/* ==========================================================================
   ABDU-XX PORTFOLIO — 2026 EDITION
   Design: Clean dark, indigo accent, premium developer aesthetic
   ========================================================================== */

/* --------------------------------------------------------------------------
   FONTS
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
/* Satoshi via CDN alternative — we'll use a clean system fallback stack */

/* --------------------------------------------------------------------------
   CSS CUSTOM PROPERTIES
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --bg:        #0b0b0f;
  --bg-2:      #0f0f14;
  --card:      #15151c;
  --card-2:    #1a1a24;
  --border:    rgba(255, 255, 255, 0.07);
  --border-2:  rgba(255, 255, 255, 0.12);
  --text:      #f5f5f7;
  --text-2:    #d1d1d6;
  --muted:     #9a9aa3;
  --muted-2:   #6b6b76;
  --accent:    #6366f1;
  --accent-2:  #818cf8;
  --accent-3:  #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.18);
  --accent-glow-sm: rgba(99, 102, 241, 0.10);
  --success:   #34d399;
  --warning:   #fbbf24;

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

  /* Spacing */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  5rem;

  /* Layout */
  --container:  1200px;
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.6);
  --shadow-accent: 0 8px 32px rgba(99, 102, 241, 0.25);

  /* Transitions */
  --ease:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --duration-fast: 150ms;
  --duration-med:  250ms;
  --duration-slow: 400ms;
}

/* --------------------------------------------------------------------------
   RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
}

/* --------------------------------------------------------------------------
   LAYOUT UTILITIES
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 640px) {
  .container { padding: 0 2rem; }
}

@media (min-width: 1024px) {
  .container { padding: 0 3rem; }
}

/* --------------------------------------------------------------------------
   NAVIGATION
   -------------------------------------------------------------------------- */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(11, 11, 15, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--duration-med) var(--ease);
}

.nav-wrapper.scrolled {
  background: rgba(11, 11, 15, 0.95);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: opacity var(--duration-fast);
}

.nav-logo:hover { opacity: 0.8; }

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--duration-fast), background var(--duration-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.nav-link.active {
  color: var(--text);
  background: rgba(99, 102, 241, 0.12);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
}

.nav-cta {
  display: none;
  padding: 0.5rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  transition: background var(--duration-fast), transform var(--duration-fast), box-shadow var(--duration-fast);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

@media (min-width: 640px) {
  .nav-cta { display: inline-flex; align-items: center; gap: 0.4rem; }
}

/* Mobile hamburger */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast);
}

.mobile-menu-btn:hover { background: rgba(255,255,255,0.06); }

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--muted);
  border-radius: 2px;
  transition: transform var(--duration-med) var(--ease), opacity var(--duration-fast);
  transform-origin: center;
}

.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
}

/* Mobile nav drawer */
@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(320px, 85vw);
    height: 100dvh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    background: var(--card);
    border-left: 1px solid var(--border);
    padding: 5rem 1.5rem 2rem;
    transition: right var(--duration-slow) var(--ease);
    z-index: 99;
    overflow-y: auto;
  }

  .nav-menu.open { right: 0; }

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
}

/* Nav overlay for mobile */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 98;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.nav-overlay.visible { display: block; }

/* --------------------------------------------------------------------------
   SCROLL REVEAL
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

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

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.section-label::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--accent-2);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
}

.section-title span {
  color: var(--accent);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--muted);
  margin-top: 0.75rem;
  max-width: 480px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--duration-med) var(--ease);
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 var(--accent-glow);
}

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

.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-2);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.09);
  border-color: var(--border-2);
  color: var(--text);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   HERO — INDEX PAGE
   -------------------------------------------------------------------------- */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

/* Status pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem 0.35rem 0.6rem;
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--success);
  margin-bottom: 1.75rem;
  width: fit-content;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
  50%       { box-shadow: 0 0 0 5px rgba(52, 211, 153, 0); }
}

.hero-heading {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 1.25rem;
  color: var(--text);
}

.hero-heading .line-accent {
  color: var(--accent);
  position: relative;
  display: inline-block;
}

.hero-heading .line-accent::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
  opacity: 0.6;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero-stat-item {}

.hero-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.2rem;
}

.hero-stat-num span {
  color: var(--accent);
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--muted);
}

/* Hero visual card */
.hero-visual {
  position: relative;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  position: relative;
}

.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  transition: opacity var(--duration-med);
}

.hero-card:hover img { opacity: 1; }

.hero-card-badge {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  background: rgba(11, 11, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.hero-card-badge-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.hero-card-badge-sub {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 1px;
}

.hero-card-badge-icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  color: white;
  font-size: 1rem;
}

/* Floating decorative elements */
.hero-decoration {
  position: absolute;
  pointer-events: none;
}

.hero-decoration-1 {
  top: -1.5rem;
  right: -1.5rem;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
}

.hero-decoration-2 {
  bottom: -1rem;
  left: -1rem;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.15), transparent 70%);
  border-radius: 50%;
  filter: blur(15px);
}

/* --------------------------------------------------------------------------
   ABOUT SECTION
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

@media (min-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
  }
}

.about-body p {
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.about-body p:last-child { margin-bottom: 0; }

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 0.75rem;
}

.skill-chip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.5rem;
  text-align: center;
  transition: border-color var(--duration-fast), transform var(--duration-fast), background var(--duration-fast);
  cursor: default;
}

.skill-chip:hover {
  border-color: var(--accent);
  background: var(--card-2);
  transform: translateY(-2px);
}

.skill-chip-icon {
  font-size: 1.4rem;
  margin-bottom: 0.35rem;
  display: block;
}

.skill-chip-name {
  font-size: 0.7rem;
  color: var(--muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   FEATURED PROJECTS (HOME)
   -------------------------------------------------------------------------- */
.featured-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Project card */
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--duration-med), transform var(--duration-med) var(--ease), box-shadow var(--duration-med);
  color: inherit;
  text-decoration: none;
}

.project-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(99, 102, 241, 0.1);
}

.project-card-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-2);
  position: relative;
}

.project-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease), opacity var(--duration-med);
}

.project-card:hover .project-card-img img {
  transform: scale(1.04);
}

.project-card-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(21, 21, 28, 0.6) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-med);
}

.project-card:hover .project-card-img-overlay { opacity: 1; }

.project-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-category {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  background: rgba(99, 102, 241, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.project-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.3;
}

.project-card-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.project-tag {
  font-size: 0.7rem;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

.project-card-arrow {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: var(--accent-2);
  font-weight: 500;
  transition: gap var(--duration-fast);
}

.project-card:hover .project-card-arrow { gap: 0.55rem; }

/* --------------------------------------------------------------------------
   SERVICES / WHAT I DO
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .services-grid { grid-template-columns: repeat(4, 1fr); } }

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  transition: border-color var(--duration-med), transform var(--duration-med) var(--ease);
}

.service-card:hover {
  border-color: rgba(99, 102, 241, 0.35);
  transform: translateY(-3px);
}

.service-icon-wrap {
  width: 44px;
  height: 44px;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  color: var(--accent-2);
  font-size: 1.1rem;
  transition: background var(--duration-fast);
}

.service-card:hover .service-icon-wrap {
  background: rgba(99, 102, 241, 0.2);
}

.service-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.service-desc {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   STATS METRICS ROW
   -------------------------------------------------------------------------- */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 3rem 0;
}

@media (min-width: 768px) { .metrics-row { grid-template-columns: repeat(4, 1fr); } }

.metric-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity var(--duration-med);
}

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

.metric-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.6rem;
}

.metric-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.metric-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.7rem;
  color: var(--success);
  background: rgba(52, 211, 153, 0.08);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

.footer-social {
  display: flex;
  gap: 0.5rem;
}

.footer-social-link {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  transition: all var(--duration-fast);
}

.footer-social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--muted-2);
}

/* --------------------------------------------------------------------------
   PAGE HEADER (inner pages)
   -------------------------------------------------------------------------- */
.page-hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.page-hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.page-hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.page-hero-title span { color: var(--accent); }

.page-hero-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 520px;
}

/* --------------------------------------------------------------------------
   PROJECTS PAGE
   -------------------------------------------------------------------------- */
/* Filter tabs */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.45rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  transition: all var(--duration-fast);
}

.filter-btn:hover {
  background: rgba(255,255,255,0.07);
  color: var(--text);
  border-color: var(--border-2);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* All projects grid */
.all-projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 600px) { .all-projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .all-projects-grid { grid-template-columns: repeat(3, 1fr); } }

/* Card hidden state for filtering */
.project-card.hidden {
  display: none;
}

/* --------------------------------------------------------------------------
   PROJECT DETAIL PAGE
   -------------------------------------------------------------------------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
  padding: 0.4rem 0;
  transition: color var(--duration-fast);
  margin-bottom: 2rem;
}

.back-link:hover { color: var(--text); }
.back-link svg { transition: transform var(--duration-fast); }
.back-link:hover svg { transform: translateX(-3px); }

.project-detail-hero {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 16 / 6;
  background: var(--card);
  margin-bottom: 2.5rem;
}

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

.project-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 900px) {
  .project-detail-layout {
    grid-template-columns: 1fr 320px;
    gap: 4rem;
  }
}

.project-detail-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.project-detail-section {
  margin-bottom: 2.5rem;
}

.project-detail-section h3 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-2);
  margin-bottom: 0.75rem;
}

.project-detail-section p {
  color: var(--text-2);
  line-height: 1.75;
  font-size: 0.95rem;
}

.project-detail-section ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-detail-section li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-2);
}

.project-detail-section li::before {
  content: '→';
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 1px;
}

/* Sidebar */
.project-detail-sidebar {}

.sidebar-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.sidebar-card-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1rem;
}

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

.tech-tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  color: var(--accent-2);
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.9rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--duration-fast);
}

.sidebar-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateX(2px);
}

/* Project nav (prev/next) */
.project-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding-top: 3rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
}

.project-nav-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  text-decoration: none;
  color: inherit;
  transition: all var(--duration-med) var(--ease);
}

.project-nav-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--card-2);
  transform: translateY(-2px);
}

.project-nav-item.next { text-align: right; }

.project-nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.project-nav-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

/* --------------------------------------------------------------------------
   CONTACT PAGE
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr 420px;
    gap: 4rem;
    align-items: start;
  }
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 0.9rem;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--muted-2);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow-sm);
}

.form-input.error,
.form-textarea.error {
  border-color: #f87171;
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
  font-family: inherit;
}

.form-error {
  font-size: 0.75rem;
  color: #f87171;
  display: none;
}

.form-error.visible { display: block; }

.form-submit {
  width: 100%;
  padding: 0.9rem;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 700;
  transition: all var(--duration-fast);
  position: relative;
  overflow: hidden;
}

.form-submit:hover {
  background: var(--accent-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

.form-submit:active { transform: translateY(0); }

.form-submit.loading {
  pointer-events: none;
  opacity: 0.7;
}

.form-success {
  display: none;
  padding: 1rem;
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
  border-radius: var(--radius-md);
  color: var(--success);
  font-size: 0.875rem;
  text-align: center;
}

.form-success.visible { display: block; }

/* Contact info sidebar */
.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-info-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
  transition: all var(--duration-fast);
}

.contact-info-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  background: var(--card-2);
  transform: translateX(3px);
}

.contact-info-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 1rem;
  flex-shrink: 0;
  color: var(--accent-2);
  background: rgba(99, 102, 241, 0.1);
}

.contact-info-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.contact-info-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.contact-availability {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-top: 0.25rem;
}

.contact-availability-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.contact-availability-status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--success);
}

/* --------------------------------------------------------------------------
   BACK TO TOP
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--duration-med) var(--ease);
  z-index: 50;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   ACCESSIBILITY
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 1000;
  transition: top var(--duration-fast);
}

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

/* --------------------------------------------------------------------------
   DIVIDER
   -------------------------------------------------------------------------- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* --------------------------------------------------------------------------
   RESPONSIVE TWEAKS
   -------------------------------------------------------------------------- */
@media (max-width: 639px) {
  .hero-stats { gap: 1.5rem; }
  .hero-stat-num { font-size: 1.3rem; }
  .section { padding: 3rem 0; }
  .page-hero { padding: 2.5rem 0 2rem; }
  .project-nav { grid-template-columns: 1fr; }
  .project-nav-item.next { text-align: left; }
  .metrics-row { grid-template-columns: repeat(2, 1fr); }
}