:root {
  --color-bg:      #ffffff;
  --color-surface: #f7f7f5;
  --color-text:    #1a1a1e;
  --color-muted:   #6b6b7a;
  --color-accent:  #8c2030;
  --color-accent-h:#731a27;
  --color-border:  #e8e8ec;
}

/* specificity 0,2,0 — ties PicoCSS's :root:not([data-theme=dark]), wins via load order */
:root[data-theme="light"] {
  --pico-background-color:           var(--color-bg);
  --pico-color:                      var(--color-text);
  --pico-muted-color:                var(--color-muted);
  --pico-muted-border-color:         var(--color-border);
  --pico-font-family:                system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  /* primary — buttons, active states */
  --pico-primary:                    var(--color-accent);
  --pico-primary-background:         var(--color-accent);
  --pico-primary-border:             var(--color-accent);
  --pico-primary-underline:          rgba(140,32,48,.35);
  --pico-primary-hover:              var(--color-accent-h);
  --pico-primary-hover-background:   var(--color-accent-h);
  --pico-primary-hover-border:       var(--color-accent-h);
  --pico-primary-focus:              rgba(140,32,48,.25);
  --pico-primary-inverse:            #ffffff;
  /* secondary — outline buttons per design guide */
  --pico-secondary:                  var(--color-text);
  --pico-secondary-background:       transparent;
  --pico-secondary-border:           var(--color-border);
  --pico-secondary-underline:        transparent;
  --pico-secondary-hover:            var(--color-text);
  --pico-secondary-hover-background: var(--color-surface);
  --pico-secondary-hover-border:     var(--color-text);
  --pico-secondary-inverse:          var(--color-text);
  /* card */
  --pico-card-background-color:      var(--color-bg);
  --pico-card-border-color:          var(--color-border);
}

h1, h2 {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.45em;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; font-weight: 600; font-family: system-ui, sans-serif; }
h4 { font-size: 1rem;   font-weight: 600; font-family: system-ui, sans-serif; }

body { background-color: var(--color-bg); color: var(--color-text); }

/* Inline links: dark text, accent on hover — per design guide */
a:not([role="button"]) { color: var(--color-text); text-decoration: none; }
a:not([role="button"]):hover { color: var(--color-accent); text-decoration: underline; }
a svg { vertical-align: middle; display: inline-block; }

/* ── Language switching ── */
[data-lang="en"] .lang-de { display: none; }
[data-lang="de"] .lang-en { display: none; }

/* ── Nav ── */
body > nav {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: .75rem;
}
nav ul { margin: 0; }
.nav-logo {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
}
nav a { color: var(--color-muted); font-size: .875rem; font-family: system-ui, sans-serif; }
nav a:hover { color: var(--color-text); }
.nav-cta {
  color: var(--color-accent) !important;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: .25rem .75rem;
  font-weight: 600;
}
.nav-cta:hover { background: var(--color-accent); color: #ffffff !important; }
.lang-toggle-btn {
  all: unset;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-muted);
  cursor: pointer;
  font-size: .8rem;
  font-family: system-ui, sans-serif;
  font-weight: 600;
  padding: .2rem .55rem;
  line-height: 1.4;
  display: inline-block;
}
.lang-toggle-btn:hover { color: var(--color-text); border-color: var(--color-text); }

/* ── Hero ── */
.hero {
  background-color: var(--color-surface);
  background-image: url('img/hero_banner2.png');
  background-size: cover;
  background-position: center 40%;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
    rgba(247,247,245,0.15) 0%,
    rgba(247,247,245,0.75) 45%,
    rgba(247,247,245,1)    90%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3.5rem 1.5rem 5rem;
}
.hero h1 {
  font-size: clamp(2rem, 8vw, 4.5rem);
  letter-spacing: 0.45em;
  color: var(--color-text);
  margin: 0;
  line-height: 1.1;
}
.hero-tagline {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-style: italic;
  font-size: clamp(.95rem, 2vw, 1.2rem);
  color: var(--color-muted);
  margin: 1rem 0 0;
}
.hero-sub {
  max-width: 560px;
  margin: 1.5rem auto 2.5rem;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.75;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-actions a[role="button"] {
  padding: .75rem 2rem;
  font-size: .9rem;
  font-family: system-ui, sans-serif;
  font-weight: 600;
  border-radius: 4px;
}
.hero-chips {
  display: flex;
  gap: .5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3rem;
}
.chip {
  padding: .3rem .9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: .78rem;
  color: var(--color-muted);
  font-family: system-ui, sans-serif;
}

/* ── Sections ── */
section { padding: 4rem 0; border-bottom: 1px solid var(--color-border); }
section:last-of-type { border-bottom: none; }
.section-label {
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: .4rem;
  font-family: system-ui, sans-serif;
}
.lead { font-size: 1.05rem; color: var(--color-muted); line-height: 1.75;}

/* ── Feature grid ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}
.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.5rem;
  transition: border-color .2s;
}
.feature-card:hover { border-color: var(--color-accent); }
.card-header { display: flex; align-items: center; gap: .55rem; margin-bottom: .65rem; }
.card-icon { flex-shrink: 0; color: var(--color-text); }
.feature-card h3 { margin: 0 0 .5rem; }
.card-header h3,
.card-header h4 { margin: 0; }
.feature-card p  { font-size: .9rem; color: var(--color-muted); margin: 0; line-height: 1.65; }

/* ── Phases ── */
.phases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}
.phase-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.5rem;
}
.phase-label {
  display: inline-block;
  background: var(--color-accent);
  color: #ffffff;
  font-size: .72rem;
  font-weight: 600;
  font-family: system-ui, sans-serif;
  padding: .15rem .6rem;
  border-radius: 4px;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.phase-card h3 { margin: 0 0 .5rem; }
.phase-card p  { font-size: .875rem; color: var(--color-muted); margin: 0; line-height: 1.65; }

/* ── Status lists ── */
.status-list { list-style: none; padding: 0; margin: 0; }
.status-list li {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  padding: .5rem 0;
  font-size: .9rem;
  border-bottom: 1px solid var(--color-border);
  font-family: system-ui, sans-serif;
}
.status-list li:last-child { border-bottom: none; }
.s-icon { flex-shrink: 0; color: var(--color-muted); }

/* ── Inspirations ── */
.inspo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.inspo-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.5rem;
}
.inspo-card h4 { margin: 0 0 .2rem; }
.inspo-card h4 a { color: var(--color-text); text-decoration: underline; text-underline-offset: 3px; }
.inspo-card h4 a:hover { color: var(--color-accent); }
.inspo-year { font-size: .73rem; color: var(--color-accent); display: block; margin-bottom: .5rem; font-family: system-ui, sans-serif; }
.inspo-card p { font-size: .85rem; color: var(--color-muted); margin: 0; line-height: 1.55; }

/* ── Dev items ── */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.dev-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.5rem;
  transition: border-color .2s;
}
.dev-item:hover { border-color: var(--color-accent); }
.dev-item p { margin: 0; font-size: .85rem; color: var(--color-muted); line-height: 1.55; }

/* ── History (wider cards) ── */
.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

/* ── CTA box ── */
.cta-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2.5rem 2rem;
  text-align: center;
}
.cta-box h2 { margin-bottom: .5rem; }
.cta-box .lead { margin: 0 auto 2rem; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.cta-actions a[role="button"] {
  font-family: system-ui, sans-serif;
  font-weight: 600;
  font-size: .9rem;
  border-radius: 4px;
}

/* ── Impressum ── */
.impressum-box { max-width: 560px; margin-top: 1.5rem; }
.impressum-box h3 { margin-top: 1.5rem; margin-bottom: .4rem; font-size: .9rem; text-transform: uppercase; letter-spacing: .08em; }
.impressum-box p  { font-size: .85rem; color: var(--color-muted); line-height: 1.7; }
.impressum-box a  { color: var(--color-muted); }
details.impressum-details { border: 1px solid var(--color-border); border-radius: 4px; padding: .75rem 1.25rem; }
details.impressum-details summary { cursor: pointer; color: var(--color-muted); font-size: .85rem; font-family: system-ui, sans-serif; list-style: none; }
details.impressum-details summary::-webkit-details-marker { display: none; }
details.impressum-details summary::before { content: '▸ '; font-size: .7rem; }
details.impressum-details[open] summary::before { content: '▾ '; }

/* ── Footer ── */
footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
  font-size: .875rem;
  color: var(--color-muted);
  font-family: system-ui, sans-serif;
}
footer a { color: var(--color-muted); }
footer a:hover { color: var(--color-text); }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer-logo {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--color-text);
}

@media (max-width: 600px) {
  .hero-inner { padding: 2.5rem 1rem 3.5rem; }
  section { padding: 2.5rem 0; }
}