/* ---------------------------------------------------------------
   custom.css — overrides loaded AFTER main.css
   --------------------------------------------------------------- */

/* 0. Theme variables ------------------------------------------- */
:root {
  --bg:           #ffffff;
  --bg-elev:     #f7f8fa;
  --text:         #1f2937;
  --text-strong: #111827;
  --muted:        #6b7280;
  --border:       #e5e7eb;
  --ring:         rgba(0, 0, 0, 0.06);
  --shadow:       0 8px 28px rgba(0, 0, 0, 0.12);
  --accent-red:  #cc0000;
  --accent-blue: #0A3BD9;
  --dot-halo:    #ffffff;
  --navbar-bg:   #fafafa;
}

[data-theme="dark"] {
  --bg:           #0f1419;
  --bg-elev:     #161b22;
  --text:         #d1d5db;
  --text-strong: #f3f4f6;
  --muted:        #9ca3af;
  --border:       #2a313c;
  --ring:         rgba(255, 255, 255, 0.08);
  --shadow:       0 8px 28px rgba(0, 0, 0, 0.5);
  --accent-red:  #ff6b6b;
  --accent-blue: #6aa3ff;
  --dot-halo:    #0f1419;
  --navbar-bg:   #11161d;
}

html, body {
  background-color: var(--bg) !important;
  color: var(--text);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* 1. Modern font stack ----------------------------------------- */
/* Editorial pairing: Georgia (serif) body + Inter (sans) headings */
body {
  font-family: Georgia, "Times New Roman", "Source Han Serif TC",
               "Noto Serif TC", serif;
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.title,
h1.title,
h1, h2, h3, h4, h5, h6 {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Helvetica Neue", Arial, sans-serif;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  color: var(--text-strong);
}

/* 2. Profile photo --------------------------------------------- */
.profile-img {
  width: 220px !important;
  height: 220px !important;
  max-width: 220px !important;
  border-radius: 50% !important;
  object-fit: cover;
  box-shadow: var(--shadow) !important;
  outline: 1px solid var(--ring);
  outline-offset: 4px;
}

/* 3. Name + subtitle hierarchy --------------------------------- */
h1.title {
  font-weight: 600;
  letter-spacing: -0.025em;
  font-size: 2.4rem;
  margin-top: 1.25rem;
}

.content > .col h6 {
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.55;
}

/* Section title ("news") refinements */
.news h1.title {
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem !important;
}

/* 4. News timeline --------------------------------------------- */
.news {
  position: relative;
  padding-left: 0;
}

.news-timeline {
  position: relative;
  margin-left: 0.6rem;
  padding-left: 1.75rem;
  border-left: 1px solid var(--border);
}

.news-timeline .news-item {
  position: relative;
  margin-bottom: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
}

.news-timeline .news-item::before {
  content: "";
  position: absolute;
  left: -1.95rem;
  top: 0.55rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-red);
  box-shadow: 0 0 0 3px var(--dot-halo), 0 0 0 4px var(--border);
}

.news-timeline .news-date {
  flex: 0 0 110px;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  padding-top: 0.35rem;
}

.news-timeline .news-body {
  flex: 1 1 0;
  min-width: 0;
  font-weight: 400;
  color: var(--text);
  line-height: 1.55;
}

.news-timeline .news-body p {
  margin-bottom: 0;
}

@media (max-width: 575.98px) {
  .news-timeline { padding-left: 1.25rem; }
  .news-timeline .news-item { display: block; }
  .news-timeline .news-item::before { left: -1.45rem; top: 0.4rem; }
  .news-timeline .news-date { display: block; margin-bottom: 0.25rem; }
}

/* 5. Dark mode adjustments to existing components -------------- */
[data-theme="dark"] .navbar.grey.lighten-5 {
  background-color: var(--navbar-bg) !important;
  border-bottom: 1px solid var(--border);
  box-shadow: none !important;
}

[data-theme="dark"] .navbar.navbar-light .navbar-nav .nav-item .nav-link,
[data-theme="dark"] .navbar.navbar-light .breadcrumb .nav-item .nav-link {
  color: var(--text);
}
[data-theme="dark"] .navbar.navbar-light .navbar-nav .nav-item .nav-link:hover {
  color: var(--text-strong);
}
[data-theme="dark"] .navbar-active a { color: var(--accent-red) !important; }
[data-theme="dark"] .navbar.navbar-light .navbar-toggler { color: var(--text); }
[data-theme="dark"] .navbar.navbar-light .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255,255,255,0.85)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}

/* About-page links keep accent color; brighten in dark mode */
[data-theme="dark"] .content a { color: var(--accent-blue); }
[data-theme="dark"] .news a { color: var(--accent-red); }

[data-theme="dark"] .card,
[data-theme="dark"] .list-group-item,
[data-theme="dark"] .table {
  background-color: var(--bg-elev) !important;
  color: var(--text);
  border-color: var(--border);
}

[data-theme="dark"] .card {
  box-shadow: none;
}

[data-theme="dark"] .card-title,
[data-theme="dark"] .cv .title,
[data-theme="dark"] .cv b,
[data-theme="dark"] .cv strong {
  color: var(--text-strong);
}

[data-theme="dark"] .table td,
[data-theme="dark"] .table th {
  border-color: var(--border);
}

[data-theme="dark"] .cv .item,
[data-theme="dark"] .cv .item-title,
[data-theme="dark"] .cv .subitem,
[data-theme="dark"] .cv li,
[data-theme="dark"] .cv p {
  color: var(--text);
}

[data-theme="dark"] .cv a b,
[data-theme="dark"] .cv a strong {
  color: var(--accent-blue);
}

[data-theme="dark"] .badge.grey {
  background-color: #2a313c !important;
  color: var(--text-strong) !important;
}

/* Publication label columns need a fixed usable width for long tags such as CMAME. */
.content > li,
.bibliography li {
  list-style: none;
}

.content > li .abbr .badge,
.bibliography .abbr .badge {
  box-sizing: border-box;
  min-width: 4.25rem;
  width: auto !important;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: anywhere;
  line-height: 1.2;
}

@media (min-width: 576px) {
  .content > li .abbr,
  .bibliography .abbr {
    flex: 0 0 4.75rem;
    max-width: 4.75rem;
  }

  .content > li .abbr + [class*="col-sm-11"],
  .bibliography .abbr + [class*="col-sm-11"] {
    flex: 1 1 0;
    max-width: calc(100% - 4.75rem);
  }
}

/* Progress bar */
[data-theme="dark"] progress#progress { background-color: transparent; }
[data-theme="dark"] progress#progress::-webkit-progress-bar { background: var(--bg-elev); }
[data-theme="dark"] progress#progress::-webkit-progress-value { background: var(--accent-red); }

/* Footer */
footer { color: var(--muted); }

/* 6. Theme toggle button --------------------------------------- */
#navbar > .container-fluid > .d-flex.align-items-center {
  gap: 0.5rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  padding: 0;
  margin-left: 0.5rem;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.theme-toggle:hover {
  background: var(--bg-elev);
  transform: translateY(-1px);
}
.theme-toggle:focus { outline: none; box-shadow: 0 0 0 3px var(--ring); }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
.theme-toggle svg { width: 18px; height: 18px; }

@media (min-width: 768px) {
  #navbar > .container-fluid > .row,
  #navbar > .container-fluid > .navbar-brand {
    order: 1;
  }

  #navbarNav {
    order: 2;
  }

  #navbar > .container-fluid > .d-flex.align-items-center {
    order: 3;
    margin-left: 0.5rem !important;
  }

  .theme-toggle {
    margin-left: 0;
  }
}

/* 7. SBM interactive demo (projects page) --------------------- */
.project-tag {
  display: inline-block;
  font-family: "Inter", sans-serif;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(31, 95, 211, 0.10);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  vertical-align: middle;
  margin-left: 0.5rem;
  position: relative;
  top: -0.15em;
}
[data-theme="dark"] .project-tag {
  background: rgba(106, 163, 255, 0.14);
}

.sbm-demo {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  align-items: flex-start;
  margin: 1.25rem 0 0.75rem;
  padding: 0.9rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.sbm-canvas-wrap {
  flex: 0 0 auto;
  max-width: 320px;
  width: 100%;
}

.sbm-canvas-wrap canvas {
  width: 100%;
  height: auto;
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.sbm-presets {
  display: flex;
  gap: 0.3rem;
  margin-top: 0.6rem;
  flex-wrap: wrap;
}
.sbm-presets button {
  font-family: "Inter", sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.sbm-presets button:hover {
  color: var(--text-strong);
  border-color: var(--accent-blue);
}
.sbm-presets button.opt {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
  background: rgba(31, 95, 211, 0.06);
}
[data-theme="dark"] .sbm-presets button.opt {
  background: rgba(106, 163, 255, 0.10);
}

.sbm-controls {
  flex: 1 1 240px;
  min-width: 220px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sbm-slider-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-family: "Inter", sans-serif;
}
.sbm-slider-row label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0;
}
.sbm-value {
  font-family: "SF Mono", Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  padding: 0.05rem 0.45rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.sbm-value.is-optimal {
  color: #047857;
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.08);
}
[data-theme="dark"] .sbm-value.is-optimal {
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
}

#sbm-lambda {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}
#sbm-lambda::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-blue);
  border: 2px solid var(--bg);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: transform 0.15s ease;
}
#sbm-lambda::-webkit-slider-thumb:hover { transform: scale(1.15); }
#sbm-lambda::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-blue);
  border: 2px solid var(--bg);
  cursor: pointer;
}

.sbm-legend {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.15rem;
  font-family: "Inter", sans-serif;
}
.sbm-legend-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.72rem;
  color: var(--text);
}
.sbm-legend-item strong {
  display: block;
  font-weight: 600;
  color: var(--text-strong);
  line-height: 1.25;
}
.sbm-legend-item p {
  margin: 0.05rem 0 0;
  font-size: 0.68rem;
  color: var(--muted);
}
.sbm-dot {
  display: inline-block;
  flex-shrink: 0;
  margin-top: 0.4rem;
  width: 10px;
  height: 3px;
  border-radius: 2px;
}
.sbm-dot.true      { background: var(--accent-blue); height: 3px; }
[data-theme="dark"] .sbm-dot.true { background: #6aa3ff; }
.sbm-dot.surrogate { background: #f59e0b; }

.sbm-tip {
  font-family: "Inter", sans-serif;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--muted);
  margin: 0.15rem 0 0;
  padding: 0.5rem 0.7rem;
  background: var(--bg);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 5px 5px 0;
}

@media (max-width: 720px) {
  .sbm-demo { flex-direction: column; }
  .sbm-canvas-wrap { max-width: 100%; }
}

/* Related publications inline pill row --------------------- */
.related-papers-inline {
  font-family: "Inter", sans-serif;
  font-size: 0.78rem;
  color: var(--muted);
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.5rem;
  line-height: 1.4;
}
.related-papers-inline > a {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding: 0.2rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.related-papers-inline > a:hover {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
  background: rgba(31, 95, 211, 0.06);
}
[data-theme="dark"] .related-papers-inline > a:hover {
  background: rgba(106, 163, 255, 0.10);
}