/* Color Palette & Variables - Default: Light Theme */
:root {
  color-scheme: light;
  --bg: #f8f6f1;
  --surface: #fffdf9;
  --text: #29251f;
  --muted: #6f6961;
  --subtle: #928a80;
  --line: #e5ded4;
  --accent: #d96722;
  --content-width: 1080px;
  --radius: 16px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f8f6f1;
  --surface: #fffdf9;
  --text: #29251f;
  --muted: #6f6961;
  --subtle: #928a80;
  --line: #e5ded4;
  --accent: #d96722;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171614;
  --surface: #201e1b;
  --text: #f4f0e9;
  --muted: #b4aea4;
  --subtle: #827b71;
  --line: #38342f;
  --accent: #f28a42;
}

/* Global Reset & Base Styles */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "DM Sans", system-ui, -apple-system, sans-serif;
  font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased;
  transition: background-color .22s ease, color .22s ease;
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent); color: #21170f; }

/* Skip Link */
.skip-link {
  position: absolute; top: 1rem; left: 1rem; z-index: 10;
  padding: .65rem 1rem; background: var(--accent); color: #21170f;
  transform: translateY(-160%); border-radius: 6px; font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

/* Layout Shell */
.site-shell {
  width: min(var(--content-width), calc(100% - 64px));
  margin: 0 auto; display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(3.5rem, 8vw, 8rem);
}

/* Profile Sidebar */
.profile {
  position: sticky; top: 0; height: 100vh; min-height: 650px;
  display: flex; flex-direction: column; padding: 36px 0;
}

.topline { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.wordmark { font-size: 16px; font-weight: 700; letter-spacing: -.06em; }
.wordmark span { color: var(--accent); }
.availability { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* Header & Profile Picture */
.profile-header-main {
  display: flex; align-items: center; gap: 20px; margin-top: 2rem;
}

.portrait-wrap {
  width: 180px; height: 180px; flex-shrink: 0; position: relative;
}

.portrait {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: var(--radius); border: 1px solid var(--accent);
}

.portrait-fallback {
  display: none; place-items: center; width: 100%; height: 100%;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--surface); color: var(--accent);
  font-family: "DM Serif Display", Georgia, serif; font-size: 2.5rem;
}

.eyebrow { margin: 0 0 4px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.profile-identity h1 {
  margin: 0; font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(2rem, 2.8vw, 2.6rem); line-height: 1.05;
  letter-spacing: -.04em; font-weight: 400;
}
.accent { color: var(--accent); }
.role { margin: 8px 0 0; font-size: 0.92rem; font-weight: 600; color: var(--text); }

.intro-block { margin: auto 0; padding: 1.2rem 0 1.5rem; }
.intro { max-width: 360px; margin: 0; color: var(--muted); font-size: .95rem; }

/* Sidebar Footer & Links */
.profile-footer { border-top: 1px solid var(--line); padding-top: 18px; }
.location { margin: 0 0 6px; color: var(--muted); font-size: 12px; }

.profile-email { margin: 0 0 12px; font-size: 12px; }
.profile-email a {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-weight: 600; transition: opacity .2s;
}
.profile-email a:hover { opacity: 0.85; text-decoration: underline; }

.social-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.social-links a {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--muted); font-size: 12px; transition: color .2s;
}
.social-icon { flex-shrink: 0; stroke-width: 2px; }
.social-links a:hover, .site-footer a:hover { color: var(--accent); }

/* Main Content Column */
.content { min-width: 0; padding: 76px 0 25px; }
.section { padding: 0 0 42px; margin-bottom: 38px; border-bottom: 1px solid var(--line); }
.section-heading { display: flex; align-items: baseline; gap: 15px; margin-bottom: 22px; }
.section-number { color: var(--accent); font-size: 11px; font-variant-numeric: tabular-nums; }
h2 { margin: 0; font-family: "DM Serif Display", Georgia, serif; font-size: 1.42rem; line-height: 1.35; font-weight: 400; letter-spacing: -.02em; }

.section-body { padding-left: 34px; }
.section-body p { margin: 0 0 13px; color: var(--muted); }
.section-body .large-copy { color: var(--text); font-size: 1.25rem; line-height: 1.55; letter-spacing: -.025em; font-weight: 500; }
.muted { font-size: .9rem; }

/* Projects List */
.project-list { border-top: 1px solid var(--line); }
.project {
  display: grid; grid-template-columns: minmax(0, 1fr) auto 16px;
  align-items: center; gap: 15px; padding: 17px 0;
  border-bottom: 1px solid var(--line); transition: padding-left .2s;
}
.project:hover { padding-left: 6px; }
.project-main { display: flex; flex-direction: column; min-width: 0; }
.project-main strong { font-size: .94rem; font-weight: 700; }
.project-main small { margin-top: 3px; color: var(--muted); font-size: .79rem; line-height: 1.55; }
.project-meta { color: var(--subtle); font-size: 10px; white-space: nowrap; }
.project-arrow { color: var(--accent); }

/* Timeline */
.timeline { display: grid; gap: 22px; }
.timeline-item { display: grid; grid-template-columns: 105px minmax(0, 1fr); gap: 13px; }
.timeline-date { margin: 5px 0 0; color: var(--subtle); font-size: 10px; white-space: nowrap;}
.timeline-item h3 { margin: 0 0 5px; font-size: .9rem; }
.timeline-item h3 span { color: var(--muted); font-weight: 400; }
.timeline-item p:not(.timeline-date) { margin: 0; font-size: .82rem; line-height: 1.65; }

/* Tag List */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 16px 0 0; padding: 0; }
.tag-list li {
  padding: 5px 12px;
  border: 1px solid var(--accent);
  border-radius: 20px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  font-size: 11px;
  font-weight: 500;
}

/* Contact Panel */
.contact-panel { padding: 27px 28px 29px; border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); }
.contact-panel h2 { font-size: clamp(2rem, 3.3vw, 2.7rem); }
.contact-panel > p:not(.eyebrow) { margin: 10px 0 20px; color: var(--muted); font-size: .87rem; }
.contact-link { display: inline-flex; align-items: center; gap: 12px; padding-bottom: 4px; border-bottom: 1px solid var(--accent); font-size: .9rem; font-weight: 700; }
.contact-link span { color: var(--accent); }

/* Footer & Theme Switch */
.site-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; padding: 22px 0 0; color: var(--subtle); font-size: 10px; }
.site-footer a { transition: color .2s; }

.theme-switch { display: flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 30px; }
.theme-button {
  display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px;
  border: 0; border-radius: 20px; background: transparent; color: var(--muted);
  font: inherit; font-size: 10px; cursor: pointer; transition: background-color .2s, color .2s;
}
.theme-button[aria-pressed="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px #00000012; }

/* Responsive Media Queries */
@media (min-width: 1400px) { .site-shell { gap: 9rem; } }

@media (max-width: 850px) {
  .site-shell { width: min(680px, calc(100% - 44px)); display: block; }
  .profile { position: relative; height: auto; min-height: 0; padding: 28px 0 0; }
  .intro-block { margin: 0; padding: 2rem 0; }
  .profile-identity h1 { font-size: clamp(2.4rem, 8vw, 3.5rem); }
  .intro { max-width: 100%; }
  .profile-footer { padding-bottom: 24px; }
  .content { padding-top: 30px; }
}

@media (max-width: 520px) {
  .site-shell { width: calc(100% - 32px); }
  .profile-header-main { gap: 14px; }
  .portrait-wrap { width: 110px; height: 110px; }
  .section { margin-bottom: 30px; padding-bottom: 32px; }
  .section-body { padding-left: 0; }
  .section-heading { gap: 12px; margin-bottom: 17px; }
  .project { grid-template-columns: minmax(0, 1fr) 14px; gap: 10px; }
  .project-meta { display: none; }
  .timeline-item { grid-template-columns: 1fr; gap: 4px; }
  .timeline-date { margin-top: 0; }
  .contact-panel { padding: 22px 18px 24px; }
  .site-footer { justify-content: flex-start; column-gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}