/* =========================================
   RTA Blog — Styles
   Dark terminal aesthetic with red accents
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --rta-red: #be1c2d;
    --rta-red-dark: #8b1421;
    --rta-red-light: #d42c40;
    --rta-red-glow: rgba(190, 28, 45, 0.6);
    --steel-blue: #34495e;
    --steel-blue-light: #4a6378;
    --deep-gray: #2c3e50;
    --charcoal: #1a1a1a;
    --charcoal-light: #2d2d2d;
    --bg-dark: #0a0a0a;
    --bg-darker: #050505;
    --bg-card: #111113;
    --bg-card-hover: #1a1a1e;
    --bg-section-alt: #0e0e10;
    --text-primary: #e8e8e8;
    --text-secondary: #999;
    --text-muted: #555;
    --border-color: rgba(190, 28, 45, 0.12);
    --border-hover: rgba(190, 28, 45, 0.4);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 30px rgba(190, 28, 45, 0.3), 0 0 60px rgba(190, 28, 45, 0.1);
    --shadow-glow-intense: 0 0 40px rgba(190, 28, 45, 0.5), 0 0 80px rgba(190, 28, 45, 0.2);
    --font-main: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9998;
}

/* Scanline overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 9997;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--rta-red);
    color: #fff;
    padding: 8px;
    z-index: 9999;
}

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

/* =========================================
   Scroll-Reveal Animations
   ========================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-reveal > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo);
}

.stagger-reveal.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-reveal.visible > *:nth-child(2) { transition-delay: 0.07s; }
.stagger-reveal.visible > *:nth-child(3) { transition-delay: 0.14s; }
.stagger-reveal.visible > *:nth-child(4) { transition-delay: 0.21s; }
.stagger-reveal.visible > *:nth-child(5) { transition-delay: 0.28s; }
.stagger-reveal.visible > *:nth-child(6) { transition-delay: 0.35s; }
.stagger-reveal.visible > *:nth-child(7) { transition-delay: 0.42s; }
.stagger-reveal.visible > *:nth-child(8) { transition-delay: 0.49s; }
.stagger-reveal.visible > *:nth-child(9) { transition-delay: 0.56s; }
.stagger-reveal.visible > *:nth-child(10) { transition-delay: 0.63s; }

.stagger-reveal.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   Navigation
   ========================================= */
.navbar {
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.4s, box-shadow 0.4s;
}

.navbar.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo .logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-image {
    width: 40px;
    height: 40px;
    transition: filter 0.3s;
}

.nav-logo:hover .logo-image {
    filter: drop-shadow(0 0 8px var(--rta-red-glow));
}

.logo-name {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    transition: color 0.3s;
    letter-spacing: 0.01em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--rta-red);
    transition: width 0.3s var(--ease-out-expo);
    box-shadow: 0 0 8px var(--rta-red-glow);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s var(--ease-out-expo);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
    background: var(--rta-red);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
    background: var(--rta-red);
}

/* =========================================
   Page Hero
   ========================================= */
.page-hero {
    padding: 10rem 0 3.5rem;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

/* Animated grid background */
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(190, 28, 45, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(190, 28, 45, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridDrift 20s linear infinite;
}

/* Red glow orb */
.page-hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(190, 28, 45, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: orbFloat 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes gridDrift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 20px) scale(1.1); }
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    position: relative;
    letter-spacing: -0.03em;
    animation: titleReveal 0.8s var(--ease-out-expo) both;
}

@keyframes titleReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
        filter: blur(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

.terminal-prompt {
    color: var(--rta-red);
    font-family: var(--font-mono);
    text-shadow: 0 0 20px var(--rta-red-glow);
}

.cursor {
    color: var(--rta-red);
    animation: cursorBlink 1s step-end infinite;
    text-shadow: 0 0 10px var(--rta-red-glow);
}

@keyframes cursorBlink {
    50% { opacity: 0; }
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 550px;
    line-height: 1.6;
    animation: subtitleReveal 0.8s 0.15s var(--ease-out-expo) both;
}

@keyframes subtitleReveal {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
   Tag Filters
   ========================================= */
.tag-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2.5rem;
    padding-top: 2.5rem;
}

.tag-filter-btn {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
    transition: all 0.3s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.tag-filter-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--rta-red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out-expo);
    z-index: -1;
}

.tag-filter-btn:hover::before,
.tag-filter-btn.active::before {
    transform: scaleX(1);
}

.tag-filter-btn:hover,
.tag-filter-btn.active {
    border-color: var(--rta-red);
    color: #fff;
    box-shadow: 0 0 15px rgba(190, 28, 45, 0.2);
}

/* =========================================
   Posts Grid (Index / Tag pages)
   ========================================= */
.blog-listing {
    padding-bottom: 4rem;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

/* Post Card — the main interactive element */
.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
    position: relative;
    transition: all 0.4s var(--ease-out-expo);
}

/* Animated top border accent */
.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--rta-red), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

/* Corner glow effect */
.post-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(190, 28, 45, 0.08) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.post-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
    background: var(--bg-card-hover);
}

.post-card:hover::before {
    opacity: 1;
}

.post-card:hover::after {
    opacity: 1;
}

.post-card:hover .post-card-title {
    color: #fff;
}

.post-card:hover .post-card-arrow {
    opacity: 1;
    transform: translateX(0);
}

.post-card-content {
    padding: 1.75rem;
    position: relative;
    z-index: 1;
}

.post-card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
    transition: color 0.3s;
    letter-spacing: -0.01em;
}

.post-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
    font-family: var(--font-mono);
}

.post-card-event {
    display: inline-block;
    background: rgba(52, 73, 94, 0.3);
    color: var(--steel-blue-light);
    font-size: 0.72rem;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    margin-bottom: 0.75rem;
    border: 1px solid rgba(52, 73, 94, 0.3);
    font-family: var(--font-mono);
}

.post-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 1.25rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag-badge-sm {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    background: rgba(190, 28, 45, 0.08);
    color: var(--rta-red-light);
    border-radius: 3px;
    font-family: var(--font-mono);
    border: 1px solid rgba(190, 28, 45, 0.15);
    transition: all 0.3s;
}

.post-card:hover .tag-badge-sm {
    background: rgba(190, 28, 45, 0.15);
    border-color: rgba(190, 28, 45, 0.3);
}

.post-card-arrow {
    color: var(--rta-red);
    font-size: 1.2rem;
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s var(--ease-out-expo);
}

.empty-state {
    text-align: center;
    padding: 4rem 0;
    color: var(--text-muted);
    font-size: 1.1rem;
    font-family: var(--font-mono);
}

/* =========================================
   Single Post Page
   ========================================= */
.post-page {
    padding-bottom: 4rem;
}

.post-header {
    padding: 10rem 0 2.5rem;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.post-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(190, 28, 45, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(190, 28, 45, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    transition: all 0.3s;
    position: relative;
}

.back-link:hover {
    color: var(--rta-red);
    transform: translateX(-4px);
}

.post-title {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
    animation: titleReveal 0.8s var(--ease-out-expo) both;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
    font-family: var(--font-mono);
    animation: subtitleReveal 0.8s 0.1s var(--ease-out-expo) both;
}

.post-meta span::before {
    margin-right: 0.3rem;
}

.post-author::before { content: "by "; color: var(--text-muted); }

.post-event {
    background: rgba(52, 73, 94, 0.3);
    color: var(--steel-blue-light);
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    font-size: 0.78rem;
    border: 1px solid rgba(52, 73, 94, 0.3);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    animation: subtitleReveal 0.8s 0.2s var(--ease-out-expo) both;
}

.tag-badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: rgba(190, 28, 45, 0.08);
    color: var(--rta-red-light);
    border: 1px solid rgba(190, 28, 45, 0.2);
    border-radius: 4px;
    font-size: 0.78rem;
    text-decoration: none;
    font-family: var(--font-mono);
    transition: all 0.3s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.tag-badge::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--rta-red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out-expo);
    z-index: -1;
}

.tag-badge:hover::before {
    transform: scaleX(1);
}

.tag-badge:hover {
    color: #fff;
    border-color: var(--rta-red);
    box-shadow: 0 0 12px rgba(190, 28, 45, 0.3);
}

/* Post Layout (sidebar TOC + body) */
.post-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-top: 2.5rem;
}

@media (min-width: 900px) {
    .post-layout {
        grid-template-columns: 220px 1fr;
    }
}

/* Table of Contents Sidebar */
.toc-sidebar {
    order: -1;
}

.toc-wrapper {
    position: sticky;
    top: 6rem;
}

.toc-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}

.toc-wrapper .toc ul {
    list-style: none;
    padding-left: 0;
}

.toc-wrapper .toc ul ul {
    padding-left: 1rem;
}

.toc-wrapper .toc a {
    display: block;
    padding: 0.3rem 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.82rem;
    border-left: 2px solid rgba(190, 28, 45, 0.1);
    padding-left: 0.75rem;
    transition: all 0.3s var(--ease-out-expo);
}

.toc-wrapper .toc a:hover,
.toc-wrapper .toc a.active {
    color: var(--rta-red);
    border-left-color: var(--rta-red);
    padding-left: 1rem;
    text-shadow: 0 0 10px rgba(190, 28, 45, 0.3);
}

/* =========================================
   Post Body — Markdown Content
   ========================================= */
.post-body {
    max-width: 800px;
    line-height: 1.85;
}

.post-body h2 {
    font-size: 1.5rem;
    margin-top: 3rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-color);
    letter-spacing: -0.02em;
    position: relative;
}

.post-body h2::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--rta-red);
    box-shadow: 0 0 10px var(--rta-red-glow);
}

.post-body h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.post-body h4 {
    font-size: 1.05rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.post-body p {
    margin-bottom: 1.3rem;
    color: var(--text-secondary);
}

.post-body a {
    color: var(--rta-red-light);
    text-decoration: none;
    border-bottom: 1px solid rgba(212, 44, 64, 0.2);
    transition: all 0.2s;
}

.post-body a:hover {
    border-bottom-color: var(--rta-red-light);
    text-shadow: 0 0 8px rgba(190, 28, 45, 0.3);
}

.post-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.post-body ul,
.post-body ol {
    margin-bottom: 1.3rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.post-body li {
    margin-bottom: 0.4rem;
}

.post-body li::marker {
    color: var(--rta-red);
}

.post-body blockquote {
    border-left: 3px solid var(--rta-red);
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
    background: rgba(190, 28, 45, 0.04);
    border-radius: 0 6px 6px 0;
    color: var(--text-secondary);
    position: relative;
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
    transition: all 0.4s;
}

.post-body img:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

/* Inline code */
.post-body code {
    background: rgba(190, 28, 45, 0.06);
    padding: 0.15rem 0.45rem;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--rta-red-light);
    border: 1px solid rgba(190, 28, 45, 0.12);
}

/* Code blocks */
.post-body pre {
    margin: 1.5rem 0;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.post-body pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
    font-size: 0.85em;
}

.post-body .codehilite {
    background: #0d0d0f;
    padding: 1.25rem 1.5rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    margin: 1.5rem 0;
    position: relative;
    transition: border-color 0.4s, box-shadow 0.4s;
}

/* Code block hover glow */
.post-body .codehilite:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 20px rgba(190, 28, 45, 0.1);
}

/* Language label on code blocks */
.post-body .codehilite[data-lang]::before {
    content: attr(data-lang);
    position: absolute;
    top: 0;
    right: 0;
    padding: 0.2rem 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(190, 28, 45, 0.06);
    border-bottom-left-radius: 4px;
    border-left: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.post-body .codehilite pre {
    margin: 0;
    border: none;
    background: none;
}

/* Tables */
.post-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.post-body th,
.post-body td {
    padding: 0.65rem 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

.post-body th {
    background: rgba(190, 28, 45, 0.06);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
}

.post-body td {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.post-body tr:hover td {
    background: rgba(190, 28, 45, 0.03);
}

.post-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2.5rem 0;
}

/* =========================================
   Footer
   ========================================= */
footer {
    background-color: var(--bg-darker);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 0.75rem;
}

.footer-section h3 {
    color: var(--rta-red);
}

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

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.4rem;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: var(--rta-red);
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

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

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1rem 20px;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        animation: menuSlideDown 0.3s var(--ease-out-expo);
    }

    @keyframes menuSlideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

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

    .nav-menu li {
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

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

    .post-title {
        font-size: 1.6rem;
    }

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

    .post-layout {
        grid-template-columns: 1fr;
    }

    .toc-sidebar {
        order: 0;
    }

    .toc-wrapper {
        position: static;
        background: var(--bg-card);
        padding: 1rem 1.25rem;
        border-radius: 6px;
        border: 1px solid var(--border-color);
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.6rem;
    }

    .post-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}

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

    .reveal {
        opacity: 1;
        transform: none;
    }

    .stagger-reveal > * {
        opacity: 1;
        transform: none;
    }
}