:root {
  --bg: #090b12;
  --bg-light: #f5f7fb;
  --surface: rgba(255,255,255,0.08);
  --surface-strong: rgba(255,255,255,0.12);
  --border: rgba(255,255,255,0.12);
  --accent: #6cffb0;
  --accent2: #7c3aed;
  --accent3: #47c5ff;
  --text: #edf2ff;
  --text-muted: #b3bbd1;
  --text-faint: #7d88a3;
  --shadow: 0 40px 90px rgba(0, 0, 0, 0.35);
  --radius: 26px;
  --transition: 0.35s ease;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

.light-mode {
  --bg: #f4f7fb;
  --surface: rgba(255,255,255,0.9);
  --surface-strong: rgba(255,255,255,0.95);
  --border: rgba(15,23,42,0.12);
  --text: #0f172a;
  --text-muted: #475569;
  --text-faint: #64748b;
  --shadow: 0 40px 90px rgba(15,23,42,0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: radial-gradient(circle at top right, rgba(108,255,176,0.14), transparent 18%),
              radial-gradient(circle at left center, rgba(124,58,237,0.12), transparent 20%),
              linear-gradient(180deg, #07101a 0%, #0b1220 100%);
  color: var(--text);
  font-family: var(--font-display);
  transition: background 0.45s ease, color 0.45s ease;
  overflow-x: hidden;
  opacity: 0;
  transform: translateY(16px);
}

body.page-loaded {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

body.light-mode {
  background: radial-gradient(circle at top right, rgba(108,255,176,0.11), transparent 18%),
              radial-gradient(circle at left center, rgba(124,58,237,0.08), transparent 18%),
              linear-gradient(180deg, #f8fafc 0%, #e6edf7 100%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.95rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #08101a;
  box-shadow: 0 22px 60px rgba(108,255,176,0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 28px 72px rgba(108,255,176,0.28);
}

.btn-ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border-color: rgba(255,255,255,0.12);
}

.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(108,255,176,0.08);
  transform: translateY(-2px);
}

.section-label {
  font-family: var(--font-mono);
  letter-spacing: 0.3em;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.77rem;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  line-height: 1.05;
  max-width: 760px;
  margin-bottom: 2rem;
}

.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

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

#navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 999;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  backdrop-filter: blur(24px);
  background: rgba(7, 10, 18, 0.45);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
}

#navbar.scrolled {
  background: rgba(6, 10, 21, 0.82);
}

.nav-brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
}

.dot { color: var(--accent); }

.nav-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-muted);
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transition: width 0.35s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle,
.hamburger {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover,
.hamburger:hover {
  transform: translateY(-2px);
  border-color: rgba(108,255,176,0.35);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.hero-section {
  position: relative;
  padding: 8rem 0 6rem;
  overflow: hidden;
}

.hero-panel {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.6rem;
  align-items: center;
  min-height: 82vh;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 1.3rem;
  text-transform: uppercase;
}

.hero-copy h1 {
  font-size: clamp(3.4rem, 6vw, 5.3rem);
  line-height: 0.96;
  margin-bottom: 1.4rem;
}

.hero-copy h1 .accent { color: var(--accent); }

.hero-lead,
.hero-type,
.hero-copy p {
  max-width: 46rem;
  color: var(--text-muted);
  line-height: 1.88;
}

.hero-lead { margin-bottom: 1.5rem; }

.hero-type {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-visual {
  position: relative;
}

.glass-card {
  padding: 2rem;
  border-radius: 36px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  backdrop-filter: blur(28px);
  box-shadow: 0 35px 90px rgba(0,0,0,0.22);
  overflow: hidden;
}

.visual-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.8rem;
}

.card-label {
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  text-transform: uppercase;
}

.visual-header h2 {
  font-size: 1.7rem;
  line-height: 1.2;
}

.status-chip {
  font-family: var(--font-mono);
  color: #09101b;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  padding: 0.65rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.visual-body {
  display: grid;
  gap: 1.4rem;
}

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

.badge {
  font-family: var(--font-mono);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}

.badge.accent {
  background: rgba(108,255,176,0.12);
  border-color: rgba(108,255,176,0.22);
}

.preview-panel {
  padding: 1.6rem;
  border-radius: 28px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  position: relative;
  overflow: hidden;
}

.preview-wave {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(108,255,176,0.12), transparent 18%),
              radial-gradient(circle at 80% 30%, rgba(124,58,237,0.14), transparent 16%);
  opacity: 0.85;
}

.preview-metrics {
  position: relative;
  display: grid;
  gap: 1rem;
  z-index: 1;
}

.preview-metrics div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
  font-weight: 600;
}

.preview-metrics span {
  color: var(--text-faint);
  font-size: 0.95rem;
}

.visual-stats {
  display: grid;
  gap: 0.85rem;
}

.stat-pill {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-radius: 24px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}

.stat-pill span {
  color: var(--text-faint);
  font-size: 0.95rem;
}

.stat-pill strong {
  color: var(--text);
}

.hero-deco {
  position: absolute;
  border-radius: 50%;
  filter: blur(16px);
  opacity: 0.65;
  animation: float 10s ease-in-out infinite;
}

.deco-1 { width: 190px; height: 190px; background: rgba(108,255,176,0.14); top: 10%; left: -4%; }
.deco-2 { width: 140px; height: 140px; background: rgba(124,58,237,0.16); bottom: 18%; right: 12%; animation-delay: 1.4s; }
.deco-3 { width: 220px; height: 220px; background: rgba(255,255,255,0.08); top: 42%; right: -8%; animation-delay: 0.8s; }

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

.about-section,
.skills-section,
.projects-section,
.contact-section {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 2.8rem;
  align-items: start;
}

.about-copy p,
.contact-copy {
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 1.4rem;
}

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

.about-tags span {
  font-family: var(--font-mono);
  color: var(--text);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
}

.about-stats {
  display: grid;
  gap: 1.2rem;
}

.stat-card {
  padding: 1.8rem;
  border-radius: 28px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108,255,176,0.22);
  box-shadow: 0 26px 60px rgba(108,255,176,0.12);
}

.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.stat-card p {
  color: var(--text-muted);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.skill-card {
  padding: 1.8rem;
  border-radius: 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 18px 45px rgba(0,0,0,0.16);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108,255,176,0.22);
  box-shadow: 0 26px 58px rgba(108,255,176,0.14);
}

.skill-card-top {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.skill-icon {
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  font-size: 1.1rem;
}

.skill-card h3 {
  font-size: 1.15rem;
}

.skill-card p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  line-height: 1.8;
}

.skill-meter {
  height: 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
  margin-bottom: 1rem;
}

.skill-meter-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 999px;
}

.skill-meter-fill.accent2 { background: linear-gradient(90deg, #7c3aed, #00ffb8); }

.skill-meter-fill.accent3 { background: linear-gradient(90deg, #7c3aed, #47c5ff); }

.skill-tags {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card {
  position: relative;
  padding: 1.4rem;
  border-radius: 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 22px 70px rgba(0,0,0,0.18);
  display: grid;
  gap: 1.1rem;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(108,255,176,0.22);
  box-shadow: 0 30px 90px rgba(0,0,0,0.24);
}

.project-preview {
  height: 190px;
  border-radius: 28px;
  background-size: cover;
  background-position: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
}

.preview-chat {
  background: linear-gradient(135deg, rgba(108,255,176,0.18), rgba(124,58,237,0.22));
}

.preview-ui {
  background: linear-gradient(135deg, rgba(124,58,237,0.18), rgba(108,255,176,0.18));
}

.project-content {
  display: grid;
  gap: 0.95rem;
}

.project-category {
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.18em;
  font-size: 0.75rem;
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.15rem;
}

.project-card p {
  color: var(--text-muted);
  line-height: 1.85;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.project-more {
  align-items: center;
  justify-content: center;
  text-align: center;
}

.project-more p {
  color: var(--text-muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.contact-panel {
  padding: 2rem;
  border-radius: 32px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
}

.contact-copy {
  margin-bottom: 2rem;
}

.contact-meta {
  display: grid;
  gap: 1.4rem;
}

.contact-meta div span {
  display: block;
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}

.contact-meta div a,
.contact-meta div p {
  color: var(--text);
  line-height: 1.8;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  border: 1px solid rgba(255,255,255,0.12);
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.social-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(108,255,176,0.08);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 1.1rem 1.3rem;
  font-family: var(--font-display);
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-faint);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(108,255,176,0.12);
}

.full-width { width: 100%; }

.form-status {
  min-height: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  text-align: center;
  color: var(--accent);
}

.footer {
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

@media (max-width: 1024px) {
  .hero-panel,
  .about-grid,
  .contact-grid,
  .project-grid,
  .skills-grid { grid-template-columns: 1fr; }

  .hero-visual { justify-self: stretch; }
}

@media (max-width: 768px) {
  #navbar {
    grid-template-columns: auto auto;
    padding: 1rem 1.4rem;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background: rgba(8, 12, 24, 0.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 4rem 1.5rem;
    transition: right 0.35s ease;
    z-index: 998;
  }

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

  .nav-actions { gap: 0.8rem; }
  .hamburger { display: inline-flex; }
  .nav-tag { display: none; }
  .nav-link { font-size: 1.05rem; }
  .hero-section { padding-top: 7rem; }
}

@media (max-width: 560px) {
  .hero-copy h1 { font-size: 3rem; }
  .hero-panel { gap: 1.5rem; }
  .glass-card { padding: 1.5rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .hero-deco { display: none; }
}