/* ═══════════════════════════════════════════════════════════
   Daniel Ruiz — Personal Portfolio
   Design System & Styles
   ═══════════════════════════════════════════════════════════ */

/* ── Google Font Import ────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Colors — Deep Space palette */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);

  /* Text */
  --text-primary: #f0f0f5;
  --text-secondary: rgba(240, 240, 245, 0.6);
  --text-tertiary: rgba(240, 240, 245, 0.35);
  --text-accent: #7c6ef0;

  /* Accent Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
  --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
  --gradient-hero: linear-gradient(135deg, 
    #0a0a0f 0%, 
    #1a1035 25%, 
    #0f1729 50%, 
    #1a0f2e 75%, 
    #0a0a0f 100%);
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(99, 102, 241, 0.06), transparent 40%);

  /* Accent */
  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  /* Spacing */
  --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;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-card: 0 0 0 1px var(--border-glass), 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 0 0 1px var(--border-glass-hover), 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.15);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.5);
}

/* ── Layout ────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

section {
  position: relative;
  z-index: 1;
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-lg) 0;
  transition: var(--transition-base);
  background: transparent;
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-glass);
  padding: var(--space-md) 0;
}

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

.nav-logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 200;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 6px 0;
  transition: var(--transition-base);
  border-radius: var(--radius-full);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ── Hero Section ──────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: -2;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 10% 80%, rgba(6, 182, 212, 0.06), transparent);
}

/* Animated grid */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: 
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black, transparent);
  animation: gridFloat 20s linear infinite;
}

@keyframes gridFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(60px); }
}

/* Floating orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 12s ease-in-out infinite;
  z-index: -1;
}

.hero-orb--1 {
  width: 400px;
  height: 400px;
  background: rgba(99, 102, 241, 0.12);
  top: 10%;
  right: -5%;
  animation-delay: 0s;
}

.hero-orb--2 {
  width: 300px;
  height: 300px;
  background: rgba(139, 92, 246, 0.1);
  bottom: 10%;
  left: -5%;
  animation-delay: -4s;
}

.hero-orb--3 {
  width: 200px;
  height: 200px;
  background: rgba(6, 182, 212, 0.08);
  top: 40%;
  left: 40%;
  animation-delay: -8s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--accent-emerald);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.hero h1 .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 550px;
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* Hero scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-tertiary);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-indigo), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ── Section Header ────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-indigo);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  display: block;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.section-desc {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
  font-size: 1rem;
}

/* ── About Section ─────────────────────────────────────────── */
.about {
  padding: var(--space-4xl) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.about-avatar {
  position: relative;
}

.about-avatar img {
  width: 100%;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
}

.about-avatar::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-xl) + 2px);
  background: var(--gradient-primary);
  z-index: -1;
  opacity: 0.4;
  filter: blur(8px);
}

.about-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.01em;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.stat {
  text-align: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.stat:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
  display: block;
}

/* ── Skills Section ────────────────────────────────────────── */
.skills {
  padding: var(--space-4xl) 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.skill-category {
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-base);
}

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

.skill-category:hover::before {
  opacity: 1;
}

.skill-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
}

.skill-icon--backend { background: rgba(99, 102, 241, 0.1); }
.skill-icon--frontend { background: rgba(6, 182, 212, 0.1); }
.skill-icon--mobile { background: rgba(139, 92, 246, 0.1); }
.skill-icon--architecture { background: rgba(16, 185, 129, 0.1); }

.skill-category h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.skill-category p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  padding: 0.3rem 0.75rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  font-family: var(--font-mono);
}

.skill-tag:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.2);
  color: var(--text-primary);
}

/* ── Projects Section ──────────────────────────────────────── */
.projects {
  padding: var(--space-4xl) 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--card-mouse-x, 50%) var(--card-mouse-y, 50%),
    rgba(99, 102, 241, 0.06), transparent 40%);
  opacity: 0;
  transition: var(--transition-base);
  pointer-events: none;
}

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

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

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.project-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

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

.project-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: var(--transition-fast);
  background: transparent;
}

.project-link:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.project-link svg {
  width: 18px;
  height: 18px;
}

.project-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-lg);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: auto;
}

.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-indigo);
  padding: 0.2rem 0.6rem;
  background: rgba(99, 102, 241, 0.08);
  border-radius: var(--radius-full);
}
/* ── Published Apps Sub-section ────────────────────────────── */
.apps-subsection {
  margin-top: var(--space-4xl);
  padding-top: var(--space-4xl);
  border-top: 1px solid var(--border-glass);
}

.apps-subsection-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.apps-subsection-title {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.app-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-emerald), var(--accent-cyan));
  opacity: 0;
  transition: var(--transition-base);
}

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

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

.app-card-inner {
  padding: var(--space-2xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
}

.app-icon-wrapper {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-icon {
  font-size: 1.6rem;
}

.app-info {
  flex: 1;
  min-width: 0;
}

.app-info h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
  transition: var(--transition-fast);
}

.app-card:hover .app-info h4 {
  color: var(--accent-emerald);
}

.app-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.65;
  margin-bottom: var(--space-md);
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.app-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-emerald);
  padding: 0.2rem 0.55rem;
  background: rgba(16, 185, 129, 0.08);
  border-radius: var(--radius-full);
}

.app-badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-tertiary);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.app-card:hover .app-badge {
  color: var(--accent-emerald);
}

.apps-footer {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* ── Blog Section ──────────────────────────────────────────── */
.blog {
  padding: var(--space-4xl) 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.blog-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.blog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-base);
}

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

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

.blog-card-inner {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.blog-meta time {
  color: var(--accent-indigo);
  font-weight: 500;
}

.blog-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
  line-height: 1.4;
  transition: var(--transition-fast);
}

.blog-card:hover h3 {
  color: var(--accent-violet);
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-lg);
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.blog-tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  padding: 0.2rem 0.6rem;
  background: rgba(6, 182, 212, 0.08);
  border-radius: var(--radius-full);
}

.blog-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-tertiary);
  transition: var(--transition-fast);
  margin-top: auto;
}

.blog-card:hover .blog-cta {
  color: var(--accent-indigo);
}

.blog-cta svg {
  transition: var(--transition-fast);
}

.blog-card:hover .blog-cta svg {
  transform: translate(2px, -2px);
}

.blog-footer {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* ── Contact Section ───────────────────────────────────────── */
.contact {
  padding: var(--space-4xl) 0;
}

.contact-wrapper {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-wrapper h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.contact-wrapper p {
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  font-size: 1.05rem;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.contact-link:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
}

.contact-link svg {
  width: 18px;
  height: 18px;
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border-glass);
  position: relative;
  z-index: 1;
}

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

.footer-text {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.footer-text span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

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

.footer-socials a {
  color: var(--text-tertiary);
  transition: var(--transition-fast);
}

.footer-socials a:hover {
  color: var(--text-primary);
}

.footer-socials svg {
  width: 18px;
  height: 18px;
}

/* ── Animations (Intersection Observer) ────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: block;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about-avatar {
    max-width: 200px;
    margin: 0 auto;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

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

  .app-card-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .app-badge {
    align-self: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

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

@media (max-width: 480px) {
  .about-stats {
    grid-template-columns: 1fr;
  }
}

/* ── Particle canvas ───────────────────────────────────────── */
#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Section divider ───────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-glass), transparent);
  margin: 0;
}

/* ── Language Switcher ─────────────────────────────────────── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: var(--space-xl);
  border-left: 1px solid var(--border-glass);
  padding-left: var(--space-md);
}

.lang-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-toggle-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.lang-toggle-btn.active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
  font-weight: 700;
}

@media (max-width: 768px) {
  .lang-switcher {
    margin-left: 0;
    border-left: none;
    padding-left: 0;
    margin-top: var(--space-md);
    justify-content: center;
  }
}