/* ===== DESIGN TOKENS ===== */
:root {
  --bg: #070b14;
  --bg-alt: #0c1220;
  --surface: #111827;
  --surface-hover: #1a2335;
  --surface-elevated: #1e293b;
  --border: #1e293b;
  --border-light: #334155;
  --text: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-muted: rgba(59, 130, 246, 0.12);
  --accent: #10b981;
  --accent-muted: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(59,130,246,0.1);
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --nav-h: 64px;
  --max-w: 1120px;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; color: inherit; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }

/* ===== LAYOUT ===== */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 5rem 0; }
.section__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}
.section__title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-light), transparent);
}
.section__title span {
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--primary-muted);
}
.section--alt { background: var(--bg-alt); }

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(7, 11, 20, 0.8);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav__logo {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav__logo-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); display: inline-block; }
.nav__links { display: flex; align-items: center; gap: 0.25rem; }
.nav__link {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.nav__link:hover { color: var(--text); background: var(--surface-hover); }
.nav__link--active { color: var(--primary) !important; }
.nav__link--btn {
  background: var(--primary);
  color: #fff !important;
  padding: 0.5rem 1.125rem;
  margin-left: 0.5rem;
}
.nav__link--btn:hover { background: var(--primary-hover); }
.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav__toggle:hover { background: var(--surface-hover); }
.nav__toggle-bar {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  position: relative;
  transition: var(--transition);
}
.nav__toggle-bar::before,
.nav__toggle-bar::after {
  content: '';
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  position: absolute;
  transition: var(--transition);
}
.nav__toggle-bar::before { top: -6px; }
.nav__toggle-bar::after { top: 6px; }
.nav__toggle--open .nav__toggle-bar { background: transparent; }
.nav__toggle--open .nav__toggle-bar::before { top: 0; transform: rotate(45deg); }
.nav__toggle--open .nav__toggle-bar::after { top: 0; transform: rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h); left: 0; right: 0;
  background: rgba(7, 11, 20, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  padding: 0.75rem 0;
  transform: translateY(-110%);
  transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-menu--open { transform: translateY(0); }
.mobile-menu__link {
  display: block;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.mobile-menu__link:hover { color: var(--text); background: var(--surface-hover); }
.mobile-menu__link--btn {
  background: var(--primary);
  color: #fff !important;
  text-align: center;
  margin-top: 0.5rem;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 30% 40%, rgba(59, 130, 246, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 70% 60%, rgba(16, 185, 129, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 60%);
  pointer-events: none;
  animation: heroAmbient 12s ease-in-out infinite alternate;
}
@keyframes heroAmbient {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}
.hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 1; }
.hero__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  background: var(--primary-muted);
  margin-bottom: 1.5rem;
}
.hero__h1 { margin-bottom: 1.25rem; }
.hero__h1 em { font-style: normal; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero__p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero__cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero__image { display: flex; justify-content: center; }
.hero__image-inner {
  position: relative;
  width: min(320px, 80vw);
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: rotate(2deg);
  transition: var(--transition-slow);
}
.hero__image-inner:hover { transform: rotate(0deg) scale(1.02); }
.hero__image-inner img { width: 100%; height: 100%; object-fit: cover; }
.hero__image-inner::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
  pointer-events: none;
}

/* ===== CARDS ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}
.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  font-size: 1.25rem;
  margin-bottom: 1rem;
  background: var(--primary-muted);
  color: var(--primary);
}
.card__icon--accent { background: var(--accent-muted); color: var(--accent); }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.65; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }

/* ===== COMPETENCES ===== */
.competences__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; }
.competence {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.competence:hover {
  border-color: var(--primary);
  background: var(--surface-hover);
  transform: translateX(4px);
}
.competence__num {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--primary-muted);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.competence__text { font-weight: 600; font-size: 0.95rem; }

/* ===== PROJECTS ===== */
.projects__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.project:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.project__img {
  width: 100%;
  height: 180px;
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.project__img img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.project__body { padding: 1.25rem; }
.project__body h3 { font-size: 1.05rem; margin-bottom: 0.375rem; }
.project__body p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.55; margin-bottom: 0.75rem; }
.project__tags { display: flex; flex-wrap: wrap; gap: 0.375rem; }
.project__tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--surface-hover);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ===== PHOTOGRAPHY ===== */
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.photo-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.photo-card:hover {
  border-color: var(--primary);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.photo-card i { font-size: 1.5rem; color: var(--primary); width: 2rem; text-align: center; }
.photo-card span { font-weight: 600; font-size: 0.9rem; }
.photo-card small { color: var(--text-muted); font-size: 0.8rem; }

/* ===== TIMELINE ===== */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--border-light), var(--border), transparent);
}
.timeline__item {
  position: relative;
  padding: 0 0 2.5rem 1.5rem;
  transition: var(--transition);
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__dot {
  position: absolute;
  left: -1.65rem;
  top: 0.35rem;
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 3px solid var(--primary);
  background: var(--bg);
  z-index: 1;
  transition: var(--transition);
}
.timeline__item:hover .timeline__dot { background: var(--primary); box-shadow: 0 0 12px rgba(59,130,246,0.4); }
.timeline__item--muted .timeline__dot { border-color: var(--text-muted); }
.timeline__item:hover.timeline__item--muted .timeline__dot { background: var(--text-muted); box-shadow: none; }
.timeline__date {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--primary-muted);
  margin-bottom: 0.5rem;
}
.timeline__item--muted .timeline__date { color: var(--text-muted); background: var(--surface); }
.timeline__role { font-size: 0.85rem; color: var(--text-secondary); margin: 0.125rem 0 0.375rem; }
.timeline__desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; max-width: 600px; }

/* ===== TOOLS / RESOURCES ===== */
.tools__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.tool-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.tool-card:hover {
  border-color: var(--accent);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.tool-card__icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-muted);
  color: var(--accent);
  font-size: 1.125rem;
  flex-shrink: 0;
}
.tool-card h4 { font-size: 0.95rem; margin-bottom: 0.125rem; }
.tool-card p { font-size: 0.8rem; color: var(--text-muted); }

/* ===== CONTACT ===== */
.contact {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.contact__inner { text-align: center; }
.contact__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}
.contact__item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.contact__item:hover { color: var(--primary); }
.contact__item i { font-size: 1.25rem; width: 1.5rem; text-align: center; }
.contact__item span { font-size: 0.9rem; }

/* ===== FOOTER ===== */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
}
.btn--primary {
  background: var(--primary);
  color: #fff;
}
.btn--primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(59,130,246,0.3); }
.btn--outline {
  border: 1px solid var(--border-light);
  color: var(--text);
}
.btn--outline:hover { border-color: var(--text); background: var(--surface); transform: translateY(-1px); }

/* ===== ANIMATIONS ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal--visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
  .hero__p { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .hero__image { order: -1; }
  .hero__image-inner { width: min(220px, 60vw); }
  .grid-3 { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .competences__grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: 1fr; }
  .tools__grid { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .mobile-menu { display: block; }
  .section { padding: 3rem 0; }
  .section__title { margin-bottom: 2rem; }
}

@media (min-width: 901px) {
  .mobile-menu { display: none !important; }
}

@media (max-width: 480px) {
  .hero__h1 { font-size: clamp(1.5rem, 8vw, 2rem); }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .nav__logo { font-size: 1rem; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}