/* Nurşah Çelebi, MD — feuille de style.
   DA : bleus « médicaux », papier ECG en filigrane, sérieux + une pointe de décontraction
   (italique Instrument Serif, cartes flottantes, tracé ECG animé). */

:root {
  --navy:   #0a1f3c;
  --navy-2: #12305a;
  --blue:   #1f5fd1;
  --blue-2: #3d7ff0;
  --cyan:   #4fc3e8;
  --sky:    #bcdcf7;
  --ice:    #eef5fd;
  --paper:  #f8fbff;
  --line:   #d9e6f5;
  --ink:    #0f2340;
  --text:   #3a4d68;
  --muted:  #6b7f99;

  --serif: 'Instrument Serif', Georgia, serif;
  --sans:  'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, Menlo, monospace;

  --radius: 18px;
  --shadow: 0 1px 2px rgba(10,31,60,.05), 0 12px 32px -12px rgba(10,31,60,.16);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font: 400 16.5px/1.7 var(--sans); -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--ink); margin: 0; line-height: 1.15; }
h2 { font: 400 clamp(2.2rem, 4.5vw, 3.4rem)/1.05 var(--serif); letter-spacing: -.01em; }
h3 { font: 700 1.12rem/1.35 var(--sans); }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { width: min(1160px, 100% - 40px); margin-inline: auto; }
.mono { font: 500 .78rem/1.4 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--blue); margin: 0; }
.muted { color: var(--muted); margin: 0; }
.strong { color: var(--ink); font-weight: 600; margin: 0 0 .2em; }

.skip { position: absolute; left: -999px; top: 8px; background: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em; padding: .85em 1.5em; border-radius: 999px;
  font: 600 .95rem/1 var(--sans); border: 1.5px solid transparent; transition: transform .2s, background .2s, color .2s, border-color .2s;
  background: var(--blue); color: #fff;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--light { background: #fff; color: var(--navy); }
.btn--light:hover { background: var(--sky); }
.btn--outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn--outline:hover { border-color: #fff; background: rgba(255,255,255,.08); }

/* ---------- Barre du haut ---------- */
.topbar {
  position: fixed; inset: 0 0 auto; z-index: 50; transition: background .3s, box-shadow .3s;
  color: #fff;
}
.topbar.is-solid { background: rgba(248,251,255,.88); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); color: var(--ink); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: inherit; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center;
  font: 400 1.15rem/1 var(--serif); letter-spacing: .02em;
  background: linear-gradient(135deg, var(--blue-2), var(--cyan)); color: #fff;
}
.brand-name { font-weight: 700; font-size: 1rem; }
.brand-name em { font: italic 400 1.1rem var(--serif); opacity: .75; }
.menu { display: flex; gap: 4px; }
.menu a { color: inherit; font-weight: 600; font-size: .9rem; padding: 8px 14px; border-radius: 999px; opacity: .82; transition: opacity .2s, background .2s; }
.menu a:hover { text-decoration: none; opacity: 1; background: rgba(127,160,210,.16); }
.menu a.is-active { opacity: 1; background: rgba(79,195,232,.18); }
.burger { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #cfe0f5;
  background: radial-gradient(1100px 600px at 85% 20%, #1c4d96 0%, transparent 60%), linear-gradient(160deg, #0a1f3c 0%, #0d2a52 60%, #0a1f3c 100%);
  padding: 130px 0 120px;
}
/* Papier millimétré d'électrocardiogramme */
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(125,180,240,.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125,180,240,.10) 1px, transparent 1px),
    linear-gradient(rgba(125,180,240,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(125,180,240,.045) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 80%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font: 500 .8rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--cyan); margin-bottom: 26px; }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 0 rgba(79,195,232,.7); animation: pulse 1.6s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(79,195,232,.6); } 70% { box-shadow: 0 0 0 12px rgba(79,195,232,0); } 100% { box-shadow: 0 0 0 0 rgba(79,195,232,0); } }
.hero h1 { color: #fff; font: 400 clamp(3.2rem, 7.4vw, 6.2rem)/.95 var(--serif); letter-spacing: -.02em; }
.hero h1 em { color: var(--cyan); }
.hero-tagline { font-size: clamp(1.05rem, 1.6vw, 1.25rem); line-height: 1.6; max-width: 34em; margin: 26px 0 28px; color: #d6e5f7; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { padding: 6px 13px; border-radius: 999px; font-size: .85rem; font-weight: 600; background: var(--ice); color: var(--navy-2); border: 1px solid var(--line); }
.chips--dark li { background: rgba(255,255,255,.06); color: #e2edfa; border-color: rgba(160,200,245,.22); }

.hero-visual { position: relative; justify-self: center; width: min(420px, 100%); }
.portrait { position: relative; aspect-ratio: 1; }
.portrait-ring {
  position: absolute; inset: 6% 4% 0; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #6fb4f5 0%, #2d6fd6 45%, #173e7e 100%);
  box-shadow: 0 0 0 10px rgba(79,195,232,.08), 0 0 0 22px rgba(79,195,232,.05), 0 40px 80px -20px rgba(0,0,0,.5);
}
.portrait img {
  position: relative; width: 100%; height: 100%; object-fit: cover; object-position: center top;
  /* Le buste déborde du disque par le haut, coupé net en bas sur le cercle */
  clip-path: inset(-20% 0 0 0 round 0 0 50% 50%);
  border-radius: 0 0 50% 50%;
}
.float-card {
  position: absolute; background: rgba(255,255,255,.96); color: var(--ink); border-radius: 14px;
  padding: 12px 16px; box-shadow: 0 18px 40px -14px rgba(0,0,0,.45); font-size: .86rem; line-height: 1.35;
  animation: bob 6s ease-in-out infinite;
}
.float-card strong { display: block; font-size: .98rem; }
.float-card span:not(.mono) { color: var(--muted); }
.float-card .mono { font-size: .68rem; display: block; margin-bottom: 3px; }
.float-card--now { left: -12%; bottom: 12%; }
.float-card--loc { right: -6%; top: 8%; display: flex; align-items: center; gap: 8px; font-weight: 600; animation-delay: -3s; }
.float-card--loc svg { width: 18px; height: 18px; fill: none; stroke: var(--blue); stroke-width: 2; }
@keyframes bob { 50% { transform: translateY(-8px); } }

.ecg { position: absolute; left: 0; right: 0; bottom: 18px; height: 70px; opacity: .8; }
.ecg svg { width: 100%; height: 100%; }
.ecg path {
  fill: none; stroke: var(--cyan); stroke-width: 2; stroke-linejoin: round; vector-effect: non-scaling-stroke;
  stroke-dasharray: 1600; stroke-dashoffset: 1600; animation: trace 3.2s ease-out .3s forwards;
  filter: drop-shadow(0 0 6px rgba(79,195,232,.7));
}
@keyframes trace { to { stroke-dashoffset: 0; } }

/* ---------- Constantes (chiffres clés) ---------- */
.vitals { position: relative; margin-top: -44px; z-index: 2; }
.vitals-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); overflow: hidden; }
.vital { padding: 26px 26px 24px; border-right: 1px solid var(--line); }
.vital:last-child { border-right: 0; }
.vital-value { display: block; font: 400 2.6rem/1 var(--serif); color: var(--blue); margin-bottom: 8px; }
.vital-label { font-size: .88rem; line-height: 1.45; color: var(--text); }

/* ---------- Sections ---------- */
.section { padding: 110px 0; position: relative; }
.section--ice { background: var(--ice); }
.section--sky { background: linear-gradient(180deg, var(--paper) 0%, #e3f0fc 100%); }
.section-head { margin-bottom: 48px; }
.label { font: 500 .78rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--blue); margin: 0 0 16px; display: flex; align-items: center; gap: 12px; }
.label::before { content: ''; width: 28px; height: 2px; background: currentColor; border-radius: 2px; }
.label--light { color: var(--cyan); }
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: start; }
.split .section-head { margin: 0; position: sticky; top: 100px; }
.prose p { font-size: 1.08rem; }
.prose p:first-child { font-size: 1.28rem; line-height: 1.55; color: var(--ink); }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.card .card-title { font: 500 .78rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }

/* Timeline expérience */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ''; position: absolute; left: 7px; top: 10px; bottom: 10px; width: 2px; background: linear-gradient(var(--blue), var(--sky)); border-radius: 2px; }
.tl-item { position: relative; }
.tl-item + .tl-item { margin-top: 24px; }
.tl-dot { position: absolute; left: -34px; top: 34px; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--blue); }
.tl-item.is-current .tl-dot { background: var(--cyan); border-color: var(--blue); box-shadow: 0 0 0 6px rgba(79,195,232,.22); }
.card-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.tag { font-size: .8rem; font-weight: 700; color: var(--blue); background: var(--ice); border: 1px solid var(--line); padding: 4px 12px; border-radius: 999px; }
.card h3 { font-size: 1.35rem; margin-bottom: 10px; }
.card h3 .at { font: italic 400 1.35rem var(--serif); color: var(--muted); }
.ticks li { position: relative; padding-left: 28px; margin-top: 10px; }
.ticks li::before {
  content: ''; position: absolute; left: 0; top: .42em; width: 16px; height: 16px; border-radius: 50%;
  background: var(--ice) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.3l2.2 2.2 4.8-5' fill='none' stroke='%231f5fd1' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat;
}

/* Formation */
.card--edu { display: flex; gap: 18px; }
.card--edu + .card--edu { margin-top: 24px; }
.card--edu h3 { font-size: 1.2rem; margin: 6px 0 4px; }
.icon-badge { flex: none; width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, var(--blue), var(--blue-2)); }
.icon-badge svg { width: 26px; height: 26px; fill: none; stroke: #fff; stroke-width: 1.6; stroke-linejoin: round; }

.rows li { display: grid; grid-template-columns: 56px 1fr; gap: 14px; padding: 13px 0; border-top: 1px solid var(--line); }
.rows li:first-child { border-top: 0; padding-top: 0; }
.rows .mono { padding-top: 3px; }
.rows strong { display: block; color: var(--ink); font-weight: 600; line-height: 1.4; }
.rows span:not(.mono) { display: block; color: var(--muted); font-size: .92rem; }
.rows--2col { columns: 2; column-gap: 40px; }
.rows--2col li { break-inside: avoid; }
.rows--2col li:first-child { border-top: 0; }

/* Recherche */
.research { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 24px; }
.study {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px 28px;
  position: relative; overflow: hidden; transition: transform .25s, box-shadow .25s;
}
.study::after { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: linear-gradient(var(--blue), var(--cyan)); }
.study:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.study h3 { font: 400 1.45rem/1.25 var(--serif); margin-top: 12px; }
.training { margin-top: 4px; }

/* Langues */
.langs li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.langs li:first-child { border-top: 0; padding-top: 0; }
.langs strong { display: block; color: var(--ink); }
.langs span { font-size: .88rem; color: var(--muted); }
.meter { display: flex; gap: 4px; }
.meter i { width: 10px; height: 22px; border-radius: 3px; background: var(--line); }
.meter i.on { background: linear-gradient(var(--blue-2), var(--blue)); }

/* Off duty */
.chips--places { margin-top: 22px; }
.chips--places li { background: #fff; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; margin-top: 56px; }
.shot { position: relative; padding: 0; border: 0; border-radius: 14px; overflow: hidden; cursor: zoom-in; aspect-ratio: 4/5; background: var(--sky); }
.shot img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.shot:hover img { transform: scale(1.05); }
.shot-caption { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px 12px 10px; color: #fff; font-size: .82rem; text-align: left; background: linear-gradient(transparent, rgba(10,31,60,.8)); }

.viewer { position: fixed; inset: 0; z-index: 90; background: rgba(6,18,36,.94); display: flex; align-items: center; justify-content: center; }
.viewer[hidden] { display: none; }
.viewer-frame { margin: 0; max-width: 90vw; max-height: 88vh; text-align: center; }
.viewer-frame img { max-width: 90vw; max-height: 80vh; border-radius: 10px; margin: auto; }
.viewer-frame figcaption { color: #cfe0f5; margin-top: 12px; }
.viewer button { position: absolute; background: none; border: 0; color: #fff; font-size: 2.6rem; cursor: pointer; padding: 10px 18px; opacity: .8; }
.viewer button:hover { opacity: 1; }
.viewer-close { top: 10px; right: 10px; }
.viewer-prev { left: 10px; }
.viewer-next { right: 10px; }

/* Contact */
.contact { background: linear-gradient(160deg, #0a1f3c, #123a70); color: #cfe0f5; overflow: hidden; text-align: center; }
.contact-inner { position: relative; max-width: 760px; }
.contact .label { justify-content: center; }
.contact h2 { color: #fff; font-size: clamp(2.8rem, 6vw, 4.6rem); }
.contact-text { font-size: 1.15rem; margin: 18px auto 30px; max-width: 36em; }
.contact-mail { display: inline-block; font: italic 400 clamp(1.5rem, 3.6vw, 2.4rem)/1.2 var(--serif); color: #fff; border-bottom: 1px solid rgba(79,195,232,.5); padding-bottom: 4px; word-break: break-all; }
.contact-mail:hover { text-decoration: none; color: var(--cyan); border-color: var(--cyan); }
.contact-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

/* Footer */
.footer { background: #071630; color: #8ea6c6; font-size: .88rem; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 0; flex-wrap: wrap; }
.footer a { color: #b9cde6; }
.footer-pulse svg { width: 120px; height: 20px; display: block; }
.footer-pulse path { fill: none; stroke: var(--cyan); stroke-width: 1.5; opacity: .6; }

/* Pages simples (mentions légales) */
.page-head { background: linear-gradient(160deg, #0a1f3c, #0d2a52); padding: 140px 0 70px; position: relative; overflow: hidden; }
.page-head h1 { color: #fff; font: 400 clamp(2.4rem, 5vw, 3.8rem)/1 var(--serif); position: relative; }
.legal .card h2 { font-size: 1.8rem; margin: 26px 0 10px; }
.legal .card h2:first-child { margin-top: 0; }

/* ---------- Apparition au scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .ecg path { animation: none; stroke-dashoffset: 0; }
  .float-card, .kicker .dot { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 50px; }
  .hero-visual { width: min(360px, 82%); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split .section-head { position: static; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .vitals-grid { grid-template-columns: 1fr 1fr; }
  .vital:nth-child(2) { border-right: 0; }
  .vital:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .burger { display: flex; flex-direction: column; gap: 6px; background: none; border: 0; padding: 10px; cursor: pointer; color: inherit; }
  .burger span { width: 24px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .25s; }
  .burger[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .burger[aria-expanded="true"] span:last-child  { transform: translateY(-4px) rotate(-45deg); }
  .menu {
    position: absolute; top: 68px; left: 12px; right: 12px; flex-direction: column; gap: 2px; padding: 10px;
    background: #fff; border-radius: 16px; box-shadow: 0 20px 50px -10px rgba(10,31,60,.35);
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: .2s;
  }
  .menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .menu a { color: var(--ink); padding: 12px 14px; }
  .brand-name { font-size: .95rem; }
  .hero { padding: 108px 0 110px; }
  .section { padding: 76px 0; }
  .grid-2, .grid-3, .research { grid-template-columns: 1fr; }
  .rows--2col { columns: 1; }
  .rows--2col li:first-child { padding-top: 0; }
  .card { padding: 24px 20px; }
  .float-card--now { left: -4%; bottom: 4%; }
  .float-card--loc { right: -4%; top: 2%; }
  .timeline { padding-left: 26px; }
  .tl-dot { left: -26px; }
  .timeline::before { left: 7px; }
  .vital { padding: 20px 18px; }
  .vital-value { font-size: 2.1rem; }
  .footer-inner { justify-content: center; text-align: center; }
}
@media (max-width: 420px) {
  .vitals-grid { grid-template-columns: 1fr; }
  .vital { border-right: 0; border-bottom: 1px solid var(--line); }
  .vital:last-child { border-bottom: 0; }
}