/* ═══════════════════════════════════════════════════════════════════════════
   BEYOND LOGIC LABS - V3 DESIGN SYSTEM
   Light mode terminal aesthetic with cyan-pink gradient accents
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── FONTS ───────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

/* ── CSS CUSTOM PROPERTIES ───────────────────────────────────────────────── */
:root {
  /* Core Colors - Light Theme */
  --color-bg-deep: #f5f3ef;
  --color-bg: #faf8f5;
  --color-bg-elevated: #ffffff;
  --color-bg-surface: #f0eee9;
  --color-bg-hover: #e8e6e1;

  /* Gradient Colors */
  --color-gradient-start: #4cc9f0;
  --color-gradient-mid: #7b68ee;
  --color-gradient-end: #f72585;

  /* Primary - Cyan */
  --color-primary: #4cc9f0;
  --color-primary-dim: #3aa8c9;
  --color-primary-bright: #6dd4f5;
  --color-primary-glow: rgba(76, 201, 240, 0.15);
  --color-primary-intense: rgba(76, 201, 240, 0.3);

  /* Secondary - Pink */
  --color-secondary: #f72585;
  --color-secondary-dim: #d91e73;
  --color-secondary-bright: #f94d9b;
  --color-secondary-glow: rgba(247, 37, 133, 0.15);

  /* Accent - Purple */
  --color-accent: #7b68ee;
  --color-accent-dim: #6454d4;
  --color-accent-glow: rgba(123, 104, 238, 0.15);

  /* Text Colors */
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #4a4a5e;
  --color-text-muted: #7a7a8e;
  --color-text-dim: #a0a0ae;

  /* Borders & Lines */
  --color-border: #e0ddd8;
  --color-border-bright: #d0cdc8;

  /* Gradients */
  --gradient-main: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid), var(--color-gradient-end));
  --gradient-text: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-mid), var(--color-gradient-end));
  --gradient-glow: linear-gradient(135deg, var(--color-primary-glow), var(--color-accent-glow), var(--color-secondary-glow));

  /* Functional */
  --color-error: #ef4444;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  /* Typography */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Monaco', 'Consolas', monospace;
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Container */
  --container-max: 1200px;
  --container-narrow: 800px;

  /* Effects */
  --glow-primary: 0 0 10px var(--color-primary-glow), 0 0 20px var(--color-primary-glow), 0 0 40px rgba(76, 201, 240, 0.05);
  --glow-secondary: 0 0 10px var(--color-secondary-glow), 0 0 20px var(--color-secondary-glow);
  --glow-text: 0 0 8px currentColor;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-indices */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
}

/* ── RESET & BASE ────────────────────────────────────────────────────────── */
*, *::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-mono);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle noise texture overlay for light mode */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.015;
  pointer-events: none;
  z-index: 9999;
}

/* ── TYPOGRAPHY ──────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
  font-size: 1.25rem;
}

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

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

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

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

code {
  background: var(--color-bg-surface);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  border: 1px solid var(--color-border);
}

pre {
  background: var(--color-bg-surface);
  padding: var(--space-lg);
  border-radius: 4px;
  border: 1px solid var(--color-border);
  overflow-x: auto;
}

/* ── LAYOUT ──────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

.section {
  padding: var(--space-4xl) 0;
}

.section--hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

/* ── HEADER / NAVIGATION ─────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-lg) 0;
  background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
  transition: background var(--transition-base);
}

.header.scrolled {
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo__icon {
  width: 32px;
  height: 32px;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
}

.nav__link::before {
  content: '>';
  position: absolute;
  left: -1em;
  opacity: 0;
  color: var(--color-primary);
  transition: all var(--transition-fast);
  transform: translateX(-4px);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.nav__link--active {
  color: var(--color-primary);
}

.nav__link--active::before {
  opacity: 1;
  transform: translateX(0);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  margin: 5px 0;
  transition: var(--transition-fast);
}

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

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--color-bg-elevated);
    flex-direction: column;
    justify-content: center;
    padding: var(--space-xl);
    border-left: 1px solid var(--color-border);
    transition: right var(--transition-base);
  }

  .nav.open {
    right: 0;
  }

  .nav__link {
    font-size: 1.25rem;
  }
}

/* ── BUTTONS ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn--primary {
  background: var(--gradient-main);
  color: white;
}

.btn--primary:hover {
  box-shadow: 0 4px 20px var(--color-primary-glow), 0 4px 20px var(--color-secondary-glow);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--discord {
  background: #5865F2;
  color: white;
}

.btn--discord:hover {
  background: #6b75f5;
  box-shadow: 0 4px 20px rgba(88, 101, 242, 0.3);
}

/* ── HERO SECTION ────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero__grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.2;
  pointer-events: none;
}

.hero__glow--1 {
  top: -200px;
  left: -100px;
  background: var(--color-primary);
}

.hero__glow--2 {
  bottom: -200px;
  right: -100px;
  background: var(--color-secondary);
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__logo {
  width: 160px;
  height: 160px;
  margin-bottom: var(--space-xl);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero__pretitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.hero__pretitle::before {
  content: '>';
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__title .highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: float-scroll 2s ease-in-out infinite;
}

@keyframes float-scroll {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

.hero__scroll-icon {
  width: 24px;
  height: 36px;
  border: 2px solid var(--color-text-muted);
  border-radius: 12px;
  position: relative;
}

.hero__scroll-icon::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scroll-dot 1.5s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%, 100% { opacity: 1; top: 6px; }
  50% { opacity: 0.5; top: 14px; }
}

/* ── TERMINAL BLOCK ──────────────────────────────────────────────────────── */
.terminal {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.terminal__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--red { background: #ff5f56; }
.terminal__dot--yellow { background: #ffbd2e; }
.terminal__dot--green { background: #27c93f; }

.terminal__title {
  flex: 1;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.terminal__body {
  padding: var(--space-lg);
  min-height: 200px;
}

.terminal__line {
  margin-bottom: var(--space-sm);
  display: flex;
  flex-wrap: wrap;
}

.terminal__prompt {
  color: var(--color-primary);
  margin-right: var(--space-sm);
}

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

.terminal__output {
  color: var(--color-text-secondary);
  margin-left: 0;
  display: block;
  width: 100%;
}

.terminal__cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--color-primary);
  animation: cursor-blink 1s step-end infinite;
  vertical-align: middle;
  margin-left: 2px;
}

@keyframes cursor-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ── CARDS ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: 8px 8px 0 0;
}

.card:hover {
  border-color: var(--color-border-bright);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  border-radius: 8px;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.card__link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.card:hover .card__link::after {
  transform: translateX(4px);
}

/* Project Card */
.project-card {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
  align-items: center;
  padding: var(--space-2xl);
}

.project-card__visual {
  position: relative;
  aspect-ratio: 16/10;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-secondary);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 4px;
}

.project-card__content {
  padding: var(--space-lg) 0;
}

.project-card__title {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.project-card__desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  line-height: 1.7;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.tag {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
}

.tag--highlight,
.tag--accent {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

@media (max-width: 900px) {
  .project-card {
    grid-template-columns: 1fr;
  }
}

/* ── FEATURES GRID ───────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

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

.feature:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
}

.feature__icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.feature__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.feature__text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── SECTION HEADERS ─────────────────────────────────────────────────────── */
.section-header {
  margin-bottom: var(--space-3xl);
}

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

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.section-label::before {
  content: '//';
  color: var(--color-text-muted);
}

.section-header--center .section-label {
  justify-content: center;
}

.section-header--center .section-label::after {
  content: '//';
  color: var(--color-text-muted);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-subtitle {
  color: var(--color-text-secondary);
  max-width: 600px;
  font-size: 1.1rem;
}

.section-header--center .section-subtitle {
  margin: 0 auto;
}

/* ── DEVLOG ──────────────────────────────────────────────────────────────── */
.devlog-grid {
  display: grid;
  gap: var(--space-lg);
}

.devlog-entry {
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: all var(--transition-base);
  text-decoration: none;
}

.devlog-entry:hover {
  border-color: var(--color-border-bright);
  transform: translateX(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.devlog-entry__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.devlog-entry__date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.devlog-entry__type {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  width: fit-content;
  border-radius: 4px;
}

.devlog-entry__type--post,
.devlog-entry__type--technical {
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.devlog-entry__type--video {
  background: var(--color-secondary-glow);
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
}

.devlog-entry__type--changelog,
.devlog-entry__type--update {
  background: var(--color-accent-glow);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.devlog-entry__content h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.devlog-entry__content p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .devlog-entry {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .devlog-entry__meta {
    flex-direction: row;
    align-items: center;
  }
}

/* Additional devlog entry styles for JS-generated content */
.devlog-entry__body {
  flex: 1;
}

.devlog-entry__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.devlog-entry__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.devlog-entry__excerpt {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.devlog-entry__video {
  position: relative;
  margin-bottom: var(--space-md);
  border-radius: 8px;
  overflow: hidden;
}

.devlog-entry__video img {
  width: 100%;
  height: auto;
  display: block;
}

.devlog-entry__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--transition-fast);
}

.devlog-entry__play svg {
  width: 32px;
  height: 32px;
}

.devlog-entry:hover .devlog-entry__play {
  background: var(--color-primary);
  transform: translate(-50%, -50%) scale(1.1);
}

/* ── NEWSLETTER ──────────────────────────────────────────────────────────── */
.newsletter {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-main);
}

.newsletter__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.newsletter__title {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.newsletter__text {
  color: var(--color-text-secondary);
  margin: 0;
}

.newsletter__form {
  display: flex;
  gap: var(--space-sm);
}

.newsletter__input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.newsletter__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.newsletter__input::placeholder {
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .newsletter__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .newsletter__form {
    flex-direction: column;
  }
}

/* Newsletter alternate class names (hyphenated) */
.newsletter-section {
  padding: var(--space-3xl) 0;
}

.newsletter-box {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

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

.newsletter-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.newsletter-text {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
}

.newsletter-input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.newsletter-input::placeholder {
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .newsletter-form {
    flex-direction: column;
  }
}

/* ── FOOTER ──────────────────────────────────────────────────────────────── */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-deep);
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__brand .logo {
  margin-bottom: var(--space-lg);
}

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

.footer__nav h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.footer__nav ul {
  list-style: none;
}

.footer__nav li {
  margin-bottom: var(--space-sm);
}

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

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

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

.footer__social {
  display: flex;
  gap: var(--space-md);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.footer__social a:hover {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.footer__social svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

@media (max-width: 900px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
  opacity: 0;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease forwards;
  opacity: 0;
}

/* Stagger delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* ── UTILITIES ───────────────────────────────────────────────────────────── */
.text-primary { color: var(--color-primary); }
.text-secondary-color { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-body-secondary { color: var(--color-text-secondary); }

.bg-elevated { background: var(--color-bg-elevated); }
.bg-surface { background: var(--color-bg-surface); }

.mt-0 { margin-top: 0; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-0 { margin-bottom: 0; }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

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

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

/* ── MATRIX RAIN EFFECT (Light version) ──────────────────────────────────── */
.matrix-rain {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.06;
  z-index: 0;
}

.matrix-column {
  position: absolute;
  top: -100%;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-primary);
  writing-mode: vertical-rl;
  text-orientation: upright;
  animation: matrix-fall linear infinite;
}

@keyframes matrix-fall {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(200vh); }
}

/* ── PLATFORMS ───────────────────────────────────────────────────────────── */
.platforms {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  margin-top: var(--space-lg);
}

.platform {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.platform svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ── DEVLOG FILTERS ──────────────────────────────────────────────────────── */
.devlog-filters {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.devlog-filter {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.devlog-filter:hover {
  border-color: var(--color-border-bright);
  color: var(--color-text-primary);
}

.devlog-filter.active {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ── PAPERS SECTION ──────────────────────────────────────────────────────── */
.papers-list {
  display: grid;
  gap: var(--space-md);
}

.paper-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  align-items: center;
  text-decoration: none;
  transition: all var(--transition-base);
}

.paper-item:hover {
  border-color: var(--color-border-bright);
  transform: translateX(4px);
}

.paper-item__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-primary);
  font-size: 1.25rem;
}

.paper-item__content h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.paper-item__content p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.paper-item__arrow {
  color: var(--color-text-muted);
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.paper-item:hover .paper-item__arrow {
  transform: translateX(4px);
  color: var(--color-primary);
}

/* ── LOADING STATES ──────────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-surface) 0%,
    var(--color-bg-hover) 50%,
    var(--color-bg-surface) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 4px;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── HERO SMALL ──────────────────────────────────────────────────────────── */
.hero--small {
  min-height: auto;
  padding-top: calc(80px + var(--space-4xl));
  padding-bottom: var(--space-3xl);
}

.hero__badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  color: var(--color-primary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

/* ── RESPONSIVE ADJUSTMENTS ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --space-3xl: 3rem;
    --space-4xl: 4rem;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* ── DEVLOG LIST ─────────────────────────────────────────────────────────── */
.devlog-list {
  display: grid;
  gap: var(--space-lg);
}

/* ── PAGINATION ──────────────────────────────────────────────────────────── */
.devlog-pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.devlog-pagination button {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.devlog-pagination button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.devlog-pagination button.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* ── PAPERS GRID ─────────────────────────────────────────────────────────── */
.papers-grid {
  display: grid;
  gap: var(--space-lg);
}

.paper-card {
  text-decoration: none;
  display: block;
}

.paper-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.paper-card__date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.paper-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.paper-card__desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.paper-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.paper-card__link svg {
  width: 16px;
  height: 16px;
}

.paper-card:hover .paper-card__link svg {
  transform: translateX(4px);
}

/* ── POST / ARTICLE STYLES ──────────────────────────────────────────────── */
.post {
  margin-bottom: var(--space-3xl);
}

.post__header {
  margin-bottom: var(--space-3xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.post__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.post__meta span:not(:last-child)::after {
  content: '·';
  margin-left: var(--space-md);
  color: var(--color-text-dim);
}

.post__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.post__excerpt {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.post__content {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text-primary);
}

.post__content h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.post__content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.post__content h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xs);
}

.post__content p {
  margin-bottom: var(--space-lg);
}

.post__content ul,
.post__content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.post__content li {
  margin-bottom: var(--space-sm);
}

.post__content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-surface);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--color-accent);
}

.post__content pre {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  white-space: pre;
  tab-size: 2;
}

.post__content pre code {
  background: none;
  padding: 0;
  font-size: 0.8rem;
  color: var(--color-text-primary);
  white-space: pre;
  text-decoration: none;
  border: none;
  border-radius: 0;
}

.post__content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

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

.post__content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post__content a:hover {
  color: var(--color-primary-bright);
}

.post__footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.post__footer .btn svg {
  width: 16px;
  height: 16px;
  margin-right: var(--space-sm);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

/* ── MERMAID DIAGRAMS ───────────────────────────────────────────────────── */
.mermaid-diagram {
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow-x: auto;
}

.mermaid-diagram svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.mermaid-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: var(--space-lg);
  color: #dc2626;
  font-size: 0.85rem;
}

/* ── TABLES ─────────────────────────────────────────────────────────────── */
.post__content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  font-size: 0.9rem;
}

.post__content table th,
.post__content table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border: 1px solid var(--color-border);
}

.post__content table th {
  background: var(--color-bg-surface);
  font-weight: 600;
  color: var(--color-text-primary);
}

.post__content table td {
  background: var(--color-bg-elevated);
}

.post__content table tr:hover td {
  background: var(--color-bg-hover);
}

/* Horizontal rule */
.post__content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-2xl) 0;
}