/* Modern minimal theme */

:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #6b7280;
  --accent: #111111; /* monochrome accent for minimal look */
  --accent-ink: #000000;
  --border: rgba(0,0,0,0.10);
  --card: #ffffff;

  --font-sans: Georgia, "Times New Roman", Times, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --radius: 6px;
  --container: 720px;
}

[data-theme="dark"] {
  --bg: #0c0e12;
  --text: #e5e7eb;
  --muted: #9aa3af;
  --accent: #60a5fa;
  --accent-ink: #2563eb;
  --border: rgba(255,255,255,0.12);
  --card: #0f1218;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-sans);
  line-height: 1.65;
}

/* Links */
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-ink); text-decoration: underline; }

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

/* Header / Navbar */
.site-header { position: sticky; top: 0; background: var(--bg); z-index: 50; backdrop-filter: saturate(180%) blur(6px); }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--border); }
.navbar-brand { font-weight: 700; font-size: 1.25rem; color: var(--text); }
.navbar-nav { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.navbar-nav a { color: var(--text); font-weight: 500; }
.navbar-nav a.active { color: var(--accent); }
.theme-toggle { border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.theme-toggle:hover { border-color: var(--accent); }
/* Hide navbar when not used */
.site-header, .navbar { display: none; }

/* Hero */
.hero { display: grid; grid-template-columns: 140px 1fr; gap: 24px; align-items: center; padding: 28px 0 8px; }
.profile-img { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); filter: grayscale(10%); }
.profile-name { font-size: 2.25rem; line-height: 1.2; margin: 0 0 6px; }
.profile-desc { color: var(--muted); margin: 0 0 8px; }
.profile-links { display: flex; gap: 14px; margin-top: 10px; }
.profile-links a { color: var(--muted); font-size: 1.2rem; }
.profile-links a:hover { color: var(--accent); }

/* Sections */
.section { padding: 18px 0 8px; }
h2 { font-size: 1.5rem; margin: 34px 0 12px; font-weight: 700; }
p { margin: 10px 0; }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.timeline-item { display: grid; grid-template-columns: 160px 1fr; gap: 18px; padding: 12px 0 12px 14px; border-left: 2px solid var(--border); border-radius: 0; background: transparent; }
.timeline-meta { color: var(--muted); font-variant-numeric: tabular-nums; }
.item-title { margin: 0 0 4px; font-size: 1.05rem; }
.item-desc { margin: 0; color: var(--muted); }
/* Logos + headers inside timeline items */
.item-header { display: flex; align-items: center; gap: 10px; margin: 0 0 4px; }
.timeline-logo { width: 22px; height: 22px; border-radius: 4px; object-fit: contain; filter: grayscale(100%) contrast(0.9); opacity: 0.85; mix-blend-mode: multiply; }
.item-company { color: var(--muted); font-weight: 600; }

/* Projects (minimal) */
.projects { display: grid; gap: 10px; }
.project { display: grid; grid-template-columns: 1fr auto; gap: 12px; padding: 0; border: none; border-radius: 0; background: transparent; }
.project-title { margin: 0 0 4px; font-size: 1.05rem; }
.project-desc { margin: 0; color: var(--muted); }
.project-meta { display: flex; gap: 8px; align-items: start; }
.tag { color: var(--muted); font-size: .85rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding-top: 16px; color: var(--muted); text-align: center; font-size: .95rem; }

/* Progress bar injected by JS */
.progress-bar { position: fixed; top: 0; left: 0; height: 2px; background-color: var(--accent); z-index: 9999; width: 0%; transition: width 0.2s ease; }

/* Responsive */
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .profile-links { justify-content: center; }
  .timeline-item { grid-template-columns: 1fr; }
  .navbar-nav { display: none; }
}

/* Reference-inspired additions */
.header-row { display: grid; grid-template-columns: 140px 1fr; gap: 22px; align-items: center; margin: 8px 0 14px; }
.profile a { text-decoration: none; }
.profile-img-container { position: relative; width: 120px; height: 120px; border-radius: 50%; border: 1px solid var(--border); overflow: hidden; box-shadow: 0 1px 0 rgba(0,0,0,.02); }
.spinner { position: absolute; inset: 0; display: grid; place-items: center; }
.spinner:after { content: ""; width: 20px; height: 20px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.top-desc .header { margin: 0; color: var(--muted); letter-spacing: .02em; text-transform: uppercase; font-weight: 600; }
.top-desc .name { margin: 6px 0 6px; font-size: 2rem; }
.top-desc .tagline { margin: 0; color: var(--muted); font-weight: 600; }
.saif-accent { color: var(--accent-ink); }

.row.links { display: flex; flex-wrap: wrap; gap: 0; margin: 10px 0 18px; }
.row.links a { font-weight: 500; font-size: 0.95rem; padding: 0; border: none; color: var(--text); text-transform: none; }
.row.links a + a::before { content: "•"; color: var(--muted); margin: 0 10px; }
.label-red,.label-orange,.label-green,.label-blue,.label-pink,.label-black,.label-linkedin,.label-twitter,.label-hf,.label-scholar { background: transparent !important; border-color: transparent !important; color: inherit !important; }

.section hr { border: none; border-top: 1px solid var(--border); margin: 18px 0 10px; }
.title { margin: 0; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 700; font-size: .9rem; }

.pub { margin: 12px 0; }
.pub > a { display: inline; padding: 0; border-radius: 0; font-weight: 700; }
.pub .author { margin: 6px 0 0; color: var(--muted); font-size: .95rem; }
.eq-note { font-size: .9rem; color: var(--muted); }

/* Modal banner like reference */
.modal { border: 1px solid var(--border); background: var(--card); border-radius: 12px; padding: 10px 12px; margin: 12px 0 18px; }
.modal-green { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }