/* ════════════════════════════════════════
   RESET
════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ════════════════════════════════════════
   LIGHT THEME
════════════════════════════════════════ */
:root,
[data-theme="light"] {
  --bg:           #ffffff;
  --bg2:          #f4f7fd;
  --bg3:          #e8edf8;
  --sb-bg:        #0d2853;
  --sb-bg2:       #081e3f;
  --sb-acc:       #4fa3ff;
  --sb-text:      #c4d4ee;
  --sb-text2:     #7fa0cc;
  --sb-text3:     #3f5f8a;
  --border:       #dde4f0;
  --border2:      #bfcde4;
  --text:         #111c35;
  --text2:        #3d4f70;
  --text3:        #7d8eaa;
  --accent:       #1755c8;
  --accent2:      #0c9e88;
  --accent3:      #7040b0;
  --hl:           rgba(23,85,200,.05);
  --card-bg:      #ffffff;
  --tag-bg:       #f4f7fd;
  --shadow-card:  0 2px 12px rgba(23,85,200,.07);
  --toggle-bg:    #e8edf8;
}

/* ════════════════════════════════════════
   DARK THEME
════════════════════════════════════════ */
[data-theme="dark"] {
  --bg:           #0f0f11;
  --bg2:          #161619;
  --bg3:          #1e1e23;
  --sb-bg:        #161619;
  --sb-bg2:       #0f0f11;
  --sb-acc:       #c8a96e;
  --sb-text:      #e8e4dd;
  --sb-text2:     #9a9690;
  --sb-text3:     #615e59;
  --border:       rgba(255,255,255,.07);
  --border2:      rgba(255,255,255,.13);
  --text:         #e8e4dd;
  --text2:        #9a9690;
  --text3:        #615e59;
  --accent:       #c8a96e;
  --accent2:      #7fb5a8;
  --accent3:      #a87b9e;
  --hl:           rgba(200,169,110,.08);
  --card-bg:      #161619;
  --tag-bg:       #1e1e23;
  --shadow-card:  0 2px 16px rgba(0,0,0,.4);
  --toggle-bg:    #1e1e23;
}

/* ════════════════════════════════════════
   TRANSITIONS
════════════════════════════════════════ */
body, .sidebar, .pub-card, .project-card, .skill-card,
.teaching-item, .contact-box, .news-item {
  transition: background-color .3s, border-color .3s, color .3s;
}

/* ════════════════════════════════════════
   BASE
════════════════════════════════════════ */
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 16px;
  line-height: 1.75;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .72; }

.layout { display: flex; min-height: 100vh; }

/* ════════════════════════════════════════
   THEME TOGGLE
════════════════════════════════════════ */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: var(--toggle-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 2px 12px rgba(0,0,0,.15);
  transition: all .25s;
}
.theme-toggle:hover { transform: scale(1.1); box-shadow: 0 4px 20px rgba(0,0,0,.2); }

.icon-sun, .icon-moon { transition: opacity .2s, transform .2s; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: block; }

/* ════════════════════════════════════════
   SIDEBAR
════════════════════════════════════════ */
.sidebar {
  width: 280px;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  background: var(--sb-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
}
.sidebar-inner { padding: 40px 28px 32px; flex: 1; display: flex; flex-direction: column; }

.avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  background: var(--sb-bg2);
  border: 2px solid rgba(255,255,255,.15);
  box-shadow: 0 0 0 5px rgba(79,163,255,.1);
  overflow: hidden;
  margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 2rem;
  color: var(--sb-acc);
  letter-spacing: .05em;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

.sidebar-name  { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 1.35rem; font-weight: 600; line-height: 1.3; color: #fff; margin-bottom: 6px; }
.sidebar-title { font-size: .77rem; color: var(--sb-text2); line-height: 1.5; margin-bottom: 4px; }
.sidebar-affil { font-size: .74rem; color: var(--sb-text3); font-style: italic; margin-bottom: 20px; }

.social-links { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.social-links a {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .71rem; font-family: 'DM Mono', monospace;
  color: var(--sb-text2);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 3px; padding: 4px 9px;
  transition: all .2s;
}
.social-links a:hover { color: var(--sb-acc); border-color: rgba(255,255,255,.25); opacity: 1; }

.nav-label { font-family: 'DM Mono', monospace; font-size: .64rem; letter-spacing: .13em; color: var(--sb-text3); text-transform: uppercase; margin-bottom: 10px; margin-top: 4px; }
.sidebar-nav { list-style: none; margin-bottom: 28px; }
.sidebar-nav li a {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px; border-radius: 6px;
  font-size: .81rem; color: var(--sb-text2);
  transition: all .2s; font-weight: 300;
}
.sidebar-nav li a:hover { color: #fff; background: rgba(255,255,255,.06); opacity: 1; }
.sidebar-nav li a.active {
  color: var(--sb-acc);
  background: rgba(255,255,255,.06);
  border-left: 2px solid var(--sb-acc);
  padding-left: 8px; opacity: 1;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: .67rem; color: var(--sb-text3); font-family: 'DM Mono', monospace;
}

/* ════════════════════════════════════════
   MAIN
════════════════════════════════════════ */
.main { margin-left: 280px; flex: 1; max-width: 860px; padding: 60px 64px 100px; }

/* Sections */
.section { margin-bottom: 72px; opacity: 0; transform: translateY(16px); animation: fadeUp .5s forwards; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }
.section:nth-child(1){animation-delay:.05s} .section:nth-child(2){animation-delay:.12s}
.section:nth-child(3){animation-delay:.18s} .section:nth-child(4){animation-delay:.24s}
.section:nth-child(5){animation-delay:.30s} .section:nth-child(6){animation-delay:.36s}
.section:nth-child(7){animation-delay:.42s} .section:nth-child(8){animation-delay:.48s}

.section-header { display: flex; align-items: baseline; gap: 16px; margin-bottom: 28px; }
.section-title { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 1.7rem; font-weight: 600; color: var(--text); letter-spacing: -.01em; }
.section-line { flex: 1; height: 1px; background: var(--border); }

/* ════════════════════════════════════════
   HERO BANNER
════════════════════════════════════════ */
.hero { padding: 0 0 48px; border-bottom: 1px solid var(--border); margin-bottom: 64px; }

.hero-banner {
  position: relative;
  width: 100%;
  height: clamp(110px, 22vw, 182px);
  border-radius: 10px;
  overflow: hidden;
  background: linear-gradient(135deg, #0d2853 0%, #1755c8 58%, #0c9e88 100%);
  background-size: cover;
  background-position: center;
}

.hero-eyebrow { font-family: 'DM Mono', monospace; font-size: .71rem; letter-spacing: .15em; color: var(--accent); text-transform: uppercase; margin-bottom: 16px; margin-top: 16px; }
.hero-name { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 3.4rem; font-weight: 300; line-height: 1.1; color: var(--text); margin-bottom: 12px; }
.hero-name em { font-style: italic; color: var(--accent); }
.hero-sub { font-size: 1rem; color: var(--text2); margin-bottom: 28px; font-weight: 300; }
.hero-links { display: flex; flex-wrap: wrap; gap: 10px; }

/* ════════════════════════════════════════
   BUTTONS
════════════════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 6px;
  font-family: 'DM Mono', monospace; font-size: .74rem;
  cursor: pointer; transition: all .2s; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; font-weight: 500; box-shadow: 0 2px 10px rgba(23,85,200,.2); }
.btn-primary:hover { opacity: .85; }
.btn-ghost { background: transparent; border-color: var(--border2); color: var(--text2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); opacity: 1; }

/* ════════════════════════════════════════
   BIO
════════════════════════════════════════ */
.bio-text { font-size: .97rem; color: var(--text2); line-height: 1.85; max-width: 680px; }
.bio-text strong { color: var(--text); }
.bio-text em { color: var(--accent2); font-style: italic; }
.bio-text a { color: var(--accent); }

/* ════════════════════════════════════════
   TAGS
════════════════════════════════════════ */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-family: 'DM Mono', monospace; font-size: .7rem; padding: 4px 10px; border-radius: 3px; background: var(--tag-bg); border: 1px solid var(--border); color: var(--text2); letter-spacing: .03em; }
.tag.accent { border-color: rgba(200,169,110,.3); color: var(--accent); background: rgba(200,169,110,.06); }
.tag.teal   { border-color: rgba(127,181,168,.3); color: var(--accent2); background: rgba(127,181,168,.06); }
.tag.mauve  { border-color: rgba(168,123,158,.3); color: var(--accent3); background: rgba(168,123,158,.06); }
[data-theme="light"] .tag.accent { border-color: rgba(23,85,200,.22); color: var(--accent); background: rgba(23,85,200,.05); }
[data-theme="light"] .tag.teal   { border-color: rgba(12,158,136,.22); color: var(--accent2); background: rgba(12,158,136,.05); }
[data-theme="light"] .tag.mauve  { border-color: rgba(112,64,176,.22); color: var(--accent3); background: rgba(112,64,176,.05); }

/* ════════════════════════════════════════
   NEWS
════════════════════════════════════════ */
.news-list { display: flex; flex-direction: column; }
.news-item { display: grid; grid-template-columns: 80px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border); align-items: baseline; }
.news-item:first-child { border-top: 1px solid var(--border); }
.news-date { font-family: 'DM Mono', monospace; font-size: .7rem; color: var(--text3); padding-top: 2px; }
.news-text { font-size: .88rem; color: var(--text2); line-height: 1.6; }
.news-text strong { color: var(--text); }
.news-text em { color: var(--accent2); }

/* ════════════════════════════════════════
   PUBLICATIONS
════════════════════════════════════════ */
.pub-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.filter-btn { font-family: 'DM Mono', monospace; font-size: .7rem; padding: 4px 12px; border-radius: 3px; border: 1px solid var(--border); background: transparent; color: var(--text2); cursor: pointer; transition: all .2s; letter-spacing: .04em; }
.filter-btn:hover, .filter-btn.active { border-color: var(--accent); color: var(--accent); }
.pub-list { display: flex; flex-direction: column; gap: 20px; }

.pub-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: 22px 24px; transition: border-color .2s, box-shadow .2s; position: relative; }
.pub-card:hover { border-color: var(--border2); box-shadow: var(--shadow-card); }
.pub-card.highlight { border-color: rgba(200,169,110,.25); background: var(--hl); }
.pub-card.highlight::before { content: '★ Featured'; position: absolute; top: -1px; right: 14px; font-family: 'DM Mono', monospace; font-size: .62rem; color: var(--accent); background: var(--card-bg); padding: 0 8px; border: 1px solid rgba(200,169,110,.3); border-top: none; border-radius: 0 0 4px 4px; letter-spacing: .06em; }
[data-theme="light"] .pub-card.highlight { border-color: rgba(23,85,200,.25); }
[data-theme="light"] .pub-card.highlight::before { background: #fff; border-color: rgba(23,85,200,.2); }

.pub-badge { display: inline-block; font-family: 'DM Mono', monospace; font-size: .62rem; letter-spacing: .06em; text-transform: uppercase; padding: 2px 8px; border-radius: 2px; margin-bottom: 10px; }
.badge-conference { background: rgba(127,181,168,.12); color: var(--accent2); border: 1px solid rgba(127,181,168,.25); }
.badge-journal    { background: rgba(200,169,110,.12); color: var(--accent);  border: 1px solid rgba(200,169,110,.25); }
.badge-workshop   { background: rgba(168,123,158,.12); color: var(--accent3); border: 1px solid rgba(168,123,158,.25); }
.badge-preprint   { background: var(--tag-bg); color: var(--text3); border: 1px solid var(--border); }
[data-theme="light"] .badge-conference { background: rgba(12,158,136,.08); color: var(--accent2); border-color: rgba(12,158,136,.22); }
[data-theme="light"] .badge-journal    { background: rgba(23,85,200,.08);  color: var(--accent);  border-color: rgba(23,85,200,.22); }
[data-theme="light"] .badge-workshop   { background: rgba(112,64,176,.08); color: var(--accent3); border-color: rgba(112,64,176,.22); }

.pub-title { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 1.12rem; font-weight: 600; color: var(--text); line-height: 1.4; margin-bottom: 6px; }
.pub-authors { font-size: .82rem; color: var(--text2); margin-bottom: 4px; }
.pub-authors .me { color: var(--text); font-weight: 400; text-decoration: underline; text-decoration-color: var(--border2); }
.pub-venue { font-size: .8rem; color: var(--text3); font-style: italic; margin-bottom: 12px; }
.pub-venue .year { font-style: normal; font-family: 'DM Mono', monospace; font-size: .74rem; color: var(--accent); margin-left: 5px; }
.pub-abstract { font-size: .82rem; color: var(--text3); line-height: 1.7; margin-bottom: 14px; display: none; }
.pub-abstract.visible { display: block; }
.pub-footer { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pub-link { font-family: 'DM Mono', monospace; font-size: .68rem; color: var(--text2); border: 1px solid var(--border); border-radius: 3px; padding: 3px 9px; display: inline-flex; align-items: center; gap: 4px; transition: all .2s; }
.pub-link:hover { color: var(--accent); border-color: var(--accent); opacity: 1; }
.pub-link.pdf-link { color: var(--accent); border-color: rgba(200,169,110,.3); }
[data-theme="light"] .pub-link.pdf-link { border-color: rgba(23,85,200,.28); }
.pub-tags { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }
.abstract-toggle { background: none; border: 1px solid var(--border); border-radius: 3px; cursor: pointer; font-family: 'DM Mono', monospace; font-size: .68rem; color: var(--text3); transition: color .2s; padding: 3px 9px; }
.abstract-toggle:hover { color: var(--text2); }

/* ════════════════════════════════════════
   PROJECTS
════════════════════════════════════════ */
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.project-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: 22px; transition: all .2s; display: flex; flex-direction: column; }
.project-card:hover { border-color: var(--border2); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.project-status { font-family: 'DM Mono', monospace; font-size: .62rem; letter-spacing: .08em; margin-bottom: 10px; display: inline-flex; align-items: center; gap: 5px; }
.project-status::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent2); }
.project-status.research::before { background: var(--accent3); }
.project-title { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 1.15rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.project-subtitle { font-size: .78rem; color: var(--accent); font-style: italic; margin-bottom: 10px; }
.project-metric { font-family: 'DM Mono', monospace; font-size: .68rem; color: var(--accent2); margin-bottom: 10px; padding: 3px 8px; background: rgba(127,181,168,.08); border: 1px solid rgba(127,181,168,.18); border-radius: 3px; display: inline-block; }
[data-theme="light"] .project-metric { background: rgba(12,158,136,.06); border-color: rgba(12,158,136,.18); }
.project-desc { font-size: .83rem; color: var(--text2); line-height: 1.7; flex: 1; margin-bottom: 16px; }
.project-desc strong { color: var(--text); }
.project-footer { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

/* ════════════════════════════════════════
   TEACHING
════════════════════════════════════════ */
.teaching-list { display: flex; flex-direction: column; }
.teaching-item { display: grid; grid-template-columns: 1fr auto; gap: 12px; padding: 16px 0; border-bottom: 1px solid var(--border); align-items: start; }
.teaching-item:first-child { border-top: 1px solid var(--border); }
.teaching-course { font-size: .92rem; color: var(--text); font-family: 'Cormorant Garamond', Georgia, serif; font-weight: 600; margin-bottom: 3px; }
.teaching-meta { font-size: .78rem; color: var(--text2); }
.teaching-level { font-size: .74rem; color: var(--text3); font-family: 'DM Mono', monospace; margin-top: 2px; }
.teaching-hours { font-family: 'DM Mono', monospace; font-size: .72rem; color: var(--accent); white-space: nowrap; padding-top: 3px; }

/* ════════════════════════════════════════
   CONTACT
════════════════════════════════════════ */
.contact-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 6px; padding: 32px 36px; display: flex; gap: 32px; align-items: flex-start; }
.contact-intro { flex: 1; font-size: .92rem; color: var(--text2); line-height: 1.8; }
.contact-intro strong { color: var(--text); }
.contact-info { flex-shrink: 0; display: flex; flex-direction: column; gap: 10px; }
.contact-info a { display: flex; align-items: center; gap: 8px; font-family: 'DM Mono', monospace; font-size: .74rem; color: var(--text2); transition: color .2s; }
.contact-info a:hover { color: var(--accent); opacity: 1; }

/* ════════════════════════════════════════
   ORNAMENT
════════════════════════════════════════ */
.ornament { text-align: center; color: var(--text3); font-size: .9rem; letter-spacing: .4em; margin: 48px 0; user-select: none; }

/* ════════════════════════════════════════
   MOBILE HEADER
════════════════════════════════════════ */
.mobile-header { display: none; position: sticky; top: 0; background: var(--sb-bg); border-bottom: 1px solid rgba(255,255,255,.08); padding: 14px 20px; align-items: center; justify-content: space-between; z-index: 200; }
.mobile-name { font-family: 'Cormorant Garamond', Georgia, serif; font-size: 1rem; color: #fff; }
.hamburger { background: none; border: none; cursor: pointer; display: flex; flex-direction: column; gap: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--sb-text2); border-radius: 2px; }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 99; }

/* ════════════════════════════════════════
   RESPONSIVE — TABLET & MOBILE
════════════════════════════════════════ */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: transform .25s; }
  .sidebar.open { transform: none; }
  .sidebar-overlay.open { display: block; }
  .mobile-header { display: flex; }
  .main { margin-left: 0; padding: 24px 24px 80px; }
  .project-grid { grid-template-columns: 1fr; }
  .contact-box { flex-direction: column; }
  .hero-name { font-size: 2.4rem; }
  .theme-toggle { bottom: 16px; right: 16px; }

  /* ── Banner mobile ── */
  .hero-banner {
  height: auto;         
  background-size: 100% auto;
  aspect-ratio: auto;     
}
}

@media (max-width: 480px) {
  .hero-banner {
    height: clamp(80px, 45vw, 120px);
    border-radius: 6px;
  }

  .hero-name { font-size: 2rem; }
  .hero-eyebrow { font-size: .65rem; }
  .hero-links { gap: 6px; }
  .btn { padding: 6px 12px; font-size: .68rem; }

  /* News : une seule colonne sur très petit écran */
  .news-item { grid-template-columns: 56px 1fr; gap: 10px; }

  /* Pub tags masqués sur petit écran pour ne pas déborder */
  .pub-tags { display: none; }
}

/* ════════════════════════════════════════
   SCROLLBAR
════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 3px; }