(0.5); transition: all var(--transition-fast); stroke: var(--bg-primary); }
.tool-checkbox input:checked + .checkbox-custom { background: var(--accent-primary); border-color: var(--accent-primary); }
.tool-checkbox input:checked + .checkbox-custom svg { opacity: 1; transform: scale(1); }
.tool-checkbox input:focus + .checkbox-custom { box-shadow: 0 0 0 3px var(--accent-glow); }

.tool-content { flex: 1; min-width: 0; }
.tool-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; flex-wrap: wrap; }
.tool-name { font-size: 0.95rem; font-weight: 600; }
.tool-badges { display: flex; gap: 0.375rem; }
.badge {
    padding: 0.125rem 0.5rem; font-size: 0.7rem; font-weight: 600;
    border-radius: 4px; text-transform: uppercase; letter-spacing: 0.03em;
}
.badge-recommended { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.badge-safe { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.badge-moderate { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.badge-advanced { background: rgba(239, 68, 68, 0.2); color: #ef4444; }
.badge-type { background: var(--bg-card); color: var(--text-muted); }

.tool-description { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 0.5rem; }
.tool-details-btn {
    display: inline-flex; align-items: center; gap: 0.375rem; padding: 0;
    background: none; border: none; color: var(--accent-primary);
    font-family: inherit; font-size: 0.8rem; font-weight: 500;
    cursor: pointer; transition: opacity var(--transition-fast);
}
.tool-details-btn:hover { opacity: 0.8; }

/* Script Options */
.script-options {
    margin-top: 3rem; padding: 2rem; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--border-radius-lg);
}
.options-title {
    display: flex; align-items: center; gap: 0.75rem; font-size: 1.1rem;
    font-weight: 600; margin-bottom: 1.5rem; color: var(--text-primary);
}
.options-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.option-card { display: block; cursor: pointer; }
.option-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.option-content {
    display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem;
    background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--border-radius); transition: all var(--transition-fast);
}
.option-card:hover .option-content { background: var(--bg-tertiary); border-color: var(--border-light); }
.option-card input:checked + .option-content { border-color: var(--accent-primary); box-shadow: 0 0 0 1px var(--accent-primary); }
.option-icon {
    flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center;
    justify-content: center; background: var(--bg-card); border-radius: var(--border-radius-sm);
    color: var(--text-muted); transition: color var(--transition-fast);
}
.option-card input:checked + .option-content .option-icon { color: var(--accent-primary); }
.option-text { display: flex; flex-direction: column; }
.option-name { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.125rem; }
.option-desc { font-size: 0.8rem; color: var(--text-muted); }

/* Generate Section */
.generate-section {
    display: flex; align-items: center; justify-content: space-between; gap: 2rem;
    margin-top: 2rem; padding: 1.5rem 2rem; background: var(--bg-tertiary);
    border: 1px solid var(--border-color); border-radius: var(--border-radius-lg);
}
.selection-summary { display: flex; align-items: center; gap: 2rem; }
.summary-count { display: flex; align-items: baseline; gap: 0.5rem; }
.count-number { font-size: 2rem; font-weight: 700; font-family: var(--font-mono); color: var(--accent-primary); }
.count-label { font-size: 0.9rem; color: var(--text-muted); }
.summary-risk { display: flex; align-items: center; gap: 0.5rem; }
.risk-dot { width: 10px; height: 10px; border-radius: 50%; }
.risk-dot.safe { background: var(--success); }
.risk-dot.moderate { background: var(--warning); }
.risk-dot.advanced { background: var(--danger); }
.risk-text { font-size: 0.85rem; color: var(--text-secondary); }

/* How It Works Section */
.how-section { padding: var(--section-padding) 0; background: var(--bg-secondary); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-bottom: 3rem; }
.step-card {
    position: relative; padding: 2rem; background: var(--bg-card);
    border: 1px solid var(--border-color); border-radius: var(--border-radius-lg); text-align: center;
}
.step-number {
    position: absolute; top: -1rem; left: 2rem; font-size: 3rem;
    font-weight: 700; font-family: var(--font-mono); color: var(--accent-primary); opacity: 0.3;
}
.step-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 80px; height: 80px; background: rgba(6, 182, 212, 0.1);
    border-radius: 50%; color: var(--accent-primary); margin-bottom: 1.5rem;
}
.step-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.75rem; }
.step-description { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }

.safety-notice {
    display: flex; gap: 1.5rem; padding: 2rem;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, transparent 100%);
    border: 1px solid rgba(16, 185, 129, 0.3); border-radius: var(--border-radius-lg);
}
.notice-icon {
    flex-shrink: 0; width: 64px; height: 64px; display: flex;
    align-items: center; justify-content: center;
    background: rgba(16, 185, 129, 0.2); border-radius: 50%; color: var(--success);
}
.notice-content h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--success); }
.notice-content ul { list-style: none; }
.notice-content li {
    position: relative; padding-left: 1.5rem; margin-bottom: 0.5rem;
    font-size: 0.9rem; color: var(--text-secondary);
}
.notice-content li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: 600; }

/* FAQ Section */
.faq-section { padding: var(--section-padding) 0; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; max-width: 1000px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--border-radius); overflow: hidden; }
.faq-question {
    display: flex; align-items: center; justify-content: space-between; width: 100%;
    padding: 1.25rem 1.5rem; background: none; border: none; color: var(--text-primary);
    font-family: inherit; font-size: 1rem; font-weight: 600; text-align: left;
    cursor: pointer; transition: background var(--transition-fast);
}
.faq-question:hover { background: var(--bg-tertiary); }
.faq-question svg { flex-shrink: 0; color: var(--text-muted); transition: transform var(--transition-base); }
.faq-item.open .faq-question svg { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition-base); }
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 1.5rem 1.5rem; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }

/* About Section */
.about-section { padding: var(--section-padding) 0; background: var(--bg-secondary); }
.about-content { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; align-items: start; }
.about-text p { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; margin-bottom: 1.5rem; }
.about-text a { color: var(--accent-primary); text-decoration: none; }
.about-text a:hover { text-decoration: underline; }
.about-text em { color: var(--text-primary); font-style: normal; }
.about-links h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; }
.link-cards { display: flex; flex-direction: column; gap: 1rem; }
.link-card {
    display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--border-radius); text-decoration: none; color: inherit;
    transition: all var(--transition-fast);
}
.link-card:hover { background: var(--bg-card-hover); border-color: var(--border-light); transform: translateX(4px); }
.link-flag { font-size: 1.5rem; }
.link-info { flex: 1; display: flex; flex-direction: column; }
.link-title { font-weight: 600; font-size: 0.95rem; }
.link-url { font-size: 0.8rem; color: var(--text-muted); font-family: var(--font-mono); }
.link-card svg { color: var(--text-muted); }

/* Footer */
.footer { padding: 3rem 0 2rem; background: var(--bg-primary); border-top: 1px solid var(--border-color); }
.footer-content {
    display: flex; justify-content: space-between; gap: 4rem;
    padding-bottom: 2rem; border-bottom: 1px solid var(--border-color);
}
.footer-brand .logo { margin-bottom: 0.5rem; }
.footer-tagline { font-size: 0.9rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 4rem; }
.footer-col h4 {
    font-size: 0.85rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 1rem;
}
.footer-col a {
    display: block; padding: 0.375rem 0; color: var(--text-secondary);
    text-decoration: none; font-size: 0.9rem; transition: color var(--transition-fast);
}
.footer-col a:hover { color: var(--accent-primary); }
.footer-bottom { padding-top: 1.5rem; text-align: center; }
.footer-bottom p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.footer-disclaimer { font-size: 0.8rem; max-width: 600px; margin: 0 auto; }

/* Modal */
.modal {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 200;
    display: none; align-items: center; justify-content: center; padding: 2rem;
}
.modal.open { display: flex; }
.modal-backdrop { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(4px); }
.modal-content {
    position: relative; max-width: 600px; width: 100%; max-height: 80vh;
    overflow-y: auto; background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg); box-shadow: var(--shadow-lg);
}
.modal-close {
    position: absolute; top: 1rem; right: 1rem; width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg-tertiary); border: none; border-radius: var(--border-radius-sm);
    color: var(--text-secondary); cursor: pointer; transition: all var(--transition-fast);
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.modal-header { padding: 1.5rem 2rem; border-bottom: 1px solid var(--border-color); }
.modal-header h3 { font-size: 1.25rem; font-weight: 600; padding-right: 2rem; }
.modal-body { padding: 1.5rem 2rem; }
.modal-body p { margin-bottom: 1rem; color: var(--text-secondary); line-height: 1.7; }
.modal-body pre {
    padding: 1rem; background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm); font-family: var(--font-mono);
    font-size: 0.8rem; overflow-x: auto; color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 1200px) {
    .hero .container { grid-template-columns: 1fr; gap: 3rem; }
    .hero-visual { max-width: 600px; margin: 0 auto; }
    .about-content { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 992px) {
    :root { --section-padding: 4rem; }
    .steps-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto 3rem; }
    .faq-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; gap: 2rem; }
}
@media (max-width: 768px) {
    .container { padding: 0 1.25rem; }
    .nav, .header-actions { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero { padding-top: calc(72px + 2rem); min-height: auto; }
    .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; justify-content: center; }
    .category-tools { grid-template-columns: 1fr; }
    .options-grid { grid-template-columns: 1fr; }
    .generate-section { flex-direction: column; text-align: center; }
    .selection-summary { flex-direction: column; gap: 1rem; }
    .safety-notice { flex-direction: column; text-align: center; }
    .notice-icon { margin: 0 auto; }
    .notice-content li { text-align: left; }
    .footer-links { flex-direction: column; gap: 2rem; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-description { font-size: 1rem; }
    .stat-value { font-size: 1.5rem; }
    .terminal { font-size: 0.75rem; }
    .tool-card { flex-direction: column; }
    .tool-checkbox { align-self: flex-start; }
    .quick-actions { gap: 0.5rem; }
    .quick-btn { flex: 1; min-width: calc(50% - 0.25rem); justify-content: center; }
}