/* ===========================
   1. Root variables & reset
=========================== */
:root {
  --bg: #0F172A;
  --bg-alt: #0B1222;
  --card-bg: rgba(255, 255, 255, 0.08);
  --card-bg-hover: rgba(255, 255, 255, 0.12);
  --primary: #3B82F6;
  --secondary: #8B5CF6;
  --text: #F8FAFC;
  --muted: #94A3B8;
  --border: rgba(255, 255, 255, .12);

  --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
  --font-display: 'Poppins', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

::selection { background: var(--primary); color: #fff; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

/* ===========================
   2. Loader
=========================== */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 24px;
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
.loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-mark { display: flex; gap: 2px; font-size: 2.2rem; font-weight: 700; }
.loader-mark span {
  display: inline-block;
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: loaderBounce 1s ease-in-out infinite;
}
.loader-mark span:nth-child(2) { animation-delay: .15s; }
@keyframes loaderBounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.loader-bar { width: 160px; height: 3px; background: var(--border); border-radius: 10px; overflow: hidden; }
.loader-bar-fill { width: 0%; height: 100%; background: var(--gradient); animation: loaderFill 1.4s var(--ease) forwards; }
@keyframes loaderFill { to { width: 100%; } }

/* ===========================
   3. Cursor glow & scroll progress
=========================== */
.cursor-glow {
  position: fixed; top: 0; left: 0; width: 250px; height: 250px;
  border-radius: 50%; pointer-events: none; z-index: 2;
  background: radial-gradient(circle, rgba(59,130,246,.16), rgba(139,92,246,.08) 45%, transparent 72%);
  transform: translate3d(-50%, -50%, 0);
  will-change: transform, opacity;
  mix-blend-mode: screen;
  transition: opacity .4s ease;
  opacity: 0;
}
@media (hover: hover) { .cursor-glow.active { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .cursor-glow { display: none; } }

.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--gradient); z-index: 1001;
  transition: width .1s linear;
}

/* ===========================
   4. Navbar
=========================== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 20px 0;
  transition: padding .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  padding: 12px 0;
  background: rgba(15, 23, 42, .75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { font-size: 1.4rem; font-weight: 700; letter-spacing: -.02em; }
.logo span { color: var(--primary); }
.nav-links { display: flex; gap: 28px; flex: 1; justify-content: center; }
.nav-link {
  font-size: .92rem; color: var(--muted); position: relative; padding: 4px 0;
  transition: color .25s ease;
}
.nav-link::after {
  content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px;
  background: var(--gradient); transition: width .3s var(--ease);
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-cta { white-space: nowrap; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; width: 26px; }
.menu-toggle span { display: block; height: 2px; width: 100%; background: var(--text); border-radius: 2px; transition: transform .3s var(--ease), opacity .3s var(--ease); }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   5. Buttons
=========================== */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border-radius: 999px; font-weight: 600; font-size: .95rem;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.btn-sm { padding: 10px 20px; font-size: .85rem; }
.btn-primary {
  background: var(--gradient); color: #fff;
  box-shadow: 0 8px 24px -8px rgba(59, 130, 246, .6);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 30px -8px rgba(139, 92, 246, .55); }
.btn-outline { border: 1px solid var(--border); color: var(--text); background: rgba(255,255,255,.03); }
.btn-outline:hover { transform: translateY(-3px); border-color: var(--primary); background: rgba(59,130,246,.08); }

.ripple { position: relative; }
.ripple-circle {
  position: absolute; border-radius: 50%; background: rgba(255,255,255,.45);
  transform: scale(0); animation: rippleAnim .6s ease-out forwards; pointer-events: none;
}
@keyframes rippleAnim { to { transform: scale(3); opacity: 0; } }

/* ===========================
   6. Glass card
=========================== */
.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}

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

/* ===========================
   7. Hero
=========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 100px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.blob {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .35;
  animation: floatBlob 14s ease-in-out infinite;
}
.blob-1 { width: 420px; height: 420px; background: var(--primary); top: -100px; right: -60px; }
.blob-2 { width: 380px; height: 380px; background: var(--secondary); bottom: -80px; left: -60px; animation-delay: -6s; }
@keyframes floatBlob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -40px) scale(1.08); }
}
.grid-overlay {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
  opacity: .5;
}

.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.eyebrow { font-family: var(--font-mono); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); margin-bottom: 18px; }
.hero-title { font-size: clamp(2.2rem, 4.6vw, 3.6rem); font-weight: 700; letter-spacing: -.02em; line-height: 1.12; margin-bottom: 22px; }
.typing-wrap { color: var(--muted); font-weight: 500; font-size: .62em; display: inline-block; margin-top: 6px; }
#typingText { color: var(--text); font-weight: 600; }
.cursor-blink { color: var(--primary); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-desc { color: var(--muted); font-size: 1.05rem; max-width: 520px; margin-bottom: 34px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-meta { display: flex; gap: 36px; }
.hero-meta-item { display: flex; flex-direction: column; }
.hero-meta-item strong { font-size: 1.5rem; font-weight: 700; }
.hero-meta-item span { font-size: .82rem; color: var(--muted); }

.hero-visual { display: flex; justify-content: center; }
.hero-photo-frame { position: relative; width: 320px; height: 320px; }
.hero-photo {
  width: 100%; height: 100%; border-radius: 32px; overflow: hidden;
  border: 1px solid var(--border);
  background: linear-gradient(160deg, rgba(59,130,246,.25), rgba(139,92,246,.2));
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.6);
  animation: photoFloat 6s ease-in-out infinite;
}
@keyframes photoFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.orbit-dot { position: absolute; border-radius: 50%; background: var(--gradient); }
.orbit-1 { width: 14px; height: 14px; top: -6px; left: 20%; animation: orbitSpin 8s linear infinite; }
.orbit-2 { width: 10px; height: 10px; bottom: 10%; right: -8px; animation: orbitSpin 10s linear infinite reverse; }
.orbit-3 { width: 8px; height: 8px; bottom: -6px; left: 40%; animation: orbitSpin 12s linear infinite; }
@keyframes orbitSpin { from { transform: rotate(0deg) translateX(10px) rotate(0deg); } to { transform: rotate(360deg) translateX(10px) rotate(-360deg); } }
.floating-chip {
  position: absolute; padding: 8px 14px; border-radius: 999px; font-size: .78rem;
  background: rgba(15,23,42,.85); border: 1px solid var(--border); backdrop-filter: blur(10px);
  animation: chipFloat 5s ease-in-out infinite;
  white-space: nowrap;
}
.chip-1 { top: 10%; right: -14%; animation-delay: -1s; }
.chip-2 { bottom: 8%; left: -12%; animation-delay: -3s; }
@keyframes chipFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.scroll-cue { position: absolute; left: 50%; bottom: 32px; transform: translateX(-50%); z-index: 1; }
.scroll-cue span {
  display: block; width: 22px; height: 36px; border: 2px solid var(--border); border-radius: 14px; position: relative;
}
.scroll-cue span::before {
  content: ''; position: absolute; top: 6px; left: 50%; width: 4px; height: 8px; background: var(--primary);
  border-radius: 4px; transform: translateX(-50%); animation: scrollCue 1.8s ease infinite;
}
@keyframes scrollCue { 0% { opacity: 1; top: 6px; } 100% { opacity: 0; top: 18px; } }

/* ===========================
   8. Sections generic
=========================== */
.section { padding: 120px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-eyebrow { font-family: var(--font-mono); color: var(--primary); text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; margin-bottom: 12px; }
.section-title { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 700; letter-spacing: -.02em; margin-bottom: 56px; max-width: 640px; }

/* Reveal animations */
.reveal-up, .reveal-left, .reveal-right { opacity: 0; transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-up.in-view, .reveal-left.in-view, .reveal-right.in-view { opacity: 1; transform: translate(0, 0); }

/* ===========================
   9. About
=========================== */
.about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.about-grid .glass-card { padding: 32px; }
.about-grid h3 { font-size: 1.1rem; margin-bottom: 14px; }
.about-grid p, .about-list span { color: var(--muted); font-size: .95rem; }
.about-list li { display: flex; flex-direction: column; gap: 2px; margin-bottom: 14px; }
.about-list li:last-child { margin-bottom: 0; }
.about-list strong { font-size: .98rem; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  padding: 7px 14px; border-radius: 999px; font-size: .8rem; color: var(--text);
  background: rgba(59,130,246,.12); border: 1px solid rgba(59,130,246,.25);
}
.glass-card:hover { transform: translateY(-4px); background: var(--card-bg-hover); box-shadow: 0 16px 40px -20px rgba(0,0,0,.5); }

/* ===========================
   10. Skills
=========================== */
.skills-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.skill-item { text-align: center; }
.skill-ring { position: relative; width: 100px; height: 100px; margin: 0 auto 14px; }
.skill-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--border); stroke-width: 8; }
.ring-fill {
  fill: none; stroke: var(--primary); stroke-width: 8; stroke-linecap: round;
  stroke-dasharray: 264; stroke-dashoffset: 264;
  transition: stroke-dashoffset 1.4s var(--ease);
}
.skill-pct {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: .95rem;
}
.skill-name { color: var(--muted); font-size: .88rem; }

/* ===========================
   11. Services
=========================== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { padding: 36px 30px; }
.service-icon {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(59,130,246,.12); color: var(--primary);
  transition: transform .3s var(--ease), background .3s var(--ease);
}
.service-icon svg { width: 26px; height: 26px; }
.service-card:hover .service-icon { transform: rotate(-8deg) scale(1.08); background: var(--gradient); color: #fff; }
.service-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.service-card p { color: var(--muted); font-size: .92rem; }

/* ===========================
   12. Projects
=========================== */
.project-filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; margin-top: -24px; }
.filter-btn {
  padding: 10px 20px; border-radius: 999px; font-size: .86rem; font-weight: 500;
  border: 1px solid var(--border); color: var(--muted); background: rgba(255,255,255,.03);
  transition: color .3s ease, border-color .3s ease, background .3s var(--ease), transform .3s var(--ease);
}
.filter-btn:hover { color: var(--text); border-color: rgba(59,130,246,.4); transform: translateY(-2px); }
.filter-btn.active { color: #fff; background: var(--gradient); border-color: transparent; box-shadow: 0 8px 20px -8px rgba(59,130,246,.55); }

.projects-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  grid-auto-flow: dense;
}
.project-card {
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border);
  background: var(--card-bg); display: flex; flex-direction: column;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease), opacity .3s ease;
}
.project-card.is-hidden { display: none; }
.project-card-featured { grid-column: span 2; grid-row: span 2; }
.project-card-featured .project-img { aspect-ratio: 16/11; }
.project-card-featured h3 { font-size: 1.35rem; }
.project-card-featured p { font-size: .98rem; }

.project-card:hover { transform: translateY(-8px) scale(1.015); box-shadow: 0 30px 50px -20px rgba(59,130,246,.35); border-color: rgba(59,130,246,.4); }
.project-img { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.project-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease), filter .5s var(--ease); }
.project-card:hover .project-img img { transform: scale(1.08); filter: saturate(1.15); }

.project-overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 14px;
  background: linear-gradient(180deg, rgba(15,23,42,.15), rgba(15,23,42,.75));
  opacity: 0; transition: opacity .35s var(--ease);
}
.project-card:hover .project-overlay { opacity: 1; }
.icon-btn {
  width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: rgba(248,250,252,.12); border: 1px solid rgba(248,250,252,.3); color: #fff;
  backdrop-filter: blur(6px);
  transform: translateY(14px); opacity: 0;
  transition: transform .4s var(--ease), opacity .4s var(--ease), background .3s ease;
}
.project-card:hover .icon-btn { transform: translateY(0); opacity: 1; }
.project-card:hover .icon-btn:nth-child(2) { transition-delay: .06s; }
.icon-btn:hover { background: var(--gradient); border-color: transparent; }
.icon-btn svg { width: 20px; height: 20px; }

.project-body { padding: 24px; display: flex; flex-direction: column; flex: 1; position: relative; }
.project-index {
  font-family: var(--font-mono); font-size: .78rem; color: var(--primary); opacity: .8; margin-bottom: 6px;
}
.project-body h3 { font-size: 1.08rem; margin-bottom: 8px; }
.project-body p { color: var(--muted); font-size: .9rem; margin-bottom: 16px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; margin-top: auto; }
.tag-row .tag { padding: 5px 11px; font-size: .74rem; }
.project-links { display: flex; gap: 12px; }
.link-btn {
  flex: 1; text-align: center; padding: 10px 14px; border-radius: 10px; font-size: .84rem; font-weight: 600;
  background: var(--gradient); color: #fff; transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.link-btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.link-btn:hover { transform: translateY(-2px); box-shadow: 0 10px 20px -8px rgba(59,130,246,.5); }

/* ===========================
   13. Timeline
=========================== */
.timeline { position: relative; max-width: 720px; margin: 0 auto; }
.timeline-line { position: absolute; left: 20px; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-line-fill { width: 100%; height: 0%; background: var(--gradient); transition: height 1s var(--ease); box-shadow: 0 0 12px var(--primary); }
.timeline-item { position: relative; padding-left: 60px; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute; left: 12px; top: 6px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--primary); z-index: 1;
  box-shadow: 0 0 0 6px rgba(59,130,246,.12);
}
.timeline-content { padding: 22px 26px; }
.timeline-date { font-family: var(--font-mono); font-size: .78rem; color: var(--primary); }
.timeline-content h3 { margin: 8px 0 8px; font-size: 1.05rem; }
.timeline-content p { color: var(--muted); font-size: .92rem; }

/* ===========================
   14. Stats
=========================== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item { padding: 20px; }
.stat-number { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-suffix { font-size: 1.6rem; font-weight: 800; color: var(--secondary); }
.stat-item p { color: var(--muted); margin-top: 8px; font-size: .9rem; }

/* ===========================
   15. Testimonials
=========================== */
.testimonial-slider { max-width: 700px; margin: 0 auto; overflow: hidden; }
.testimonial-track { display: flex; transition: transform .5s var(--ease); }
.testimonial-card {
  min-width: 100%; padding: 40px; text-align: center;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.testimonial-card p { font-size: 1.1rem; font-style: italic; margin-bottom: 24px; }
.testimonial-author strong { display: block; font-size: 1rem; }
.testimonial-author span { color: var(--muted); font-size: .85rem; }
.testimonial-dots { display: flex; justify-content: center; gap: 10px; margin-top: 24px; }
.testimonial-dots button {
  width: 9px; height: 9px; border-radius: 50%; background: var(--border); transition: background .3s ease, transform .3s ease;
}
.testimonial-dots button.active { background: var(--primary); transform: scale(1.3); }

/* ===========================
   16. Gallery
=========================== */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery-item { position: relative; border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 1/1; cursor: pointer; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease), filter .5s var(--ease); }
.gallery-item::after {
  content: '+'; position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff; background: rgba(15,23,42,.55); backdrop-filter: blur(4px);
  opacity: 0; transition: opacity .35s ease;
}
.gallery-item:hover img { transform: scale(1.12); filter: blur(1px); }
.gallery-item:hover::after { opacity: 1; }

/* ===========================
   17. Articles
=========================== */
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card { padding: 28px; border-radius: var(--radius-md); transition: all .35s var(--ease); }
.article-card:hover { transform: translateY(-4px); background: var(--card-bg-hover); }
.article-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.article-excerpt { font-size: .95rem; color: var(--muted); margin-bottom: 18px; line-height: 1.6; }
.article-meta { display: flex; justify-content: space-between; align-items: center; }
.article-date { font-size: .85rem; color: var(--muted); }
.article-link { font-size: .95rem; color: var(--primary); font-weight: 500; transition: color .3s ease; }
.article-link:hover { color: var(--secondary); }

@media (max-width: 768px) {
  .articles-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.lightbox {
  position: fixed; inset: 0; background: rgba(2,6,20,.92); z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img { max-width: 88vw; max-height: 84vh; border-radius: 14px; box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.lightbox-close {
  position: absolute; top: 28px; right: 32px; font-size: 2rem; color: #fff; line-height: 1;
  width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.1);
  transition: background .3s ease, transform .3s ease;
}
.lightbox-close:hover { background: rgba(255,255,255,.2); transform: rotate(90deg); }

/* ===========================
   17. Contact
=========================== */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: start; }
.contact-form { padding: 36px; display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field label { font-size: .84rem; color: var(--muted); }
.form-field input, .form-field textarea {
  background: rgba(255,255,255,.04); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; color: var(--text); font-size: .92rem; resize: vertical;
  transition: border-color .3s ease, background .3s ease, box-shadow .3s ease;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--primary); background: rgba(59,130,246,.06);
  box-shadow: 0 0 0 4px rgba(59,130,246,.15);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: #64748B; }
.form-status { font-size: .85rem; color: var(--secondary); min-height: 1.2em; }

.contact-info-card { padding: 32px; }
.contact-info-card h3 { margin-bottom: 20px; font-size: 1.1rem; }
.contact-list { display: flex; flex-direction: column; gap: 18px; margin-bottom: 28px; }
.contact-list li { display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: .92rem; }
.contact-list svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--primary); }
.social-icons { display: flex; gap: 12px; }
.social-icon {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  transition: transform .3s var(--ease), background .3s ease, color .3s ease;
}
.social-icon svg { width: 18px; height: 18px; }
.social-icon:hover { transform: translateY(-4px); background: var(--gradient); }

/* ===========================
   18. Footer
=========================== */
.footer { border-top: 1px solid var(--border); padding: 36px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--muted); font-size: .9rem; transition: color .25s ease; }
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--muted); font-size: .84rem; }

.back-to-top {
  position: fixed; bottom: 28px; right: 28px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--gradient); display: flex; align-items: center; justify-content: center; z-index: 900;
  box-shadow: 0 10px 24px -8px rgba(59,130,246,.6);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top svg { width: 20px; height: 20px; color: #fff; }
.back-to-top:hover { transform: translateY(-4px); }