/* =========================================================
   Michi Wegmueller — personal site
   Editorial-dark aesthetic, bilingual DE/EN
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --bg:            #0b0b0d;
  --bg-elev:       #141418;
  --bg-elev-2:     #1c1c22;
  --ink:           #f4f2ee;
  --ink-dim:       #b5b0a6;
  --ink-mute:      #6b675f;
  --line:          rgba(244, 242, 238, 0.08);
  --line-strong:   rgba(244, 242, 238, 0.18);
  --accent:        #d4af6a;          /* warm gold */
  --accent-soft:   rgba(212, 175, 106, 0.12);
  --danger:        #e06b5e;
  --ok:            #8bb77d;
  --serif:         "Fraunces", "Playfair Display", "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:          "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:          "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --maxw:          1180px;
  --maxw-narrow:   780px;
  --radius:        4px;
  --t-fast:        160ms cubic-bezier(.2,.6,.2,1);
  --t-med:         320ms cubic-bezier(.2,.6,.2,1);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: color var(--t-fast), border-color var(--t-fast);
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }
::selection { background: var(--accent); color: var(--bg); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(2.6rem, 6vw, 5.2rem); font-weight: 400; }
h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
h4 { font-size: 1.1rem; letter-spacing: 0.02em; text-transform: uppercase; font-family: var(--sans); font-weight: 600; color: var(--ink-dim); }
p  { margin: 0 0 1.2em; color: var(--ink-dim); }
p.lead { font-size: 1.2rem; color: var(--ink); line-height: 1.55; max-width: 62ch; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.2rem;
  font-weight: 500;
}

/* ---------- Layout ---------- */
.wrap       { max-width: var(--maxw);       margin: 0 auto; padding: 0 clamp(1.2rem, 4vw, 2.4rem); }
.wrap-narrow{ max-width: var(--maxw-narrow);margin: 0 auto; padding: 0 clamp(1.2rem, 4vw, 2.4rem); }
section     { padding: clamp(3.5rem, 8vw, 7rem) 0; }
.section-line { border-top: 1px solid var(--line); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 11, 13, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
  gap: 1.2rem;
}
.brand {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  border: 0;
  color: var(--ink);
  white-space: nowrap;
}
.brand .dot { color: var(--accent); }
.nav-links {
  display: flex;
  gap: clamp(1rem, 2.4vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}
.nav-links a {
  border: 0;
  font-size: 0.92rem;
  color: var(--ink-dim);
  padding: 0.3rem 0;
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-med);
}
.nav-links a:hover,
.nav-links a.active { color: var(--ink); }
.nav-links a.active::after,
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
}
.lang-toggle button {
  background: transparent;
  color: var(--ink-dim);
  border: 0;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast);
}
.lang-toggle button.active {
  background: var(--accent);
  color: var(--bg);
}

/* Mobile nav */
.nav-toggle { display: none; background: none; border: 0; color: var(--ink); cursor: pointer; padding: 0.4rem; }
@media (max-width: 780px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-elev);
    flex-direction: column;
    padding: 1.2rem 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--t-med);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(3rem, 6vw, 5rem);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% 40% auto auto;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle at center, rgba(212, 175, 106, 0.14), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}
.hero h1 {
  font-weight: 300;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.4rem;
  margin-top: 2rem;
  font-size: 0.88rem;
  color: var(--ink-mute);
  font-family: var(--mono);
  letter-spacing: 0.06em;
}
.hero-meta span { display: inline-flex; align-items: center; gap: 0.5rem; }
.hero-meta span::before { content: "—"; color: var(--accent); }

.portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  background: linear-gradient(145deg, var(--bg-elev-2), var(--bg-elev));
  border: 1px solid var(--line);
  border-radius: 2px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.portrait-initials {
  font-family: var(--serif);
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--accent);
  font-weight: 300;
  letter-spacing: -0.03em;
}
.portrait-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(8%) contrast(1.02);
}
.portrait::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.6));
  pointer-events: none;
}
.portrait .caption {
  position: absolute;
  bottom: 1rem; left: 1rem; right: 1rem;
  z-index: 1;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  display: flex;
  justify-content: space-between;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: var(--t-fast);
  letter-spacing: 0.02em;
}
.btn:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn.primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn.primary:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn .arrow { transition: transform var(--t-fast); }
.btn:hover .arrow { transform: translateX(3px); }
.btn-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }

/* ---------- Feature tiles (Home) ---------- */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  margin-top: 3rem;
}
.tile {
  display: block;
  padding: 1.8rem 1.6rem 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: var(--t-med);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.tile:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  background: var(--bg-elev-2);
}
.tile h3 { margin: 0.4rem 0 0.8rem; }
.tile p { margin: 0; font-size: 0.95rem; color: var(--ink-dim); }
.tile .tile-num {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
}
.tile .arrow {
  position: absolute;
  bottom: 1.4rem;
  right: 1.4rem;
  color: var(--ink-mute);
  transition: var(--t-fast);
}
.tile:hover .arrow { color: var(--accent); transform: translateX(4px); }

/* ---------- Pull quote ---------- */
.pullquote {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  line-height: 1.3;
  font-weight: 300;
  color: var(--ink);
  max-width: 28ch;
  margin: 0 auto;
  text-align: center;
  padding: 0 1rem;
}
.pullquote em { color: var(--accent); font-style: italic; }
.pullquote-attr {
  display: block;
  text-align: center;
  margin-top: 1.6rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ---------- CV timeline ---------- */
.timeline {
  position: relative;
  margin: 3rem 0;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line-strong);
}
.cv-item {
  position: relative;
  padding: 0 0 2.5rem 2.8rem;
}
.cv-item:last-child { padding-bottom: 0; }
.cv-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.cv-item .period {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}
.cv-item .role {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin: 0 0 0.3rem;
  color: var(--ink);
  font-weight: 500;
}
.cv-item .org {
  font-size: 0.95rem;
  color: var(--ink-dim);
  margin-bottom: 0.8rem;
  letter-spacing: 0.02em;
}
.cv-item .desc { font-size: 0.95rem; color: var(--ink-dim); margin: 0; }
.cv-item .desc ul { margin: 0.6rem 0 0; padding-left: 1.2rem; }
.cv-item .desc li { margin-bottom: 0.3rem; }

/* Two-column CV lists */
.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem 3rem;
  margin-top: 2rem;
}
.two-col h4 { margin-bottom: 0.8rem; color: var(--accent); letter-spacing: 0.14em; }
.two-col ul { margin: 0; padding: 0; list-style: none; }
.two-col li { padding: 0.4rem 0; border-bottom: 1px solid var(--line); font-size: 0.95rem; color: var(--ink-dim); }
.two-col li:last-child { border-bottom: 0; }

/* ---------- Awards grid ---------- */
.awards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
  margin-top: 3rem;
}
.award {
  padding: 2rem 1.8rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: var(--t-med);
  position: relative;
}
.award:hover { border-color: var(--accent); transform: translateY(-4px); }
.award .award-year {
  font-family: var(--mono);
  font-size: 2.2rem;
  color: var(--accent);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1;
  margin-bottom: 0.8rem;
}
.award h3 { font-size: 1.25rem; margin: 0 0 0.5rem; color: var(--ink); }
.award .org {
  font-size: 0.85rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.award p { margin: 0; font-size: 0.95rem; }

/* ---------- Posts gallery ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.4rem;
  margin-top: 3rem;
}
.post-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  transition: var(--t-med);
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.post-card:hover { border-color: var(--accent); transform: translateY(-4px); background: var(--bg-elev-2); }
.post-card .date {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
}
.post-card h3 {
  font-size: 1.2rem;
  margin: 0.7rem 0 0.8rem;
  line-height: 1.25;
  font-family: var(--serif);
  font-weight: 500;
}
.post-card .excerpt {
  font-size: 0.92rem;
  color: var(--ink-dim);
  flex: 1;
  margin: 0 0 1.2rem;
}
.post-card .read-on {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.post-card:hover .read-on { color: var(--accent); }

/* ---------- Talks list ---------- */
.talks-list {
  list-style: none;
  padding: 0;
  margin: 3rem 0 0;
}
.talk {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  align-items: start;
  transition: var(--t-fast);
}
.talk:hover { background: rgba(244, 242, 238, 0.02); }
.talk:last-child { border-bottom: 1px solid var(--line); }
.talk .talk-date {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-top: 0.3rem;
}
.talk h3 {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
  line-height: 1.3;
  font-family: var(--serif);
  font-weight: 500;
}
.talk .talk-meta {
  font-size: 0.9rem;
  color: var(--ink-dim);
  margin: 0 0 0.5rem;
}
.talk .talk-role {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 0.4rem;
  white-space: nowrap;
}
@media (max-width: 720px) {
  .talk { grid-template-columns: 1fr; gap: 0.4rem; }
  .talk .talk-role { padding-top: 0.2rem; }
}

/* ---------- Contact / Footer ---------- */
.contact {
  background: var(--bg-elev);
  border-top: 1px solid var(--line);
  padding: clamp(4rem, 8vw, 7rem) 0;
  text-align: center;
}
.contact .btn-row { justify-content: center; }
.contact-email {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--accent);
  border: 0;
  display: inline-block;
  margin: 1.2rem 0;
  font-weight: 300;
}
.contact-email:hover { color: var(--ink); }

.site-footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-mute);
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.social-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.social-links a {
  border: 0;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.social-links a:hover { color: var(--accent); }

/* ---------- Bilingual visibility ---------- */
[data-lang] { display: none; }
body[data-active-lang="en"] [data-lang="en"] { display: inline; }
body[data-active-lang="de"] [data-lang="de"] { display: inline; }
body[data-active-lang="en"] [data-lang="en"].block,
body[data-active-lang="de"] [data-lang="de"].block { display: block; }
body[data-active-lang="en"] [data-lang="en"].flex,
body[data-active-lang="de"] [data-lang="de"].flex { display: flex; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 700ms var(--t-med), transform 700ms var(--t-med); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- Utility ---------- */
.center { text-align: center; }
.mt-0 { margin-top: 0 !important; }
.muted { color: var(--ink-mute); }
.divider { height: 1px; background: var(--line); margin: 3rem 0; }