/* ============================================================
   Flat Material Design layer  —  Alireza Moazeni
   Loaded last so it overrides the base template.
   ============================================================ */

:root {
  --md-primary: #1976d2;        /* Blue 700 */
  --md-primary-dark: #1565c0;   /* Blue 800 */
  --md-accent: #ff6d00;         /* Orange A700 */
  --md-bg: #f4f5f7;             /* canvas */
  --md-surface: #ffffff;        /* cards */
  --md-text: #212121;
  --md-text-secondary: #5f6368;
  --md-divider: #e0e0e0;

  --md-elev-1: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --md-elev-2: 0 3px 6px rgba(0,0,0,.12), 0 2px 4px rgba(0,0,0,.10);
  --md-elev-4: 0 2px 4px -1px rgba(0,0,0,.20), 0 4px 5px rgba(0,0,0,.14), 0 1px 10px rgba(0,0,0,.12);
  --md-elev-6: 0 3px 5px -1px rgba(0,0,0,.20), 0 6px 10px rgba(0,0,0,.14), 0 1px 18px rgba(0,0,0,.12);
}

/* ---- Base / typography (Roboto) ---- */
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--md-bg);
  color: var(--md-text);
  font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

p, a, li, td, th, tr, strong, span, em, button, conf {
  font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

p, li, td { font-size: 15.5px; color: var(--md-text); }

a { color: var(--md-primary); text-decoration: none; transition: color .15s ease; }
a:hover, a:focus { color: var(--md-accent); text-decoration: none; }

name {
  font-family: 'Roboto', sans-serif;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: .2px;
  color: var(--md-text);
}

heading {
  font-family: 'Roboto', sans-serif;
  font-size: 24px;
  font-weight: 500;
  color: var(--md-text);
}

papertitle {
  font-family: 'Roboto', sans-serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--md-text);
}
papertitle:hover { color: var(--md-primary); }

/* ---- Material app bar (top nav) ---- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 12px;
  height: 64px;
  padding: 0 24px;
  background: var(--md-primary);
  border-bottom: none;
  box-shadow: var(--md-elev-4);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.topnav .brand {
  font-family: 'Roboto', sans-serif;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: .3px;
  color: #fff;
}
.topnav .brand:hover { color: #fff; opacity: .92; }
.topnav .navlinks { display: flex; align-items: center; flex-wrap: wrap; }
.topnav .navlinks a {
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: rgba(255,255,255,.92);
  margin-left: 4px;
  padding: 8px 12px;
  border-radius: 4px;
  transition: background .15s ease, color .15s ease;
}
.topnav .navlinks a:hover { color: #fff; background: rgba(255,255,255,.16); }

/* ---- Page wrapper: transparent over the grey canvas ---- */
.container_onecolumn {
  max-width: 980px;
  margin: 24px auto 56px;
  padding: 0 16px;
  background: transparent;
  border: none;
  box-shadow: none;
}

/* ---- Hero card (about + photo) ---- */
.container {
  background: var(--md-surface);
  border-radius: 8px;
  box-shadow: var(--md-elev-1);
  padding: 8px;
  margin-bottom: 24px;
  grid-template-columns: 58% 42%;
}
.container .item { padding: 18px; }
.image img { border-radius: 12px; box-shadow: var(--md-elev-2); }

/* News lives in the hero card's left column */
#news { border-top: 1px solid var(--md-divider); padding-top: 16px; }
#news heading { font-size: 22px; }

/* ---- Section title (Publications) ---- */
#publications {
  text-align: left;
  padding: 6px 4px;
  margin-top: 6px !important;
  margin-bottom: 6px;
}
#publications heading { display: inline-block; }
#publications heading::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 8px;
  background: var(--md-primary);
  border-radius: 2px;
}

/* ---- Publication cards ---- */
hr { display: none; }
.container2 {
  background: var(--md-surface);
  border-radius: 8px;
  box-shadow: var(--md-elev-1);
  padding: 14px;
  margin: 0 auto 20px;
  max-width: 980px;
  grid-template-columns: 28% 72%;
  scroll-margin-top: 84px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.container2:hover { box-shadow: var(--md-elev-6); transform: translateY(-2px); }
.container2 .item { padding: 8px 14px; }
.image2 img { border-radius: 4px; box-shadow: var(--md-elev-1); }
.text2 p { color: var(--md-text-secondary); }

/* ---- Card sections (awards, experience, skills) ---- */
#honors,
#experience,
#skills {
  background: var(--md-surface);
  border-radius: 8px;
  box-shadow: var(--md-elev-1);
  padding: 22px 24px;
  margin-top: 24px !important;
}

/* ---- Material text button (BibTeX) ---- */
button.link, .bib-button {
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--md-primary);
  background: transparent;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background .15s ease, color .15s ease;
}
button.link:hover, .bib-button:hover {
  color: var(--md-primary-dark);
  background: rgba(25,118,210,.10);
}

/* code / bibtex block */
pre {
  background: #f5f7fa;
  border: 1px solid var(--md-divider);
  border-radius: 6px;
}

/* ---- TL;DR chip + line ---- */
.tldr-label {
  color: #fff;
  background: var(--md-primary);
  border-radius: 999px;
  letter-spacing: .04em;
}
.tldr-line {
  border-left: 3px solid var(--md-primary);
  background: rgba(25,118,210,.06);
  color: var(--md-text);
  border-radius: 0 6px 6px 0;
}

/* ---- Footer ---- */
.container_onecolumn table p { color: var(--md-text-secondary) !important; }

/* ---- FAB (back to top) ---- */
.back-to-top {
  background: var(--md-accent);
  color: #fff;
  width: 48px;
  height: 48px;
  box-shadow: var(--md-elev-6);
}
.back-to-top:hover { background: #f4511e; color: #fff; }

/* sticky app bar (64px) anchor offsets */
#about, #news, #publications, #experience, #skills, #honors { scroll-margin-top: 84px; }

/* ---- Section title underline (shared) ---- */
.sec-title { display: inline-block; }
.sec-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin-top: 8px;
  background: var(--md-primary);
  border-radius: 2px;
}

/* ---- Industry experience (timeline entries) ---- */
.exp-entry {
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--md-divider);
  margin-top: 18px;
  transition: border-color .15s ease;
}
.exp-entry:hover { border-left-color: var(--md-primary); }
.exp-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 2px 12px;
}
.exp-title { font-weight: 500; font-size: 16.5px; color: var(--md-text); }
.exp-date { font-size: 13px; color: var(--md-text-secondary); white-space: nowrap; }
.exp-org { font-size: 14.5px; color: var(--md-text-secondary); margin-top: 2px; }
.exp-list { margin: 8px 0 0; padding-left: 1.2em; }
.exp-list li { color: var(--md-text-secondary); margin-bottom: 5px; line-height: 1.55; }

/* ---- Skills (Material chips) ---- */
.skill-group { margin-top: 16px; }
.skill-group-title { font-weight: 500; font-size: 15px; color: var(--md-text); margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--md-primary-dark);
  background: rgba(25,118,210,.09);
  border: 1px solid rgba(25,118,210,.18);
  padding: 5px 12px;
  border-radius: 999px;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.chip:hover { background: var(--md-primary); color: #fff; border-color: var(--md-primary); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .topnav { height: auto; padding: 8px 14px; }
  .topnav .brand { font-size: 18px; }
  .topnav .navlinks a { margin-left: 2px; padding: 6px 8px; font-size: 12.5px; }
  .container { grid-template-columns: 100%; }
  .container .item { padding: 14px; }
  .container2 { grid-template-columns: 100%; }
  .container_onecolumn { padding: 0 10px; }
  .back-to-top { right: 16px; bottom: 16px; }
}