/*
 * Nexus Market Portal - Main Stylesheet
 * Dark theme design system with responsive layouts
 */

/* ==========================================================================
   CSS CUSTOM PROPERTIES - Design Tokens
   ========================================================================== */

:root {
    /* Color Palette - Dark Theme */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #121212;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-elevated: #1e1e1e;
    --color-bg-overlay: rgba(0, 0, 0, 0.85);

    --color-text-primary: #e8e8e8;
    --color-text-secondary: #b8b8b8;
    --color-text-tertiary: #888888;
    --color-text-inverse: #0a0a0a;

    --color-accent-primary: #00d9ff;
    --color-accent-primary-hover: #00b8e6;
    --color-accent-primary-rgb: 0, 217, 255;

    --color-accent-secondary: #8b5cf6;
    --color-accent-secondary-hover: #7c3aed;

    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    --color-border-subtle: #2a2a2a;
    --color-border-default: #333333;
    --color-border-strong: #444444;

    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing Scale */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */

    /* Border Radius */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(var(--color-accent-primary-rgb), 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Layout */
    --container-max-width: 1200px;
    --header-height: 80px;
    --footer-height: auto;

    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ==========================================================================
   CSS RESET & BASE STYLES
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Typography Reset */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* Accessibility - Skip to Content Link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent-primary);
    color: var(--color-text-inverse);
    padding: var(--spacing-3) var(--spacing-6);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    z-index: var(--z-tooltip);
    font-weight: var(--font-weight-semibold);
}

.skip-to-content:focus {
    top: 0;
}

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-6);
    padding-right: var(--spacing-6);
}

@media (max-width: 768px) {
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
}

/* Content Wrapper */
.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-default);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: translateY(-2px);
    color: var(--color-text-primary);
}

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

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text-main {
    font-size: var(--font-size-xl);
}

.logo-text-sub {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-normal);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-6);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-accent-primary);
    background-color: rgba(var(--color-accent-primary-rgb), 0.1);
}

.nav-link.active {
    color: var(--color-accent-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: var(--spacing-3);
    right: var(--spacing-3);
    height: 2px;
    background-color: var(--color-accent-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    padding: var(--spacing-2);
}

.hamburger-icon {
    width: 28px;
    height: 28px;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border-default);
        padding: var(--spacing-6);
        flex-direction: column;
        gap: var(--spacing-4);
    }

    .main-nav.active {
        display: flex;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-2);
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-4);
    }
}

/* Security Banner */
.security-banner {
    background: linear-gradient(90deg, rgba(239, 68, 68, 0.1), rgba(245, 158, 11, 0.1));
    border-bottom: 1px solid var(--color-warning);
    padding: var(--spacing-3) 0;
}

.banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
}

.banner-content strong {
    color: var(--color-warning);
    font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-default);
    padding: var(--spacing-16) 0 var(--spacing-8);
    margin-top: var(--spacing-20);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-10);
    margin-bottom: var(--spacing-12);
}

.footer-column h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
    color: var(--color-text-primary);
}

.footer-column p {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.footer-links a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
}

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

.footer-disclaimer {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-warning);
}

.footer-disclaimer h4 {
    font-size: var(--font-size-base);
    color: var(--color-warning);
    margin-bottom: var(--spacing-3);
}

.footer-disclaimer p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    line-height: var(--line-height-relaxed);
}

.footer-bottom {
    border-top: 1px solid var(--color-border-subtle);
    padding-top: var(--spacing-6);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-8);
    right: var(--spacing-8);
    width: 48px;
    height: 48px;
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

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

.back-to-top:hover {
    background-color: var(--color-accent-primary-hover);
    transform: translateY(-4px);
}

/* ==========================================================================
   BREADCRUMBS
   ========================================================================== */

.breadcrumbs {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--color-border-subtle);
}

.breadcrumbs nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.breadcrumb-link {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--color-accent-primary);
}

.breadcrumb-separator {
    color: var(--color-text-tertiary);
    user-select: none;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-accent-primary);
}

.btn-primary:hover {
    background-color: var(--color-accent-primary-hover);
    border-color: var(--color-accent-primary-hover);
    color: var(--color-text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

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

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-5) var(--spacing-10);
    font-size: var(--font-size-lg);
}

/* ==========================================================================
   BADGES
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-beginner {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.badge-intermediate {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

.badge-advanced {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

/* ==========================================================================
   ALERTS & NOTICES
   ========================================================================== */

.alert-danger,
.alert-warning,
.content-block.alert-danger,
.content-block.alert-warning {
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-6);
}

.alert-danger,
.content-block.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-danger);
    border-left-width: 4px;
}

.alert-danger h2,
.alert-danger h3,
.alert-danger .content-heading {
    color: var(--color-danger);
    margin-bottom: var(--spacing-4);
}

.alert-warning,
.content-block.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    border-left-width: 4px;
}

.alert-warning h2,
.alert-warning h3,
.alert-warning .content-heading {
    color: var(--color-warning);
    margin-bottom: var(--spacing-4);
}

/* ==========================================================================
   PAGE HEADER
   ========================================================================== */

.page-header {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    padding: var(--spacing-16) 0;
    text-align: center;
    border-bottom: 1px solid var(--color-border-default);
}

.page-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-4);
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .page-title {
        font-size: var(--font-size-3xl);
    }

    .page-subtitle {
        font-size: var(--font-size-lg);
    }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 100%);
    padding: var(--spacing-24) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(var(--color-accent-primary-rgb), 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-6xl);
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

.title-accent {
    display: block;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: var(--spacing-2);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-10);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-16) 0;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
}

/* ==========================================================================
   STATISTICS SECTION
   ========================================================================== */

.stats-section {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-16) 0;
    border-top: 1px solid var(--color-border-default);
    border-bottom: 1px solid var(--color-border-default);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-10);
}

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

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-primary);
    line-height: 1;
    margin-bottom: var(--spacing-3);
}

.stat-suffix {
    font-size: var(--font-size-3xl);
    margin-left: var(--spacing-1);
}

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

/* ==========================================================================
   SECTION COMPONENTS
   ========================================================================== */

.section-title {
    font-size: var(--font-size-4xl);
    text-align: center;
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header {
    margin-bottom: var(--spacing-12);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-12);
}

/* Features Section */
.features-section {
    padding: var(--spacing-20) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
}

.feature-card {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-default);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-6);
}

.feature-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-4);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.feature-link {
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.feature-link:hover {
    gap: var(--spacing-3);
}

/* Guides Section */
.guides-section {
    padding: var(--spacing-20) 0;
    background-color: var(--color-bg-secondary);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-6);
}

.guide-card {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    transition: all var(--transition-base);
    text-decoration: none;
    display: block;
}

.guide-card:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.guide-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.guide-title {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.guide-description {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.guide-arrow {
    color: var(--color-accent-primary);
    font-size: var(--font-size-2xl);
    transition: transform var(--transition-fast);
}

.guide-card:hover .guide-arrow {
    transform: translateX(4px);
}

/* Trust Section */
.trust-section {
    padding: var(--spacing-20) 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-10);
}

.trust-column h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-6);
}

.trust-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.trust-item {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.trust-item::before {
    content: '✓';
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.trust-positive {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--color-success);
}

.trust-positive::before {
    color: var(--color-success);
}

.trust-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--color-warning);
}

.trust-warning::before {
    content: '!';
    color: var(--color-warning);
}

@media (max-width: 768px) {
    .trust-grid {
        grid-template-columns: 1fr;
    }
}

/* Updates Section */
.updates-section {
    padding: var(--spacing-20) 0;
    background-color: var(--color-bg-secondary);
}

.updates-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent-primary);
}

.update-date {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-3);
}

.update-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
}

.update-excerpt {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */

.faq-section {
    padding: var(--spacing-20) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.faq-item {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-5);
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-bg-tertiary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-accent-primary);
}

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

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

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

.faq-answer p {
    padding: 0 var(--spacing-5) var(--spacing-5);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   CTA SECTIONS
   ========================================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    padding: var(--spacing-20) 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-6);
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-8);
}

.wiki-cta {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-12) 0;
}

.cta-box {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-10);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-default);
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================================================
   CONTENT SECTIONS (Wiki, Guides, About)
   ========================================================================== */

.content-section {
    padding: var(--spacing-16) 0;
}

.content-block {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-8);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    margin-bottom: var(--spacing-8);
}

.content-heading {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-6);
}

.content-subheading {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-6);
    margin-bottom: var(--spacing-4);
    color: var(--color-accent-primary);
}

.content-text {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.content-list {
    list-style: none;
    padding-left: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.content-list li {
    position: relative;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    padding-left: var(--spacing-4);
}

.content-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-bold);
}

.warning-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.warning-item {
    padding: var(--spacing-4);
    background-color: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

.highlight-block {
    background: linear-gradient(135deg, rgba(var(--color-accent-primary-rgb), 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid var(--color-accent-primary);
}

.disclaimer-block {
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-strong);
}

/* Source Cards */
.source-card {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    margin-bottom: var(--spacing-6);
}

.source-name {
    font-size: var(--font-size-xl);
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-3);
}

.source-description,
.source-url,
.source-verification {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2);
}

.source-url strong,
.source-verification strong {
    color: var(--color-text-primary);
}

/* Resources Grid */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4);
}

.resource-link {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-default);
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: block;
}

.resource-link:hover {
    border-color: var(--color-accent-primary);
    background-color: rgba(var(--color-accent-primary-rgb), 0.1);
    transform: translateX(4px);
}

.resources-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.resources-term {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.resources-definition {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

/* Expertise Grid */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}

.expertise-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-default);
}

.expertise-icon {
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

/* ==========================================================================
   WIKI HUB
   ========================================================================== */

.featured-guides {
    padding: var(--spacing-16) 0;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.featured-card {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-default);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.featured-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
}

.featured-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.featured-title {
    font-size: var(--font-size-2xl);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-4);
}

.featured-excerpt {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.featured-arrow {
    color: var(--color-accent-primary);
    font-size: var(--font-size-2xl);
    display: block;
    transition: transform var(--transition-fast);
}

.featured-card:hover .featured-arrow {
    transform: translateX(8px);
}

/* Categories Section */
.categories-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-bg-secondary);
}

.category-block {
    margin-bottom: var(--spacing-12);
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-default);
}

.category-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.category-icon-wrapper {
    padding: var(--spacing-4);
    background: linear-gradient(135deg, rgba(var(--color-accent-primary-rgb), 0.2), rgba(139, 92, 246, 0.2));
    border-radius: var(--radius-lg);
}

.category-icon {
    color: var(--color-accent-primary);
}

.category-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-3);
}

.category-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.guides-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-4);
}

.guide-item {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.guide-item:hover {
    border-color: var(--color-accent-primary);
    background-color: var(--color-bg-elevated);
    transform: translateX(4px);
}

.guide-item-title {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

.guide-item-badge {
    flex-shrink: 0;
}

/* ==========================================================================
   ERROR PAGES
   ========================================================================== */

.error-page {
    padding: var(--spacing-24) 0;
    text-align: center;
}

.error-content {
    max-width: 700px;
    margin: 0 auto;
}

.error-code {
    font-size: 8rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-6);
}

.error-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-4);
}

.error-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-10);
}

.error-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-12);
}

.error-links {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-default);
}

.error-links h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-6);
}

.error-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

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

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

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

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

.text-primary {
    color: var(--color-accent-primary);
}

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

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.hidden {
    display: none;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1024px) {
    :root {
        --font-size-6xl: 3rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-16: 3rem;
        --spacing-20: 4rem;
        --spacing-24: 4.5rem;
    }

    .features-grid,
    .guides-grid,
    .featured-grid,
    .guides-list {
        grid-template-columns: 1fr;
    }

    .category-header {
        flex-direction: column;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .site-header,
    .site-footer,
    .mobile-menu-toggle,
    .back-to-top,
    .security-banner,
    .btn {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }
}