/* ============================================================
   style.css — Network Specialist Portfolio
   Dark cyberpunk / terminal aesthetic
   Author: Alex Kaya
   ============================================================ */

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

:root {
  /* Colors */
  --clr-bg:        #090d13;
  --clr-bg-2:      #0d1421;
  --clr-bg-3:      #111827;
  --clr-card:      rgba(17, 28, 45, 0.75);
  --clr-border:    rgba(0, 212, 255, 0.12);
  --clr-border-h:  rgba(0, 212, 255, 0.4);

  --clr-cyan:      #00d4ff;
  --clr-cyan-dim:  rgba(0, 212, 255, 0.15);
  --clr-cyan-dark: #007a94;

  --clr-text:      #c8d8e8;
  --clr-text-dim:  #5a7080;
  --clr-text-hi:   #eaf4ff;
  --clr-white:     #ffffff;

  --clr-success:   #00ff88;
  --clr-error:     #ff4466;
  --clr-warning:   #ffaa00;

  /* Typography */
  --font-mono:     'Share Tech Mono', monospace;
  --font-display:  'Rajdhani', sans-serif;
  --font-body:     'Inter', sans-serif;

  /* Spacing */
  --gap:           1.5rem;
  --section-pad:   6rem;
  --container-w:   1200px;

  /* Effects */
  --radius:        12px;
  --radius-sm:     8px;
  --radius-lg:     20px;
  --shadow:        0 8px 32px rgba(0, 212, 255, 0.06);
  --shadow-h:      0 16px 64px rgba(0, 212, 255, 0.14);
  --glow:          0 0 20px rgba(0, 212, 255, 0.3);

  /* Transitions */
  --ease:          cubic-bezier(0.23, 1, 0.32, 1);
  --dur:           0.35s;
}

html { scroll-behavior: smooth; }

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

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-cyan-dark); border-radius: 4px; }

/* Selection */
::selection { background: rgba(0, 212, 255, 0.25); color: var(--clr-white); }

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

.accent { color: var(--clr-cyan); }

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

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

/* ── PRELOADER ─────────────────────────────────────────────── */
.preloader {
  position: fixed; inset: 0;
  background: var(--clr-bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s var(--ease), visibility 0.5s;
}

.preloader.hidden { opacity: 0; visibility: hidden; }

.preloader__inner { text-align: center; position: relative; }

.preloader__ring {
  width: 60px; height: 60px;
  border: 2px solid var(--clr-border);
  border-top-color: var(--clr-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1rem;
}

.preloader__text {
  font-family: var(--font-mono);
  color: var(--clr-cyan);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  animation: blink 1s step-end infinite;
}

/* ── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: none;
  transition: all var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--clr-cyan);
  color: var(--clr-bg);
}

.btn--primary::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--dur);
}

.btn--primary:hover::after { opacity: 1; }
.btn--primary:hover { box-shadow: var(--glow); transform: translateY(-2px); }

.btn--outline {
  background: transparent;
  color: var(--clr-cyan);
  border: 1px solid var(--clr-cyan);
}

.btn--outline:hover {
  background: var(--clr-cyan-dim);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

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

/* ── SECTION COMMON ─────────────────────────────────────────── */
.section { padding: var(--section-pad) 0; }

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--clr-cyan);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--clr-text-hi);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px; left: 50%; transform: translateX(-50%);
  width: 48px; height: 2px;
  background: var(--clr-cyan);
  border-radius: 2px;
}

/* Fade-in animation for sections */
.section { opacity: 0; transform: translateY(30px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.section.visible { opacity: 1; transform: translateY(0); }

/* ── NAVBAR ─────────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 2rem;
  background: rgba(9, 13, 19, 0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur), padding var(--dur), background var(--dur);
}

.navbar.scrolled {
  border-bottom-color: var(--clr-border);
  background: rgba(9, 13, 19, 0.95);
  padding: 0.85rem 2rem;
}

.navbar__logo {
  display: flex; align-items: center; gap: 0.6rem;
  text-decoration: none;
  user-select: none;
}

.navbar__logo-img {
  width: 36px; height: 36px;
  object-fit: contain;
  border-radius: 6px;
  filter: drop-shadow(0 0 6px rgba(0,212,255,0.5));
  transition: filter var(--dur);
}

.navbar__logo:hover .navbar__logo-img {
  filter: drop-shadow(0 0 12px rgba(0,212,255,0.9));
}

.navbar__logo-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text-hi);
  letter-spacing: 0.04em;
}

.logo-bracket { color: var(--clr-cyan); }

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

.nav-link {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--clr-text-dim);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: color var(--dur), background var(--dur);
}

.nav-link:hover,
.nav-link.active {
  color: var(--clr-cyan);
  background: var(--clr-cyan-dim);
}

.navbar__burger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none;
  cursor: pointer; padding: 4px;
}

.navbar__burger span {
  width: 24px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--dur) var(--ease);
  display: block;
}

.navbar__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__burger.open span:nth-child(2) { opacity: 0; }
.navbar__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
  opacity: 1 !important; /* override section fade — hero is always visible */
  transform: none !important;
}

.hero__canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0.35;
  pointer-events: none;
}

/* Gradient overlay */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(0,212,255,0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 10% 80%, rgba(0,100,150,0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative; z-index: 1;
  max-width: 600px;
  animation: heroFadeUp 0.9s var(--ease) 0.5s both;
}

.hero__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--clr-cyan);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  display: flex; align-items: center; gap: 0.4rem;
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 700;
  color: var(--clr-text-hi);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 500;
  color: var(--clr-text-dim);
  margin-bottom: 1.5rem;
  letter-spacing: 0.03em;
}

.hero__desc {
  font-size: 1rem;
  color: var(--clr-text);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero__actions {
  display: flex; flex-wrap: wrap; gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero__badges {
  display: flex; flex-wrap: wrap; gap: 0.75rem;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--clr-text-dim);
  background: rgba(0,212,255,0.06);
  border: 1px solid var(--clr-border);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  display: flex; align-items: center; gap: 0.45rem;
}

.status-online { color: var(--clr-success); animation: blink 2s step-end infinite; }

/* Hero photo */
.hero__photo-wrap {
  position: absolute;
  right: 8%;
  top: 50%; transform: translateY(-50%);
  width: clamp(220px, 25vw, 340px);
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  animation: heroFadeUp 0.9s var(--ease) 0.7s both;
}

.hero__photo-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid var(--clr-cyan);
}

.ring--outer {
  inset: 0;
  opacity: 0.2;
  animation: spinSlow 20s linear infinite;
  border-style: dashed;
}

.ring--inner {
  inset: 16px;
  opacity: 0.12;
  animation: spinSlow 12s linear infinite reverse;
}

.hero__photo {
  width: 80%; aspect-ratio: 1;
  border-radius: 50%;
  background: var(--clr-card);
  border: 2px solid var(--clr-border-h);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 60px rgba(0,212,255,0.12), inset 0 0 30px rgba(0,212,255,0.04);
}

/* Logo variant — no overflow clip, pure logo display */
.hero__photo--logo {
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: visible;
}

.hero__logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 24px rgba(0,212,255,0.6));
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 18px rgba(0,212,255,0.5)); }
  50%       { filter: drop-shadow(0 0 36px rgba(0,212,255,0.9)); }
}

/* ── ABOUT ──────────────────────────────────────────────────── */
.about { background: var(--clr-bg-2); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.about__bio p {
  margin-bottom: 1.25rem;
  color: var(--clr-text);
  line-height: 1.8;
}

.about__bio strong { color: var(--clr-cyan); }

.about__info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.info-item {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--clr-text-dim);
}

.info-item i { color: var(--clr-cyan); font-size: 0.9rem; }

/* Skills */
.skills-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-text-hi);
  margin-bottom: 1.75rem;
  letter-spacing: 0.04em;
}

.skill-item {
  margin-bottom: 1.5rem;
}

.skill-item__header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.5rem;
}

.skill-item__name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text-hi);
  letter-spacing: 0.03em;
}

.skill-item__pct {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--clr-cyan);
}

.skill-bar {
  height: 6px;
  background: rgba(255,255,255,0.05);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.skill-bar__fill {
  height: 100%;
  width: 0;          /* animated by JS */
  border-radius: 999px;
  background: linear-gradient(90deg, var(--clr-cyan-dark), var(--clr-cyan));
  transition: width 1.2s var(--ease);
  position: relative;
}

/* Glow tip on bar */
.skill-bar__fill::after {
  content: '';
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  width: 8px; height: 8px;
  background: var(--clr-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--clr-cyan);
  opacity: 0;
  transition: opacity 0.4s 1s;
}

.skill-bar__fill.animated::after { opacity: 1; }

/* Stats */
.about__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem 1rem;
  text-align: center;
  transition: border-color var(--dur), box-shadow var(--dur);
  backdrop-filter: blur(8px);
}

.stat-card:hover {
  border-color: var(--clr-border-h);
  box-shadow: var(--shadow-h);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--clr-cyan);
  line-height: 1;
}

.stat-plus {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-cyan);
}

.stat-card p {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── PROJECTS ───────────────────────────────────────────────── */
.projects { background: var(--clr-bg); }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--dur), transform var(--dur), box-shadow var(--dur);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

/* top edge glow on hover */
.project-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-cyan), transparent);
  opacity: 0;
  transition: opacity var(--dur);
}

.project-card:hover { border-color: var(--clr-border-h); transform: translateY(-5px); box-shadow: var(--shadow-h); }
.project-card:hover::before { opacity: 1; }

.project-card__icon {
  width: 48px; height: 48px;
  background: var(--clr-cyan-dim);
  border: 1px solid var(--clr-border-h);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--clr-cyan);
  font-size: 1.15rem;
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text-hi);
  margin-bottom: 0.65rem;
}

.project-card p {
  font-size: 0.85rem;
  color: var(--clr-text-dim);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.project-card__tags {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.project-card__tags span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--clr-cyan);
  background: var(--clr-cyan-dim);
  border: 1px solid var(--clr-border);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.project-card__link {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-cyan);
  display: inline-flex; align-items: center; gap: 0.35rem;
  opacity: 0.7;
  transition: opacity var(--dur);
}

.project-card__link:hover { opacity: 1; }

/* ── GALLERY ─────────────────────────────────────────────────── */
.gallery { background: var(--clr-bg-2); }

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.gallery__item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  border: 1px solid var(--clr-border);
  transition: border-color var(--dur);
}

.gallery__item:hover { border-color: var(--clr-border-h); }

.gallery__thumb {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: var(--clr-cyan);
  opacity: 0.35;
  transition: opacity var(--dur), transform var(--dur);
}

/* Thumb color variations */
.gallery__thumb--1 { background: linear-gradient(135deg, #091823, #0d2535); }
.gallery__thumb--2 { background: linear-gradient(135deg, #0d1a0d, #0a2110); }
.gallery__thumb--3 { background: linear-gradient(135deg, #1a1609, #2a220a); }
.gallery__thumb--4 { background: linear-gradient(135deg, #140a1a, #1e0f2a); }
.gallery__thumb--5 { background: linear-gradient(135deg, #091823, #07121c); }
.gallery__thumb--6 { background: linear-gradient(135deg, #0d1421, #121d2f); }

.gallery__overlay {
  position: absolute; inset: 0;
  background: rgba(0,212,255,0.08);
  backdrop-filter: blur(4px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.6rem;
  opacity: 0;
  transition: opacity var(--dur);
  border-radius: var(--radius);
}

.gallery__overlay i { font-size: 1.6rem; color: var(--clr-cyan); }
.gallery__overlay span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--clr-text-hi); letter-spacing: 0.05em; text-align: center; padding: 0 1rem; }

.gallery__item:hover .gallery__thumb { opacity: 0.6; transform: scale(1.05); }
.gallery__item:hover .gallery__overlay { opacity: 1; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(5, 8, 14, 0.92);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s;
}

.lightbox.open { opacity: 1; visibility: visible; }

.lightbox__close {
  position: absolute; top: 1.5rem; right: 1.5rem;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  transition: border-color var(--dur), color var(--dur);
  display: flex; align-items: center; justify-content: center;
}

.lightbox__close:hover { border-color: var(--clr-cyan); color: var(--clr-cyan); }

.lightbox__content { text-align: center; }

.lightbox__visual {
  width: clamp(280px, 60vw, 700px);
  aspect-ratio: 4/3;
  background: var(--clr-card);
  border: 1px solid var(--clr-border-h);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 4rem;
  color: var(--clr-cyan);
  margin: 0 auto 1rem;
  box-shadow: var(--glow), var(--shadow-h);
}

.lightbox__caption {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--clr-cyan);
  letter-spacing: 0.15em;
}

/* ── CONTACT ─────────────────────────────────────────────────── */
.contact { background: var(--clr-bg); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact__info h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-text-hi);
  margin-bottom: 1rem;
  line-height: 1.4;
}

.contact__info > p {
  color: var(--clr-text-dim);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contact__details {
  display: flex; flex-direction: column; gap: 1rem;
  margin-bottom: 2rem;
}

.contact__detail-item {
  display: flex; align-items: center; gap: 0.85rem;
  color: var(--clr-text-dim);
  font-size: 0.9rem;
  transition: color var(--dur);
}

.contact__detail-item i { color: var(--clr-cyan); width: 18px; text-align: center; }
.contact__detail-item:hover { color: var(--clr-cyan); }

.contact__socials { display: flex; gap: 0.75rem; }

.social-btn {
  width: 42px; height: 42px;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-text-dim);
  font-size: 1rem;
  transition: border-color var(--dur), color var(--dur), background var(--dur), box-shadow var(--dur);
}

.social-btn:hover {
  border-color: var(--clr-cyan);
  color: var(--clr-cyan);
  background: var(--clr-cyan-dim);
  box-shadow: var(--glow);
}

/* Form */
.contact__form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-group { display: flex; flex-direction: column; gap: 0.45rem; }

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--clr-text-dim);
  text-transform: uppercase;
}

.form-group input,
.form-group textarea {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--clr-text-hi);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--dur), box-shadow var(--dur);
  resize: vertical;
  backdrop-filter: blur(4px);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-text-dim); opacity: 0.5; }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.08);
}

.form-group input.invalid,
.form-group textarea.invalid { border-color: var(--clr-error); }

.form-error {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--clr-error);
  letter-spacing: 0.05em;
  min-height: 1em;
}

.form-success {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--clr-success);
  letter-spacing: 0.08em;
  text-align: center;
  min-height: 1em;
}

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

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

.footer__logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--clr-text-hi);
}

/* Footer logo */
.footer__logo-wrap {
  display: flex; align-items: center; gap: 0.6rem;
  text-decoration: none;
}

.footer__logo-img {
  width: 32px; height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(0,212,255,0.4));
}

.footer__logo-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text-hi);
  letter-spacing: 0.04em;
}

.footer__copy,
.footer__credit {
  font-size: 0.8rem;
  color: var(--clr-text-dim);
}

/* ── BACK TO TOP ─────────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: 50%;
  color: var(--clr-cyan);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: all var(--dur);
  z-index: 800;
}

.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--clr-cyan); color: var(--clr-bg); box-shadow: var(--glow); }

/* ── ANIMATIONS ──────────────────────────────────────────────── */
@keyframes spin      { to { transform: rotate(360deg); } }
@keyframes spinSlow  { to { transform: rotate(360deg); } }
@keyframes blink     { 50% { opacity: 0; } }
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .gallery__grid  { grid-template-columns: repeat(2, 1fr); }
  .about__stats   { grid-template-columns: repeat(2, 1fr); }
  .hero__photo-wrap { right: 2%; width: clamp(180px, 22vw, 260px); }
}

@media (max-width: 768px) {
  :root { --section-pad: 4rem; }

  .navbar__links {
    position: fixed; top: 0; right: -100%; bottom: 0;
    width: 260px;
    flex-direction: column; align-items: flex-start;
    gap: 0;
    background: var(--clr-bg-3);
    border-left: 1px solid var(--clr-border);
    padding: 5rem 1.5rem 2rem;
    transition: right var(--dur) var(--ease);
    z-index: 999;
  }

  .navbar__links.open { right: 0; }
  .nav-link { width: 100%; padding: 0.75rem 1rem; border-radius: var(--radius-sm); }

  .navbar__burger { display: flex; z-index: 1001; }

  .hero {
    flex-direction: column-reverse;
    padding-top: 7rem;
    text-align: center;
    gap: 2.5rem;
    justify-content: center;
  }

  .hero__photo-wrap {
    position: relative;
    right: auto; top: auto; transform: none;
    width: 180px;
  }

  .hero__content { max-width: 100%; }
  .hero__actions { justify-content: center; }
  .hero__badges  { justify-content: center; }

  .about__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about__info-grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .projects__grid { grid-template-columns: 1fr; }
  .gallery__grid  { grid-template-columns: repeat(2, 1fr); }
  .about__stats   { grid-template-columns: repeat(2, 1fr); }
  .footer__inner  { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .gallery__grid { grid-template-columns: 1fr; }
  .about__stats  { grid-template-columns: 1fr 1fr; }
  .hero__actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}