/* ============================================
   Torzon Darknet Hub - CSS Design System
   Functional Cyberpunk Aesthetic
   ============================================ */

/* === CSS Custom Properties (Design Tokens) === */
:root {
    /* Colors - Cyberpunk Palette */
    --color-primary: #00f0ff;
    --color-secondary: #ff00ff;
    --color-accent: #00ff88;
    --color-warning: #ffaa00;
    --color-danger: #ff0055;

    /* Backgrounds - Dark Theme */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #1a1f35;
    --color-bg-tertiary: #252b45;
    --color-bg-hover: #2d3451;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #a8b2d1;
    --color-text-muted: #64738b;

    /* Borders */
    --color-border: #2d3451;
    --color-border-light: #3a4365;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;

    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 240, 255, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 240, 255, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 240, 255, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p { margin-bottom: var(--spacing-md); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
}

li {
    margin-bottom: var(--spacing-sm);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

code {
    background: var(--color-bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

pre {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

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

.main-content {
    min-height: calc(100vh - 400px);
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-bg-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* === Header === */
.site-header {
    background: rgba(26, 31, 53, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.site-logo {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-primary {
    color: var(--color-primary);
}

.logo-secondary {
    font-size: 0.6em;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger-line {
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-base);
}

.nav-menu {
    display: flex;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    padding: 0;
    margin: 0;
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
    background: rgba(0, 240, 255, 0.1);
}

.security-notice {
    background: rgba(255, 170, 0, 0.1);
    border-bottom: 1px solid rgba(255, 170, 0, 0.3);
    padding: var(--spacing-sm) 0;
}

.notice-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.notice-icon {
    width: 20px;
    height: 20px;
    color: var(--color-warning);
    flex-shrink: 0;
}

.notice-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* === Footer === */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-heading {
    color: var(--color-primary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.footer-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.footer-security-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-accent);
    font-size: 0.9rem;
}

.badge-icon {
    width: 20px;
    height: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-sm);
}

.footer-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-2xl) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

.footer-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.9rem;
}

.footer-meta-link {
    color: var(--color-text-secondary);
}

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

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

.footer-disclaimer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(255, 0, 85, 0.05);
    border: 1px solid rgba(255, 0, 85, 0.2);
    border-radius: var(--radius-md);
}

.disclaimer-heading {
    color: var(--color-danger);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.disclaimer-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-glow);
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-bg-primary);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-full-width {
    width: 100%;
}

/* === Hero Section === */
.hero {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(255, 0, 255, 0.1) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

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

.title-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.6em;
    display: block;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-features-quick {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.quick-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.feature-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
}

.hero-stats-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.stats-card-title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.stats-grid-hero {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-item-hero {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-suffix {
    font-size: 0.7em;
}

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

/* === Stats Section === */
.stats-section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-value-suffix {
    font-size: 0.6em;
}

.stat-description {
    color: var(--color-text-secondary);
}

/* === Features Section === */
.features-section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
}

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

.feature-icon-container {
    width: 60px;
    height: 60px;
    background: rgba(0, 240, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.feature-icon-large {
    width: 30px;
    height: 30px;
    color: var(--color-primary);
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--color-text-secondary);
}

/* === Grid Layouts === */
.advantages-grid, .markets-preview-grid, .news-grid, .guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

/* === Cards === */
.advantage-card, .market-preview-card, .news-card, .guide-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
}

.advantage-card:hover, .market-preview-card:hover, .news-card:hover, .guide-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
}

/* === FAQ Section === */
.faq-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

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

.faq-item {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
}

.faq-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    transition: var(--transition-base);
}

.faq-item.is-open .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.is-open .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* === CTA Section === */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(255, 0, 255, 0.05));
}

.cta-content {
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* === Page Header === */
.page-header {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(255, 0, 255, 0.05));
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

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

/* === Breadcrumbs === */
.breadcrumbs-wrapper {
    padding: var(--spacing-md) 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.breadcrumbs {
    font-size: 0.9rem;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
    padding: 0;
    margin: 0;
}

.breadcrumb-item:not(:last-child)::after {
    content: "›";
    margin-left: var(--spacing-sm);
    color: var(--color-text-muted);
}

.breadcrumb-item a {
    color: var(--color-text-secondary);
}

/* === Alerts === */
.alert {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.alert-info {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    color: var(--color-primary);
}

.alert-warning {
    background: rgba(255, 170, 0, 0.1);
    border: 1px solid rgba(255, 170, 0, 0.3);
    color: var(--color-warning);
}

.alert-content strong {
    display: block;
    margin-bottom: var(--spacing-sm);
}

/* === Status Badges === */
.status-indicator, .market-status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-active {
    background: rgba(0, 255, 136, 0.2);
    color: var(--color-accent);
}

/* === Difficulty Badges === */
.guide-difficulty, .guide-difficulty-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.difficulty-beginner {
    background: rgba(0, 255, 136, 0.2);
    color: var(--color-accent);
}

.difficulty-intermediate {
    background: rgba(255, 170, 0, 0.2);
    color: var(--color-warning);
}

.difficulty-advanced {
    background: rgba(255, 0, 85, 0.2);
    color: var(--color-danger);
}

/* === Error Page === */
.error-page {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.error-code {
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.error-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.error-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

/* === Section CTA === */
.section-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        max-height: 0;
        overflow: hidden;
        transition: var(--transition-base);
    }

    .nav-menu.is-open {
        max-height: 400px;
    }

    .nav-list {
        flex-direction: column;
        padding: var(--spacing-md);
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 2rem;
    }

    .features-grid, .advantages-grid, .markets-preview-grid, .news-grid, .guides-grid {
        grid-template-columns: 1fr;
    }

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

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