/**
 * ForexRabbit - Premium Fintech Design System
 *
 * Palette:
 * - Deep Navy: #0A1128 (Background Primary), #101F42 (Card Surface), #162B5B (Elevated Surface)
 * - Restrained Emerald: #10B981 (Brand Accent), #059669 (Hover), #042A1E (Contrast Text)
 * - Text: #F8FAFC (Primary White), #94A3B8 (Muted Slate), #64748B (Dim Slate)
 * - Borders: #1E3A8A (Border Accent), rgba(255, 255, 255, 0.08) (Subtle Line)
 */

/* ==========================================================================
   1. Design Tokens & CSS Custom Properties
   ========================================================================== */
:root {
    --color-bg-primary: #0A1128;
    --color-bg-surface: #101F42;
    --color-bg-elevated: #162B5B;
    --color-bg-alt: #070D1F;
    --color-border: #1E3A8A;
    --color-border-subtle: rgba(255, 255, 255, 0.08);

    --color-text-main: #F8FAFC;
    --color-text-muted: #94A3B8;
    --color-text-dim: #64748B;

    --color-emerald: #10B981;
    --color-emerald-hover: #059669;
    --color-emerald-tint: rgba(16, 185, 129, 0.12);
    --color-emerald-dark: #042A1E;

    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-warning-border: rgba(245, 158, 11, 0.3);
    --color-warning-text: #FBBF24;

    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --container-max: 1200px;
    --container-article: 840px;
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    color-scheme: dark;
}

body.site-body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-main);
    font-family: var(--font-stack);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Skip link for keyboard accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 1rem;
    background: var(--color-emerald);
    color: var(--color-emerald-dark);
    padding: 0.5rem 1rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    z-index: 9999;
    transition: top 0.2s ease;
}
.skip-link:focus {
    top: 1rem;
}

/* Accessible Focus Ring */
:focus-visible {
    outline: 2px solid var(--color-emerald);
    outline-offset: 3px;
}

/* Page Containers */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.article-container {
    max-width: var(--container-article);
}

h1, h2, h3, h4 {
    color: var(--color-text-main);
    font-weight: 700;
    line-height: 1.25;
}

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

/* ==========================================================================
   3. Buttons & Interactive Controls
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--color-emerald-hover);
    color: #FFFFFF;
}

.btn-secondary {
    background-color: var(--color-bg-surface);
    color: var(--color-text-main);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-elevated);
    border-color: var(--color-emerald);
}

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text-main);
}

.btn-outline:hover {
    border-color: var(--color-emerald);
    color: var(--color-emerald);
}

.btn-sm {
    padding: 0.45rem 0.95rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.95rem 2rem;
    font-size: 1.05rem;
}

.btn-block {
    width: 100%;
}

/* ==========================================================================
   4. Site Header & Navigation
   ========================================================================== */
.site-header {
    background-color: rgba(10, 17, 40, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-subtle);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.site-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand-symbol {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-emerald-tint);
    border: 1px solid var(--color-emerald);
    border-radius: var(--radius-sm);
    color: var(--color-emerald);
    font-size: 0.85rem;
    font-weight: 800;
}

.brand-accent {
    color: var(--color-emerald);
}

/* Nav Menu */
.site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-link {
    color: var(--color-text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 0.25rem 0;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-text-main);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-emerald);
    border-radius: 2px;
}

/* Mobile Nav Toggle Button */
.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text-main);
    transition: var(--transition);
}

/* ==========================================================================
   5. Hero Section
   ========================================================================== */
.hero-section {
    padding: 5rem 0 4.5rem;
    background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.08) 0%, transparent 60%);
    border-bottom: 1px solid var(--color-border-subtle);
}

.hero-inner {
    max-width: 860px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 9999px;
    font-size: 0.825rem;
    color: var(--color-emerald);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--color-emerald);
}

.hero-title {
    font-size: 2.85rem;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 2.5rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-value {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--color-text-main);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   6. Sections, Headers, & Grids
   ========================================================================== */
.section {
    padding: 5rem 0;
}

.section-dark {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border-subtle);
    border-bottom: 1px solid var(--color-border-subtle);
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 3.5rem;
}

.section-tag {
    display: inline-block;
    color: var(--color-emerald);
    font-size: 0.825rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.15rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

/* Category Cards Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.category-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.25rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transition: var(--transition);
}

.category-card:hover {
    border-color: var(--color-emerald);
    transform: translateY(-2px);
}

.category-icon {
    font-size: 2.25rem;
}

.category-title {
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
}

.category-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.category-link {
    color: var(--color-emerald);
    font-weight: 600;
    font-size: 0.92rem;
}

/* Product Cards Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.product-card:hover {
    border-color: var(--color-emerald);
    transform: translateY(-2px);
}

.product-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.product-badge {
    background: var(--color-emerald-tint);
    color: var(--color-emerald);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.product-platforms {
    display: flex;
    gap: 0.4rem;
}

.platform-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
}

.product-title {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}

.product-title a:hover {
    color: var(--color-emerald);
}

.product-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.75rem;
}

.product-footer {
    margin-top: auto;
    padding-top: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--color-border-subtle);
}

.product-price-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ==========================================================================
   7. Page Headers, Breadcrumbs, & Filter Tabs
   ========================================================================== */
.page-header {
    background: linear-gradient(180deg, rgba(16, 31, 66, 0.5) 0%, transparent 100%);
    border-bottom: 1px solid var(--color-border-subtle);
    padding: 3.5rem 0 2.5rem;
}

.page-title {
    font-size: 2.4rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.page-subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 720px;
}

.page-content {
    padding: 3.5rem 0 5rem;
}

.breadcrumbs {
    margin-bottom: 1.5rem;
}

.breadcrumbs ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

.breadcrumbs li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--color-border);
}

.breadcrumbs a {
    color: var(--color-text-muted);
}

.breadcrumbs a:hover {
    color: var(--color-emerald);
}

.breadcrumbs [aria-current="page"] {
    color: var(--color-emerald);
    font-weight: 600;
}

/* Category Filter Tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
}

.tab-link {
    padding: 0.5rem 1rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 9999px;
}

.tab-link:hover {
    color: var(--color-text-main);
    border-color: var(--color-emerald);
}

.tab-link.active {
    background: var(--color-emerald);
    color: var(--color-emerald-dark);
    border-color: var(--color-emerald);
}

/* Catalog Filter Controls Bar */
.catalog-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2.5rem;
}

.catalog-filter-form {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    flex: 1;
}

.filter-search-group {
    flex: 1;
    min-width: 220px;
}

.filter-input {
    width: 100%;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.55rem 0.95rem;
    color: var(--color-text-main);
    font-size: 0.9rem;
}

.filter-select {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.55rem 0.95rem;
    color: var(--color-text-main);
    font-size: 0.9rem;
}

.filter-actions-group {
    display: flex;
    gap: 0.5rem;
}

.catalog-count-badge {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Pagination Navigation */
.pagination-nav {
    margin-top: 3.5rem;
    display: flex;
    justify-content: center;
}

.pagination-list {
    list-style: none;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-main);
    font-size: 0.9rem;
    font-weight: 600;
}

.pagination-link:hover {
    border-color: var(--color-emerald);
    color: var(--color-emerald);
}

.pagination-link.active {
    background-color: var(--color-emerald);
    border-color: var(--color-emerald);
    color: var(--color-emerald-dark);
}

/* ==========================================================================
   8. Product Detail Layout
   ========================================================================== */
.product-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

.product-badges-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.product-hero-title {
    font-size: 2.4rem;
    margin-bottom: 0.75rem;
}

.product-hero-tagline {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.product-section {
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: 2.5rem;
}

.section-heading-sm {
    font-size: 1.35rem;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.lead-text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.feature-bullets {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.feature-bullets li {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    font-size: 1rem;
    color: var(--color-text-muted);
}

.bullet-icon {
    color: var(--color-emerald);
    font-weight: 800;
}

.specs-box {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.specs-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.specs-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.warning-callout {
    display: flex;
    gap: 1rem;
    background-color: var(--color-warning-bg);
    border: 1px solid var(--color-warning-border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    color: var(--color-warning-text);
    font-size: 0.92rem;
    line-height: 1.6;
}

.warning-icon {
    font-size: 1.25rem;
}

/* Order / Checkout Sidebar */
.product-sidebar {
    position: sticky;
    top: 96px;
}

.order-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.order-type {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-emerald);
    font-weight: 700;
}

.order-price-row {
    display: flex;
    align-items: baseline;
}

.order-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-main);
}

.order-notice {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.order-notice-badge {
    display: inline-block;
    background: var(--color-emerald-tint);
    color: var(--color-emerald);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.order-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.order-guarantees {
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   9. Blog & Article Styles
   ========================================================================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.article-card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.article-card:hover {
    border-color: var(--color-emerald);
    transform: translateY(-2px);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.825rem;
    margin-bottom: 1rem;
}

.article-category {
    color: var(--color-emerald);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-read-time {
    color: var(--color-text-dim);
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.article-title a:hover {
    color: var(--color-emerald);
}

.article-excerpt {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.article-footer {
    margin-top: auto;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border-subtle);
}

.article-link {
    color: var(--color-emerald);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Featured Article Card */
.featured-article-card {
    background: linear-gradient(135deg, var(--color-bg-surface) 0%, var(--color-bg-elevated) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.featured-badge {
    display: inline-block;
    background-color: var(--color-emerald);
    color: var(--color-emerald-dark);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
}

.featured-title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.featured-title a:hover {
    color: var(--color-emerald);
}

.featured-excerpt {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 720px;
    margin-bottom: 2rem;
}

/* Single Article Body */
.article-headline {
    font-size: 2.6rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.article-lead {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.toc-box {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem 2rem;
    margin-bottom: 3rem;
}

.toc-title {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-main);
}

.toc-list {
    margin-left: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toc-list a {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.toc-list a:hover {
    color: var(--color-emerald);
}

.article-body {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    font-size: 1.05rem;
    line-height: 1.75;
    color: #CBD5E1;
}

.article-section h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: var(--color-text-main);
    letter-spacing: -0.01em;
}

.article-section p {
    margin-bottom: 1.25rem;
}

.article-product-callout {
    background: var(--color-bg-surface);
    border-left: 4px solid var(--color-emerald);
    border-radius: var(--radius-sm);
    padding: 2rem;
    margin: 3.5rem 0;
}

.callout-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-emerald);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.35rem;
}

.callout-header h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.callout-actions {
    margin-top: 1.25rem;
}

.related-articles-section {
    margin-top: 4.5rem;
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 3.5rem;
}

/* ==========================================================================
   10. Forms, Contact, & Interactive Elements
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 1.85rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-card {
    display: flex;
    gap: 1rem;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.contact-icon {
    font-size: 1.75rem;
}

.contact-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.contact-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.contact-form-container {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.form-banner {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid var(--color-emerald);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.75rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.form-banner strong {
    color: var(--color-emerald);
    display: block;
    margin-bottom: 0.25rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    color: var(--color-text-main);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--color-emerald);
    background-color: #0E1838;
}

.form-status {
    margin-top: 1rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

.form-status.success {
    color: var(--color-emerald);
    padding: 0.75rem;
    background: var(--color-emerald-tint);
    border-radius: var(--radius-sm);
}

.form-status.error {
    color: var(--color-warning-text);
    padding: 0.75rem;
    background: var(--color-warning-bg);
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   11. Transparency Section & Code Snippet Callouts
   ========================================================================== */
.transparency-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.check-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin: 1.75rem 0 2rem;
}

.check-list li {
    font-size: 0.98rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.check-list strong {
    color: var(--color-text-main);
}

.transparency-card {
    background: #040915;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.card-metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border-subtle);
    padding-bottom: 1rem;
    margin-bottom: 1.25rem;
}

.metric-title {
    font-size: 0.9rem;
    font-weight: 700;
}

.metric-status {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-emerald);
    background: var(--color-emerald-tint);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
}

.code-preview {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    background: rgba(0, 0, 0, 0.4);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    color: #E2E8F0;
}

.code-comment { color: #64748B; }
.code-keyword { color: #38BDF8; font-weight: 700; }
.code-string { color: #34D399; }

.code-caption {
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

/* ==========================================================================
   12. Notices, Empty States, & Call To Actions
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    max-width: 600px;
    margin: 0 auto;
}

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

.empty-state-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.empty-state-text {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.info-notice {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-top: 3.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.notice-icon {
    font-size: 1.25rem;
}

.cta-box {
    background: linear-gradient(135deg, var(--color-bg-surface) 0%, var(--color-bg-elevated) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
    text-align: center;
    max-width: 860px;
}

.cta-title {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.cta-desc {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ==========================================================================
   13. Footer
   ========================================================================== */
.site-footer {
    background-color: #060B18;
    border-top: 1px solid var(--color-border-subtle);
    padding: 4.5rem 0 2.5rem;
    margin-top: auto;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3.5rem;
}

.footer-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 1.25rem;
    max-width: 360px;
    line-height: 1.6;
}

.footer-security-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.footer-heading {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-main);
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

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

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

.footer-bottom {
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.disclaimer {
    line-height: 1.5;
}

/* ==========================================================================
   14. Responsive Breakpoints & Accessibility
   ========================================================================== */
@media (max-width: 1024px) {
    .product-layout {
        grid-template-columns: 1fr;
    }
    .product-sidebar {
        position: static;
        order: -1;
        margin-bottom: 2.5rem;
    }
    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
    .transparency-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 900px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
    .nav-toggle {
        display: flex;
    }
    .site-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.5rem;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    }
    .site-nav.open {
        display: flex;
    }
    .nav-list {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }
    .nav-link {
        font-size: 1.05rem;
    }
    .nav-actions {
        width: 100%;
    }
    .nav-actions .btn {
        width: 100%;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}

@media (max-width: 640px) {
    .hero-actions, .cta-actions {
        flex-direction: column;
    }
    .hero-title {
        font-size: 1.85rem;
    }
    .footer-inner {
        grid-template-columns: 1fr;
    }
    .featured-article-card {
        padding: 1.75rem;
    }
    .featured-title {
        font-size: 1.5rem;
    }
}

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