/* ═══════════════════════════════════════════════
   VARIABLES
═══════════════════════════════════════════════ */
:root {
  --blue:    #2563eb;
  --blue-l:  #eff6ff;
  --blue-m:  #dbeafe;
  --slate-l: #f8fafc;
  --slate-m: #f1f5f9;
  --border:  #e2e8f0;
  --text:    #0f172a;
  --text-m:  #475569;
  --text-l:  #94a3b8;
  --green:   #16a34a;
  --purple:  #7c3aed;
  --r:       12px;
  --sw:      280px;
  --shadow:  0 1px 3px rgba(0,0,0,.07), 0 4px 16px rgba(0,0,0,.05);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.10);
}

/* ═══════════════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: #fff;
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.65;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
strong { font-weight: 600; color: var(--text); }

/* ═══════════════════════════════════════════════
   SIDEBAR
═══════════════════════════════════════════════ */
.sidebar {
  position: fixed; top: 0; left: 0;
  width: var(--sw); height: 100vh;
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 100; overflow-y: auto;
  transition: transform .3s ease;
}
.sb-inner {
  display: flex; flex-direction: column;
  height: 100%; padding: 36px 22px; gap: 32px;
}

/* Profile */
.sb-profile {
  display: flex; flex-direction: column;
  align-items: center; text-align: center; gap: 10px;
}
.sb-photo-wrap { position: relative; display: inline-block; }
.sb-photo {
  width: 84px; height: 84px; border-radius: 50%;
  object-fit: cover; object-position: top center;
  border: 3px solid var(--blue);
  box-shadow: 0 0 0 4px var(--blue-m);
}
.sb-badge {
  position: absolute; bottom: 3px; right: 3px;
  width: 16px; height: 16px;
  background: var(--green); border-radius: 50%;
  border: 2px solid #fff;
}
.sb-name {
  font-family: 'Sora', sans-serif;
  font-size: .92rem; font-weight: 700; color: var(--text); line-height: 1.3;
}
.sb-role { font-size: .72rem; color: var(--text-m); line-height: 1.4; max-width: 190px; }
.sb-avail {
  display: inline-flex; align-items: center; gap: 6px;
  background: #f0fdf4; border: 1px solid #bbf7d0;
  color: var(--green); padding: 4px 12px;
  border-radius: 100px; font-size: .7rem; font-weight: 600;
}
.sb-avail::before {
  content: ''; width: 7px; height: 7px;
  background: var(--green); border-radius: 50%;
  animation: blink 2s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

/* Nav */
.sb-nav { display: flex; flex-direction: column; gap: 2px; }
.sn {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 13px; border-radius: 9px;
  font-size: .84rem; font-weight: 500; color: var(--text-m);
  transition: all .15s;
}
.sn:hover, .sn.active { background: var(--blue-l); color: var(--blue); }
.sn svg {
  width: 16px; height: 16px; flex-shrink: 0;
  stroke: currentColor; fill: none; stroke-width: 2;
}

/* Contacts */
.sb-contacts {
  margin-top: auto; border-top: 1px solid var(--border);
  padding-top: 20px; display: flex; flex-direction: column; gap: 6px;
}
.sc {
  display: flex; align-items: center; gap: 9px;
  font-size: .72rem; color: var(--text-l);
  transition: color .15s; padding: 3px 0; word-break: break-all;
}
.sc:hover { color: var(--blue); }
.sc svg {
  width: 13px; height: 13px; flex-shrink: 0;
  stroke: currentColor; fill: none; stroke-width: 2;
}

/* Mobile button */
.mob-btn {
  display: none; position: fixed; top: 14px; left: 14px; z-index: 200;
  width: 40px; height: 40px; border-radius: 10px;
  background: #fff; border: 1px solid var(--border);
  box-shadow: var(--shadow); cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.mob-btn span { width: 18px; height: 2px; background: #64748b; border-radius: 2px; display: block; }

/* ═══════════════════════════════════════════════
   MAIN
═══════════════════════════════════════════════ */
.main { margin-left: var(--sw); min-height: 100vh; }

/* ═══════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════ */
.hero {
  display: grid; grid-template-columns: 1fr 320px;
  min-height: 100vh; align-items: stretch;
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #f8fafc 0%, #fff 55%, #eff6ff 100%);
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 80% at 30% 50%, rgba(37,99,235,.04) 0%, transparent 70%);
}
.hero-left {
  display: flex; flex-direction: column; justify-content: center;
  padding: 80px 6% 80px 7%; position: relative; z-index: 1;
}
.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem; color: var(--blue); letter-spacing: 1.5px; margin-bottom: 20px;
}
.hero-h1 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(2.2rem, 3.5vw, 3.4rem);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -1.5px; color: var(--text); margin-bottom: 8px;
}
.hero-h1 span { color: var(--blue); }
.hero-subtitle {
  font-family: 'Sora', sans-serif; font-size: 1rem;
  font-weight: 600; color: var(--text-m); margin-bottom: 22px;
}
.hero-desc {
  font-size: .95rem; color: var(--text-m);
  max-width: 500px; line-height: 1.8; margin-bottom: 34px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 44px; }
.btn-p {
  padding: 13px 26px; background: var(--blue); color: #fff;
  font-weight: 600; font-size: .88rem; border-radius: 10px;
  transition: all .2s; box-shadow: 0 4px 14px rgba(37,99,235,.3);
  font-family: 'Sora', sans-serif;
}
.btn-p:hover { background: #1d4ed8; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,99,235,.35); }
.btn-s {
  padding: 13px 26px; background: #fff; color: var(--blue);
  font-weight: 600; font-size: .88rem; border-radius: 10px;
  border: 1.5px solid var(--blue-m); transition: all .2s;
  font-family: 'Sora', sans-serif;
}
.btn-s:hover { background: var(--blue-l); transform: translateY(-2px); }

.hero-stats { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat strong {
  font-family: 'Sora', sans-serif; font-size: 1.75rem;
  font-weight: 800; color: var(--blue); line-height: 1;
}
.stat span { font-size: .7rem; color: var(--text-l); text-transform: uppercase; letter-spacing: .5px; }
.stat-sep { width: 1px; height: 30px; background: var(--border); }

/* Hero right photo */
.hero-right {
  background: linear-gradient(160deg, var(--blue) 0%, #1e40af 100%);
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-end;
  padding: 60px 36px 0; position: relative; overflow: hidden;
}
.hero-right::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='20' cy='20' r='1.5' fill='%23ffffff' fill-opacity='0.06'/%3E%3C/svg%3E");
}
.hero-photo-card {
  position: relative; z-index: 1;
  background: rgba(255,255,255,.12); backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 18px 18px 0 0; padding: 18px 18px 0;
  width: 100%; max-width: 260px;
  box-shadow: 0 -8px 40px rgba(0,0,0,.2);
}
.hero-photo-tag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: #fff; border: 1px solid var(--border);
  padding: 5px 14px; border-radius: 100px;
  font-size: .73rem; font-weight: 600; color: var(--blue);
  white-space: nowrap; box-shadow: var(--shadow);
}
.hero-photo {
  width: 100%; border-radius: 10px 10px 0 0;
  object-fit: cover; object-position: top center;
  display: block; aspect-ratio: 3/4;
}

/* ═══════════════════════════════════════════════
   SECTIONS
═══════════════════════════════════════════════ */
.section { padding: 88px 7%; border-bottom: 1px solid var(--border); }
.bg-light { background: var(--slate-l); }
.sw { max-width: 1040px; margin: 0 auto; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: .68rem;
  text-transform: uppercase; letter-spacing: 3px;
  color: var(--blue); margin-bottom: 8px;
}
.s-h {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 700; letter-spacing: -.5px; color: var(--text); margin-bottom: 10px;
}
.s-intro { color: var(--text-m); margin-bottom: 40px; font-size: .92rem; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ─── ABOUT ─── */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 52px; align-items: start; margin-top: 36px; }
.about-text p { color: var(--text-m); line-height: 1.85; margin-bottom: 16px; font-size: .93rem; }
.langs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.lang { padding: 5px 13px; background: var(--slate-m); border-radius: 100px; font-size: .77rem; color: var(--text-m); font-weight: 500; }
.about-cards { display: flex; flex-direction: column; gap: 12px; }
.ab {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r);
  padding: 18px 20px; display: flex; gap: 14px; align-items: flex-start;
  box-shadow: var(--shadow); transition: box-shadow .2s, transform .2s;
}
.ab:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.ab-icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 1px; }
.ab-body strong { display: block; font-size: .88rem; color: var(--text); margin-bottom: 3px; }
.ab-body span { font-size: .78rem; color: var(--text-m); line-height: 1.5; }

/* ─── TIMELINE ─── */
.timeline { position: relative; padding-left: 30px; margin-top: 36px; }
.timeline::before {
  content: ''; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(to bottom, var(--blue), var(--blue-m), transparent); border-radius: 2px;
}
.tl-item { position: relative; padding: 0 0 38px 30px; }
.tl-dot {
  position: absolute; left: -9px; top: 4px;
  width: 16px; height: 16px; background: #fff;
  border: 2.5px solid var(--blue); border-radius: 50%;
  box-shadow: 0 0 0 3px var(--blue-m);
}
.tl-date { font-family: 'JetBrains Mono', monospace; font-size: .72rem; color: var(--blue); margin-bottom: 6px; }
.tl-title { font-family: 'Sora', sans-serif; font-size: .98rem; font-weight: 700; color: var(--text); margin-bottom: 3px; }
.tl-lieu { font-size: .82rem; color: var(--text-l); }

/* ─── EXPERIENCE ─── */
.exp-card {
  background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--blue);
  border-radius: var(--r); padding: 28px 30px; box-shadow: var(--shadow); margin-top: 36px;
}
.exp-header { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.exp-icon {
  width: 44px; height: 44px; background: var(--blue-l);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.exp-title { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1rem; color: var(--text); }
.exp-org { font-size: .83rem; color: var(--text-m); margin-top: 2px; }
.exp-period {
  margin-left: auto; font-family: 'JetBrains Mono', monospace;
  font-size: .72rem; background: var(--blue-l); color: var(--blue);
  padding: 4px 12px; border-radius: 100px;
}
.exp-list { padding-left: 18px; }
.exp-list li { font-size: .88rem; color: var(--text-m); line-height: 1.75; margin-bottom: 6px; }
.exp-list li::marker { color: var(--blue); }

/* ─── PROJECTS ─── */
.proj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 18px; margin-top: 36px; }
.proj-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r);
  padding: 24px; display: flex; flex-direction: column; gap: 12px;
  box-shadow: var(--shadow); transition: box-shadow .2s, transform .2s;
}
.proj-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.proj-top { display: flex; align-items: flex-start; gap: 12px; }
.proj-ico {
  width: 42px; height: 42px; border-radius: 10px; background: var(--blue-l);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.proj-meta { flex: 1; }
.proj-ctx { font-family: 'JetBrains Mono', monospace; font-size: .64rem; color: var(--text-l); letter-spacing: .5px; text-transform: uppercase; margin-bottom: 3px; }
.proj-name { font-family: 'Sora', sans-serif; font-weight: 700; font-size: .93rem; color: var(--text); }
.proj-desc { font-size: .81rem; color: var(--text-m); line-height: 1.65; flex: 1; }
.proj-tech { display: flex; flex-wrap: wrap; gap: 5px; }
.t-tag { padding: 3px 9px; background: var(--slate-m); border-radius: 100px; font-size: .67rem; color: var(--text-m); font-family: 'JetBrains Mono', monospace; }

/* ─── SKILLS ─── */
.sk-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 12px; margin-top: 36px; }
.sk-card { background: #fff; border: 1px solid var(--border); border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow); transition: box-shadow .2s; }
.sk-card:hover { box-shadow: var(--shadow-lg); }
.sk-trigger {
  display: flex; align-items: center; gap: 12px; padding: 16px 20px;
  cursor: pointer; font-weight: 600; font-size: .87rem; color: var(--text); transition: background .15s;
}
.sk-trigger:hover { background: var(--slate-l); }
.sk-icon { font-size: 1.1rem; flex-shrink: 0; }
.sk-label { flex: 1; }
.sk-plus { font-size: .85rem; color: var(--text-l); transition: transform .2s; }
.sk-card.open .sk-plus { transform: rotate(45deg); color: var(--blue); }
.sk-body { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.sk-card.open .sk-body { max-height: 300px; }
.sk-inner { padding: 16px 20px 20px; border-top: 1px solid var(--border); background: var(--slate-l); }
.sk-detail { font-size: .81rem; color: var(--text-m); line-height: 1.65; margin-bottom: 12px; }
.drive-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 13px; border: 1.5px solid var(--blue); color: var(--blue);
  border-radius: 7px; font-size: .73rem; font-weight: 600;
  font-family: 'JetBrains Mono', monospace; transition: background .15s; margin: 3px 5px 3px 0;
}
.drive-link:hover { background: var(--blue-l); }

/* ─── CERTS ─── */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; margin-top: 36px; }
.cert-card {
  background: #fff; border: 1px solid var(--border); border-top: 3px solid var(--blue);
  border-radius: var(--r); padding: 22px 24px; display: flex; flex-direction: column; gap: 8px;
  box-shadow: var(--shadow); transition: box-shadow .2s, transform .2s;
}
.cert-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.cert-issuer { font-family: 'JetBrains Mono', monospace; font-size: .67rem; color: var(--purple); text-transform: uppercase; letter-spacing: 1.5px; }
.cert-name { font-family: 'Sora', sans-serif; font-weight: 700; font-size: .9rem; color: var(--text); }
.cert-desc { font-size: .78rem; color: var(--text-m); line-height: 1.6; }

/* ─── FOOTER ─── */
.footer { background: var(--text); color: #e2e8f0; padding: 56px 7%; text-align: center; }
.footer-logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; background: var(--blue); border-radius: 10px;
  font-family: 'Sora', sans-serif; font-weight: 800; font-size: .75rem; color: #fff; margin: 0 auto 14px;
}
.footer-name { font-family: 'Sora', sans-serif; font-weight: 700; font-size: 1rem; color: #fff; margin-bottom: 4px; }
.footer-role { font-size: .8rem; color: #94a3b8; margin-bottom: 18px; }
.footer-links { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.footer-links a { font-size: .79rem; color: #93c5fd; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-links span { color: #334155; }
.footer-copy { font-size: .7rem; color: #475569; }

/* ═══════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════ */
@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .hero-right { display: none; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .mob-btn { display: flex; }
  .main { margin-left: 0; }
  .hero-left { padding: 80px 5% 60px; }
  .section { padding: 60px 5%; }
  .hero-stats { gap: 16px; }
  .footer-links { flex-direction: column; gap: 8px; }
  .footer-links span { display: none; }
}