/* ---------- Design tokens ---------- */
:root {
  --bg: #FAFAF7;
  --ink: #1B1B18;
  --ink-soft: #726C60;
  --accent: #A8461D;
  --line: #E4E1D8;
  --pink: #C2185B;
  --header-bg: rgba(250, 250, 247, 0.88);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Work Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w: 780px;
  --side-pad: clamp(24px, 6vw, 64px);
}

/* ---------- Dark mode tokens ---------- */
:root[data-theme="dark"] {
  --bg: #15140F;
  --ink: #EDEAE0;
  --ink-soft: #9C978A;
  --accent: #E38A4E;
  --line: #322F26;
  --pink: #F48FB1;
  --header-bg: rgba(21, 20, 15, 0.88);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.4s ease;
}

a { color: inherit; }

/* ---------- Header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px var(--side-pad);
  position: sticky;
  top: 0;
  background: var(--header-bg);
  backdrop-filter: blur(6px);
  z-index: 10;
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s ease;
}

.site-header nav {
  display: flex;
  align-items: center;
}

/* ---------- Dark mode toggle ---------- */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-left: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  transition: border-color 0.3s ease, color 0.3s ease, transform 0.4s ease, background-color 0.4s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: rotate(20deg);
}

.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  display: block;
  height: 104px;
  width: auto;
}

.logo-img-dark { display: none; }
:root[data-theme="dark"] .logo-img-light { display: none; }
:root[data-theme="dark"] .logo-img-dark { display: block; }

.site-header nav a {
  text-decoration: none;
  margin-left: 28px;
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  transition: color 0.2s ease;
}

.site-header nav a:hover { color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 96px var(--side-pad) 48px;
}

.hero-intro {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.28;
  margin: 0;
}

.hero-intro strong { font-weight: 600; }

.hero-line-indent {
  display: block;
  font-family: var(--sans);
  font-weight: 400;
  margin-top: 24px;
  padding-left: 48px;
  font-size: clamp(16px, 2.2vw, 20px);
  line-height: 1.5;
}

.hero-line-indent strong { font-weight: 600; }

/* ---------- Timeline ---------- */
.timeline {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--side-pad) 64px;
  border-top: none;
  border-bottom: none;
}

.timeline-list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}

.timeline-list li:last-child { border-bottom: none; }

.timeline-date {
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.timeline-role { font-weight: 600; }

.timeline-company {
  color: var(--ink-soft);
  text-align: right;
}

/* ---------- Bio ---------- */
.bio {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 64px var(--side-pad);
}

.bio p {
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0 0 24px;
}

.bio p:last-child { margin-bottom: 0; }

.bio strong { color: var(--ink); font-weight: 600; }

/* ---------- Work ---------- */
.work {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 32px var(--side-pad) 80px;
}

.section-label {
  font-family: var(--serif);
  font-optical-sizing: auto;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin: 0 0 24px;
}

.project-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  text-decoration: none;
  padding: 28px 0;
  border-bottom: none;
  transition: padding-left 0.25s ease, color 0.25s ease;
}

.project-card:first-of-type { border-top: none; }

.project-card:hover {
  padding-left: 8px;
  color: var(--accent);
}

.project-card-thumb {
  flex-shrink: 0;
  width: 120px;
  height: 86px;
  object-fit: cover;
  border-radius: 12px;
  filter: grayscale(55%) contrast(1.05) brightness(0.9);
  transition: filter 0.5s ease;
}

:root[data-theme="dark"] .project-card-thumb {
  filter: grayscale(70%) contrast(1.1) brightness(0.5);
}

.project-card:hover .project-card-thumb,
:root[data-theme="dark"] .project-card:hover .project-card-thumb {
  filter: none;
}

/* image-only card: no text, full-color, larger */
.project-card--image,
.project-card--image:first-of-type {
  display: block;
  padding: 0;
  margin-bottom: 80px;
  border-top: none;
  border-bottom: none;
}

.project-card--image:last-of-type {
  margin-bottom: 0;
}

.project-card--image:hover {
  padding-left: 0;
  color: inherit;
}

.project-card--image .project-card-thumb {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 20px;
  filter: none;
  transition: filter 0.3s ease;
}

:root[data-theme="dark"] .project-card--image .project-card-thumb {
  filter: none;
}

.project-card--image:hover .project-card-thumb {
  filter: brightness(0.7);
}

.project-thumb-wrap {
  position: relative;
  display: block;
  line-height: 0;
  border-radius: 20px;
  overflow: hidden;
}

.project-thumb-scrim {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.project-card--image:hover .project-thumb-scrim {
  opacity: 1;
}

.project-thumb-scrim span {
  font-family: var(--serif);
  font-weight: 600;
  text-decoration: underline;
  font-size: clamp(20px, 3vw, 32px);
  color: #FAFAF7;
  text-align: center;
  padding: 0 24px;
  line-height: 1.3;
}

.project-card h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  margin: 0 0 6px;
}

.project-card p {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.project-card-arrow {
  font-size: 20px;
  flex-shrink: 0;
  margin-left: auto;
  transition: transform 0.25s ease;
}

.project-card:hover .project-card-arrow {
  transform: translateX(4px);
}

/* ---------- Generic page sections (About, etc.) ---------- */
.page-avatar-wrap {
  display: flex;
  justify-content: center;
  padding: 96px var(--side-pad) 8px;
}

.page-avatar {
  width: 160px;
  height: 160px;
  display: block;
  object-fit: cover;
  border-radius: 50%;
  filter: brightness(0.7);
  transition: filter 0.3s ease;
}

.page-avatar:hover {
  filter: brightness(1);
}

.page-photo {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px var(--side-pad) 96px;
}

.page-photo img {
  width: 100%;
  display: block;
  border-radius: 12px;
}

.page-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px var(--side-pad);
  border-top: none;
  transition: border-color 0.4s ease;
}

.page-section h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-section p {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 20px;
}

.page-section p:last-child { margin-bottom: 0; }

.page-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-list li {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 10px 0;
  font-size: 17px;
}

.page-list li span:first-child {
  color: var(--ink);
  font-weight: 600;
}

.page-list li span:last-child {
  color: var(--ink-soft);
}

@media (max-width: 640px) {
  .page-avatar {
    width: 120px;
    height: 120px;
  }
}

/* ---------- Contact / footer ---------- */
.contact {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px var(--side-pad) 96px;
  text-align: left;
  border-top: none;
}

.contact p {
  color: var(--ink-soft);
  margin: 0 0 12px;
  font-size: 15px;
}

.copyright {
  margin-top: 50px;
  font-size: 18px;
  color: var(--ink);
  text-align: left;
}

.contact-link {
  display: inline-block;
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 36px);
  text-decoration: none;
  color: var(--ink);
  margin-bottom: 32px;
}

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

.social-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 14px;
  margin-right: 20px;
}

.social-links a:hover { color: var(--ink); }

/* ---------- Theme-aware transitions ---------- */
section,
footer,
.project-card,
.contact-link,
.social-links a,
.timeline-list li,
.cs-hero-image .placeholder,
.cs-section {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

/* ---------- Theme toggle "activeness" pulse ---------- */
/* Applied briefly via JS to every section when dark mode is switched,
   so the hue change reads as an active, deliberate transition rather
   than an abrupt flash. */
.theme-fade {
  transition: opacity 0.3s ease !important;
  opacity: 0.4;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .timeline-list li {
    grid-template-columns: 1fr;
    gap: 2px;
    padding: 16px 0;
  }
  .timeline-company { text-align: left; }
  .site-header nav a { margin-left: 16px; }
  .project-card-thumb {
    width: 72px;
    height: 52px;
  }
}