/*
  Minimal, pleasant typography + layout for a personal portfolio.
  Uses a comfortable reading width, soft colors, and subtle shadows.
*/

:root {
  --bg: #ffffff;
  --text: #111318;
  --muted: #6b7280;
  --accent: #7c3aed; /* soft purple */
  --card: #f7f7fb;
  --border: #e6e7ee;
  --strong: #0b0c10;
}

/* Dark theme variables */
[data-theme="dark"] {
  --bg: #1c1c1c;
  --text: #e5e7eb;
  --muted: #9aa0aa;
  --accent: #a78bfa;
  --card: #12151d;
  --border: #1f2430;
  --strong: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family:"Roboto", sans-serif;
  line-height: 1.6;
}

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

.container {
  max-width: 1000px;
  padding: 64px 24px 72px 24px;
  margin: 0 auto;
}

.site-header h1 {
  font-size: 46px;
  letter-spacing: -0.02em;
  margin: 0 0 8px 0;
  font-weight: 200; /* keep heading normal so only .emph is bold */
}

.site-header .emph { font-weight: 800; }

.site-header .lede {
  margin: 0 0 40px 0;
  color: var(--muted);
  font-style: italic;
  font-size: 18px;
}

.site-footer {
  margin-top: 64px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(17,19,24,0.06) 100%);
}

.site-footer .container { padding: 36px 24px 48px; }

.site-footer .lede {
  margin: 0;
  color: var(--muted);
  text-align: center;
  font-size: 14px;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 56px;
  grid-template-areas: 'content sidebar';
}

/* Content */

.intro p { margin: 0 0 18px 0; }

.publications h2, .experience h2, .education h2 {
  font-size: 22px;
  margin: 36px 0 16px 0;
  font-weight: 700;
}

.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}

.pub-list li {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.pub-date { color: var(--muted); font-variant-numeric: tabular-nums; }

.pub-title { color: var(--text); }
.pub-title a { color: var(--accent); }
.pub-title a:hover { color: var(--accent); }

/* Experience */
.experience-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}

.experience-list > li { border-bottom: 1px solid var(--border); }

.experience-list summary {
  list-style: none;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 16px 0;
  cursor: pointer;
  align-items: baseline;
}

.experience-list summary::-webkit-details-marker { display: none; }

.experience-date { color: var(--muted); font-variant-numeric: tabular-nums; }
.experience-title { color: var(--strong); font-weight: 600; }

.experience-list details[open] summary .experience-title { color: var(--accent); }

.exp-details {
  padding: 0 0 18px 0;
}

.exp-details ul { margin: 0; padding-left: 18px; color: var(--text); }
.exp-details li { margin: 8px 0; }

/* Education */
.education-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
}

.education-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.education-date { color: var(--muted); font-variant-numeric: tabular-nums; }
.education-title { color: var(--text); }

/* Sidebar */
.sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 32px;
  align-self: start;
}

.profile-pic {
  width: 100%;
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 6px 16px rgba(17,19,24,0.08);
  display: block;
}

.contact {
  margin-top: 14px;
  color: var(--text);
  font-style: normal;
}

.contact div { margin: 2px 0; }

/* Email row with copy action */
.email-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.email-link { text-decoration: none; }
.email-link:hover { text-decoration: none; }

.copy-email {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.copy-email:hover { color: var(--accent); }
.copy-email:active { transform: scale(0.98); }

/* Social icons */
.social-icons {
  display: flex;
  gap: 16px;
  margin-top: 12px;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.icon:hover { color: var(--accent); }

.icon .glyph {
  display: inline-block;
  font-size: 28px; /* FA icon size */
  line-height: 1;
  fill: currentColor;
}

.icon .monogram {
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.02em;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial;
}

/* Responsive */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      'sidebar'
      'content';
  }
  .sidebar { position: static; }
  .experience-list summary, .education-list li, .pub-list li { grid-template-columns: 92px 1fr; }
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0,0,0,0.10);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.14);
}

.theme-toggle svg { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Fallback: if no explicit theme set, respect system preference */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .icon-moon { display: block; }
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle .icon-sun { display: block; }
}