:root {
  --bg: #0b0f14;
  --bg-alt: #0f141b;
  --surface: #141b24;
  --surface-2: #1a2330;
  --border: #243042;
  --text: #e6edf5;
  --text-dim: #93a1b5;
  --text-mute: #64748b;
  --accent: #4ade80;
  --accent-2: #22d3ee;
  --accent-soft: rgba(74, 222, 128, 0.12);
  --radius: 14px;
  --maxw: 1080px;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 20, 0.75);
  border-bottom: 1px solid var(--border);
}
.nav__brand { font-weight: 800; font-size: 1.1rem; letter-spacing: -0.02em; }
.nav__brand span { color: var(--accent); }
.nav__links { display: flex; gap: 28px; align-items: center; }
.nav__links a { color: var(--text-dim); font-size: 0.92rem; font-weight: 500; transition: color .2s; }
.nav__links a:hover { color: var(--text); }
.nav__cta {
  color: var(--accent) !important; border: 1px solid var(--accent);
  padding: 7px 16px; border-radius: 999px; font-size: 0.85rem !important;
}
.nav__cta:hover { background: var(--accent-soft); }

/* HERO */
.hero { position: relative; overflow: hidden; padding: 130px 24px 120px; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(600px 400px at 15% 20%, rgba(74,222,128,0.10), transparent 60%),
    radial-gradient(600px 400px at 85% 30%, rgba(34,211,238,0.10), transparent 60%);
  pointer-events: none;
}
.hero__inner { max-width: var(--maxw); margin: 0 auto; position: relative; }
.hero__eyebrow { color: var(--accent); font-family: var(--mono); font-size: 0.9rem; margin-bottom: 14px; }
.hero__title { font-size: clamp(2.6rem, 7vw, 4.4rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.hero__subtitle { font-size: 1.3rem; color: var(--text); margin-top: 18px; font-weight: 500; }
.hero__subtitle strong { color: var(--accent); font-weight: 600; }
.hero__lead { max-width: 620px; color: var(--text-dim); margin-top: 20px; font-size: 1.05rem; }
.hero__actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  transition: all .2s; border: 1px solid transparent; cursor: pointer;
}
.btn--primary { background: var(--accent); color: #06210f; }
.btn--primary:hover { background: #5ef0a0; transform: translateY(-2px); }
.btn--ghost { border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--sm { padding: 8px 16px; font-size: 0.85rem; }

/* SECTIONS */
.section { padding: 100px 0; }
.section--alt { background: var(--bg-alt); }
.section__head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 50px; }
.section__num { font-family: var(--mono); color: var(--accent); font-size: 0.9rem; }
.section__head h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; letter-spacing: -0.02em; }

/* ABOUT */
.about { max-width: 760px; }
.about p { color: var(--text-dim); margin-bottom: 18px; font-size: 1.08rem; }
.about strong { color: var(--text); font-weight: 600; }

/* CASES */
.case {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  padding: 56px 0; border-bottom: 1px solid var(--border);
}
.case:last-of-type { border-bottom: none; }
.case--reverse .case__media { order: 2; }
.case__demo { position: relative; }
.case__tag {
  position: absolute; top: -12px; left: 16px; z-index: 2;
  background: var(--accent); color: #06210f; font-size: 0.72rem; font-weight: 700;
  padding: 5px 12px; border-radius: 999px; letter-spacing: 0.02em;
}
.case__tag--alt { background: var(--accent-2); color: #04222a; }

/* browser mockup */
.case__browser {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
}
.case__browser-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 14px;
  background: var(--surface-2); border-bottom: 1px solid var(--border);
}
.case__browser-bar span { width: 11px; height: 11px; border-radius: 50%; background: #3a4658; }
.case__browser-bar em {
  margin-left: 10px; font-family: var(--mono); font-size: 0.78rem;
  color: var(--text-mute); font-style: normal;
}
.case__browser-body { padding: 26px; min-height: 230px; }

.ph-hero h3 { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; }
.ph-hero h3 span { color: var(--accent); }
.ph-hero p { color: var(--text-dim); margin-top: 6px; font-size: 0.92rem; }
.ph-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px;
}
.ph-card {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px; display: flex; flex-direction: column; gap: 4px;
}
.ph-card b { font-size: 0.82rem; color: var(--accent); }
.ph-card span { font-size: 0.78rem; color: var(--text-mute); font-family: var(--mono); }

.soul-body { text-align: center; display: flex; flex-direction: column; justify-content: center; }
.soul-body h3 { font-size: 2rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.soul-sub { color: var(--text-dim); margin-top: 6px; }
.soul-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.soul-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 16px; font-size: 0.9rem; font-weight: 500; }

.case__title { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.01em; }
.case__role { color: var(--accent); font-family: var(--mono); font-size: 0.85rem; margin-top: 6px; }
.case__desc { color: var(--text-dim); margin-top: 16px; }
.case__content h4 { margin-top: 24px; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-mute); }
.case__content p { color: var(--text-dim); margin-top: 8px; font-size: 0.98rem; }
.case__list { list-style: none; margin-top: 10px; }
.case__list li {
  position: relative; padding-left: 22px; color: var(--text-dim);
  margin-bottom: 10px; font-size: 0.95rem;
}
.case__list li::before {
  content: "▹"; position: absolute; left: 0; color: var(--accent);
}
.case__list code, .about code {
  font-family: var(--mono); font-size: 0.85em; background: var(--surface-2);
  padding: 2px 6px; border-radius: 5px; color: var(--accent-2); border: 1px solid var(--border);
}
.case__stack { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.case__stack span {
  font-family: var(--mono); font-size: 0.76rem; color: var(--text-dim);
  background: var(--surface-2); border: 1px solid var(--border); padding: 5px 10px; border-radius: 6px;
}
.case__links { display: flex; gap: 10px; margin-top: 22px; flex-wrap: wrap; }

/* SKILLS */
.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.skill-group { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.skill-group h3 { font-size: 1rem; margin-bottom: 16px; color: var(--text); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span {
  font-size: 0.84rem; color: var(--text-dim); background: var(--bg-alt);
  border: 1px solid var(--border); padding: 6px 12px; border-radius: 999px;
}

/* TIMELINE */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px; background: var(--border); }
.timeline__item { position: relative; padding-bottom: 38px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__dot { position: absolute; left: -30px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--bg-alt); }
.timeline__date { font-family: var(--mono); font-size: 0.78rem; color: var(--accent); }
.timeline__body h3 { font-size: 1.1rem; margin-top: 6px; }
.timeline__body p { color: var(--text-dim); margin-top: 6px; font-size: 0.95rem; }
.traj__more { color: var(--text-mute); margin-top: 30px; font-size: 0.92rem; }
.traj__more a { color: var(--accent); }

/* CONTACT */
.contact__lead { font-size: 1.15rem; color: var(--text-dim); margin-bottom: 36px; }
.contact__cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.contact__card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; display: flex; flex-direction: column; gap: 6px; transition: all .2s;
}
.contact__card:hover { border-color: var(--accent); transform: translateY(-3px); }
.contact__ico { font-size: 1.5rem; }
.contact__label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-mute); }
.contact__value { font-weight: 600; color: var(--text); word-break: break-all; }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 30px 24px; text-align: center; color: var(--text-mute); font-size: 0.85rem; }

/* ABOUT QUOTE */
.about__quote {
  margin-top: 30px;
  padding: 18px 24px;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 10px 10px 0;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--text);
}
.about__quote span { color: var(--accent); font-size: 1.4rem; }

/* PROJECTS INTRO */
.projects__intro { color: var(--text-dim); margin-bottom: 40px; max-width: 700px; }

/* TIMELINE LIST */
.timeline__list { list-style: none; margin-top: 12px; }
.timeline__list li {
  position: relative; padding-left: 20px; color: var(--text-dim);
  margin-bottom: 7px; font-size: 0.92rem;
}
.timeline__list li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }
.timeline__body .case__stack { margin-top: 16px; }

/* FORMATION */
.formation { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.formation__card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px;
}
.formation__card h3 { font-size: 1.15rem; margin-bottom: 6px; }
.formation__degree { color: var(--accent); font-weight: 600; font-size: 0.98rem; }
.formation__period { font-family: var(--mono); font-size: 0.82rem; color: var(--text-mute); margin: 4px 0 12px; }
.formation__card p:last-child { color: var(--text-dim); font-size: 0.92rem; }

/* CERTS */
.certs__title {
  margin-top: 50px; margin-bottom: 22px; font-size: 1.1rem; color: var(--text);
  text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.85rem;
}
.certs { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.cert {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px;
}
.cert__ico { font-size: 1.4rem; }
.cert b { display: block; font-size: 0.96rem; }
.cert em { font-style: normal; color: var(--text-mute); font-size: 0.82rem; }

/* RESPONSIVE */
@media (max-width: 820px) {
  .nav__links a:not(.nav__cta) { display: none; }
  .case { grid-template-columns: 1fr; gap: 32px; }
  .case--reverse .case__media { order: 0; }
  .section { padding: 70px 0; }
  .hero { padding: 80px 24px 70px; }
}