/* ============================================================
   FENDY YULIANTO — PORTFOLIO
   style.css | Modern, Minimal, Futuristic
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg-primary:    #040b14;
  --bg-secondary:  #0a1628;
  --bg-card:       #0d1f38;
  --bg-card-hover: #112040;
  --accent-cyan:   #64ffda;
  --accent-coral:  #ff6b6b;
  --accent-blue:   #4fc3f7;
  --text-primary:  #e8f4fd;
  --text-secondary:#8892b0;
  --text-muted:    #4a5568;
  --border:        rgba(100, 255, 218, 0.12);
  --border-hover:  rgba(100, 255, 218, 0.35);
  --shadow-card:   0 4px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow:   0 0 30px rgba(100, 255, 218, 0.08);
  --font-heading:  'Montserrat', sans-serif;
  --font-body:     'Roboto', sans-serif;
  --font-mono:     'Fira Code', 'Courier New', monospace;
  --radius:        12px;
  --radius-sm:     8px;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-h:         72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; }

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

::selection { background: rgba(100, 255, 218, 0.2); color: var(--accent-cyan); }

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-cyan); }

/* ── Background grid decoration ───────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(100,255,218,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(100,255,218,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── Utility ───────────────────────────────────────────────── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.section-label::after {
  content: '';
  flex: 1;
  max-width: 60px;
  height: 1px;
  background: var(--accent-cyan);
  opacity: 0.4;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

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

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 3.5rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--accent-cyan);
  background: rgba(100, 255, 218, 0.05);
  letter-spacing: 0.06em;
}

/* ── Reveal animation ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

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

/* ════════════════════════════════════════════════════════════
   NAV
   ════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  background: rgba(4, 11, 20, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}

.nav-logo img {
  height: 38px;
  width: auto;
  filter: brightness(1.1);
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.nav-logo-text span {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-cyan);
  background: rgba(100, 255, 218, 0.07);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan) !important;
  background: transparent;
  transition: background var(--transition), color var(--transition) !important;
}

.nav-cta:hover {
  background: rgba(100, 255, 218, 0.1) !important;
  color: var(--accent-cyan) !important;
}

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

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 2rem) 0 4rem;
  position: relative;
  overflow: hidden;
}

/* Radial glow blobs */
.hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(100,255,218,0.06) 0%, transparent 70%);
  top: -100px; right: -100px;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(79,195,247,0.05) 0%, transparent 70%);
  bottom: 0; left: -80px;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-cyan);
  letter-spacing: 0.14em;
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.2s forwards;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.35s forwards;
}

.hero-title .name { color: var(--text-primary); }
.hero-title .accent { color: var(--accent-cyan); }

.hero-role {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.5s forwards;
}

.hero-role .typed-cursor {
  color: var(--accent-cyan);
  animation: blink 1s step-end infinite;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 2.4rem;
  line-height: 1.8;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.65s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.8s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

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

.btn-primary:hover {
  background: #7fffea;
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(100, 255, 218, 0.25);
}

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

.btn-outline:hover {
  background: rgba(100, 255, 218, 0.08);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.95s forwards;
}

.stat-item { text-align: center; }

.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 0.3rem;
  text-transform: uppercase;
}

/* Hero Visual — floating code card */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 1s ease 0.6s forwards;
}

.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.9;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  position: relative;
  max-width: 420px;
  width: 100%;
  animation: float 6s ease-in-out infinite;
}

.code-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius) + 1px);
  background: linear-gradient(135deg, rgba(100,255,218,0.15), transparent 50%, rgba(79,195,247,0.1));
  z-index: -1;
}

.code-dots {
  display: flex;
  gap: 6px;
  margin-bottom: 1rem;
}

.code-dots span {
  width: 12px; height: 12px;
  border-radius: 50%;
}

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

.code-line { display: flex; gap: 0.75rem; }
.ln { color: var(--text-muted); user-select: none; min-width: 1.2rem; text-align: right; }
.kw  { color: #c792ea; }
.fn  { color: #82aaff; }
.str { color: var(--accent-cyan); }
.cm  { color: var(--text-muted); font-style: italic; }
.op  { color: #89ddff; }
.val { color: #f78c6c; }
.cls { color: #ffcb6b; }

/* ════════════════════════════════════════════════════════════
   ABOUT
   ════════════════════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 5rem;
  align-items: center;
}

.about-image-wrap {
  position: relative;
}

.about-image-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.about-image-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(4,11,20,0.7));
}

.about-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(1.05);
  transition: filter var(--transition), transform 0.6s ease;
}

.about-image-frame:hover .about-avatar {
  filter: grayscale(0%) contrast(1.1);
  transform: scale(1.02);
}

/* decorative border offset */
.about-image-wrap::before {
  content: '';
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius);
  opacity: 0.25;
  z-index: -1;
}

.about-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.4rem;
  box-shadow: var(--shadow-card);
  z-index: 2;
}

.about-badge-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
}

.about-badge-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.25rem;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  font-size: 1.02rem;
}

.about-content p strong { color: var(--accent-cyan); }

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 2rem;
}

.pillar {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.9rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), transform var(--transition);
}

.pillar:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.pillar-icon {
  color: var(--accent-cyan);
  font-size: 1rem;
  margin-top: 0.1rem;
  flex-shrink: 0;
}

.pillar-text { font-size: 0.84rem; color: var(--text-secondary); font-weight: 500; }

/* ════════════════════════════════════════════════════════════
   SKILLS
   ════════════════════════════════════════════════════════════ */
.skills-bg {
  background: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

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

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

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

.skill-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(100, 255, 218, 0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.1rem;
  transition: background var(--transition);
}

.skill-card:hover .skill-icon {
  background: rgba(100, 255, 218, 0.14);
}

.skill-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.skill-level {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 0.9rem;
}

.skill-bar-bg {
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 2px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ════════════════════════════════════════════════════════════
   EXPERIENCE
   ════════════════════════════════════════════════════════════ */
.experience-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.exp-tabs {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--border);
}

.exp-tab {
  padding: 1rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  background: none;
  text-align: left;
  border-top: none;
  border-right: none;
  border-bottom: none;
}

.exp-tab:hover { color: var(--text-secondary); }

.exp-tab.active {
  color: var(--accent-cyan);
  border-left-color: var(--accent-cyan);
  background: rgba(100, 255, 218, 0.04);
}

.exp-panels { position: relative; }

.exp-panel {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.exp-panel.active {
  display: block;
  opacity: 1;
  transform: none;
}

.exp-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

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

.exp-period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.exp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.exp-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.exp-list li::before {
  content: '▹';
  color: var(--accent-cyan);
  flex-shrink: 0;
  margin-top: 0.05rem;
}

/* ════════════════════════════════════════════════════════════
   PROJECTS
   ════════════════════════════════════════════════════════════ */
.projects-bg {
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(to top, rgba(100,255,218,0.03), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}

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

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

.project-icon {
  font-size: 1.8rem;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-link {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: color var(--transition), transform var(--transition);
  display: flex;
}

.project-link:hover {
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.project-name {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition);
}

.project-card:hover .project-name { color: var(--accent-cyan); }

.project-desc {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

/* ════════════════════════════════════════════════════════════
   CONTACT
   ════════════════════════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.contact-info h3 span { color: var(--accent-cyan); }

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition);
}

.contact-item:hover { color: var(--text-primary); }

.contact-item-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(100,255,218,0.06);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1rem;
  flex-shrink: 0;
  transition: background var(--transition);
}

.contact-item:hover .contact-item-icon {
  background: rgba(100,255,218,0.12);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: color var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none;
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.form-group {
  margin-bottom: 1.4rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: none;
}

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

.form-control:focus {
  border-color: rgba(100,255,218,0.4);
  box-shadow: 0 0 0 3px rgba(100,255,218,0.06);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-status {
  font-size: 0.85rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
}

.form-status.success { color: var(--accent-cyan); }
.form-status.error   { color: var(--accent-coral); }

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

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

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

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

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--accent-cyan); }

/* ── Back to top ───────────────────────────────────────────── */
.back-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), border-color var(--transition);
  z-index: 999;
  text-decoration: none;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-top:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  color: var(--accent-cyan);
}

/* ════════════════════════════════════════════════════════════
   KEYFRAMES
   ════════════════════════════════════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

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

@keyframes pulse-ring {
  0%   { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(100,255,218,0.3); }
  70%  { transform: scale(1);    box-shadow: 0 0 0 10px rgba(100,255,218,0); }
  100% { transform: scale(0.95); }
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .hero-inner       { grid-template-columns: 1fr; text-align: center; }
  .hero-desc        { margin: 0 auto 2.4rem; }
  .hero-actions     { justify-content: center; }
  .hero-stats       { justify-content: center; }
  .hero-visual      { display: none; }
  .about-grid       { grid-template-columns: 1fr; }
  .about-image-wrap { max-width: 360px; margin: 0 auto; }
  .experience-layout{ grid-template-columns: 1fr; }
  .exp-tabs         { flex-direction: row; border-left: none; border-bottom: 2px solid var(--border); overflow-x: auto; }
  .exp-tab          { border-left: none; margin-left: 0; border-bottom: 2px solid transparent; margin-bottom: -2px; white-space: nowrap; }
  .exp-tab.active   { border-bottom-color: var(--accent-cyan); border-left-color: transparent; background: none; }
  .contact-grid     { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --nav-h: 62px; }
  .section          { padding: 70px 0; }
  .nav-links        { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: rgba(4,11,20,0.97); backdrop-filter: blur(18px); flex-direction: column; padding: 1.5rem 2rem 2rem; gap: 0.25rem; border-bottom: 1px solid var(--border); }
  .nav-links.open   { display: flex; }
  .nav-hamburger    { display: flex; }
  .form-row         { grid-template-columns: 1fr; }
  .about-pillars    { grid-template-columns: 1fr; }
  .projects-grid    { grid-template-columns: 1fr; }
  .skills-grid      { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .skills-grid      { grid-template-columns: 1fr; }
}

/* ── Active nav highlight ──────────────────────────────────── */
.nav-dot {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-cyan);
  margin-right: 4px;
  vertical-align: middle;
  opacity: 0;
  transition: opacity 0.2s;
}

.nav-links a.active .nav-dot { opacity: 1; }