/* Briefdienst — Musterschreiben-Portal. System fonts, self-hosted, kein Framework. */
:root {
  --bg: #fbf9f4;
  --bg-alt: #f3efe6;
  --card: #ffffff;
  --fg: #23201a;
  --fg-dim: #6b6455;
  --accent: #b4541c;
  --accent-dark: #8f3f12;
  --line: rgba(60, 45, 20, 0.14);
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171410;
    --bg-alt: #1f1b15;
    --card: #252019;
    --fg: #ede7db;
    --fg-dim: #a2987f;
    --accent: #e08a4c;
    --accent-dark: #c96f30;
    --line: rgba(255, 240, 210, 0.12);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.hdr {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.hdr__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--fg); font-weight: 700; }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 18px; font-size: 0.95rem; }
.nav a { color: var(--fg-dim); }
.nav a:hover { color: var(--fg); text-decoration: none; }

/* Hero — warmes Papier-Ambiente */
.hero {
  padding: 84px 0 60px; text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%);
}
.hero__kicker {
  display: inline-block; font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-dark); margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.1rem); line-height: 1.15;
  margin: 0 0 18px; letter-spacing: -0.02em;
}
.hero__sub { max-width: 660px; margin: 0 auto 28px; color: var(--fg-dim); font-size: 1.08rem; }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 0.98rem; border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { box-shadow: 0 6px 22px color-mix(in srgb, var(--accent) 40%, transparent); }
.btn--ghost { border-color: var(--line); color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent); }

/* Reservierter Ad-Slot (kein Layout-Shift) */
.ad-slot {
  margin: 8px auto 40px;
  min-height: 90px;
  max-width: 970px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}
.ad-slot::after {
  content: "Werbefläche";
  display: block; text-align: center; line-height: 90px;
  font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-dim); opacity: 0.6;
}

/* Sections */
.section { padding: 56px 0; }
.section--alt { background: var(--bg-alt); }
.section h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 8px; letter-spacing: -0.01em; }
.section__sub { margin: 0 0 28px; color: var(--fg-dim); }
.tag {
  display: inline-block; font-size: 0.72rem; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent-dark); vertical-align: middle; letter-spacing: 0.04em;
}

/* Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent); transform: translateY(-2px); }
.card h3 { margin: 0 0 10px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--fg-dim); font-size: 0.94rem; }
/* Ganze Karte klickbar: h3>a als "stretched link" */
.card.has-link { position: relative; }
.card.has-link > h3 > a::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius); }
.card.has-link:hover h3 > a { text-decoration: underline; }

/* Tool-Teaser */
.tool-teaser {
  background: var(--card); border: 1px dashed var(--line);
  border-radius: var(--radius); padding: 36px 24px; text-align: center;
}
.tool-teaser__icon { font-size: 2rem; display: block; margin-bottom: 10px; }
.tool-teaser p { margin: 0; color: var(--fg-dim); }

/* Legal */
.legal { max-width: 760px; }
.legal h1 { font-size: 1.7rem; margin: 40px 0 8px; }
.legal h2 { font-size: 1.15rem; margin: 28px 0 8px; }
.legal p { margin: 8px 0; }
.legal .muted { color: var(--fg-dim); font-size: 0.9rem; }

/* Musterbrief-Seiten */
.crumbs { font-size: 0.85rem; color: var(--fg-dim); margin: 24px 0 8px; }
.crumbs a { color: var(--fg-dim); }
.muster { max-width: 800px; margin-bottom: 40px; }
.muster h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); margin: 8px 0 6px; letter-spacing: -0.01em; }
.muster .lead { font-size: 1.1rem; color: var(--fg-dim); margin: 0 0 12px; }
.muster h2 { font-size: 1.25rem; margin: 32px 0 8px; }
.muster h3 { font-size: 1.05rem; margin: 20px 0 6px; }
.muster p { margin: 10px 0; }
.muster ul, .muster ol { margin: 10px 0; padding-left: 24px; }
.muster li { margin: 4px 0; }

.letter-block { position: relative; margin: 20px 0; }
.letter {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 32px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.02rem;
  line-height: 1.7;
  white-space: pre-wrap;
}
.letter-copy {
  position: absolute; top: 10px; right: 10px;
  border: 1px solid var(--line); background: var(--bg);
  color: var(--fg-dim); border-radius: 8px;
  font: 600 0.78rem/1 system-ui, sans-serif;
  padding: 7px 12px; cursor: pointer;
}
.letter-copy:hover { border-color: var(--accent); color: var(--fg); }
.muster .hint {
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px; font-size: 0.92rem; color: var(--fg-dim);
}
.muster .related { margin-top: 36px; padding-top: 16px; border-top: 1px solid var(--line); }
.muster .related a { display: block; margin: 6px 0; }

/* Footer */
.ftr { border-top: 1px solid var(--line); padding: 28px 0; margin-top: 40px; }
.ftr__inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ftr__copy { margin: 0; color: var(--fg-dim); font-size: 0.88rem; }
.ftr nav { display: flex; gap: 16px; font-size: 0.88rem; }
.ftr a { color: var(--fg-dim); }
.ftr a:hover { color: var(--fg); }

/* DIN-5008-Plan */
.din-plan { position: relative; width: 210px; height: 297px; margin: 24px auto; border: 2px solid var(--fg); background: var(--paper); border-radius: 2px; font-size: 8px; line-height: 1.35; zoom: 2.2; }
@media (max-width: 640px) { .din-plan { zoom: 1.4; } }
.din-plan__win { position: absolute; left: 25px; top: 45px; width: 85px; height: 45px; border: 1.5px dashed var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); padding: 4px 6px; }
.din-plan__win b { display: block; font-size: 7px; color: var(--accent); margin-bottom: 2px; }
.din-plan__info { position: absolute; left: 122px; top: 59px; width: 70px; }
.din-plan__info b { font-size: 7px; }
.din-plan__info div { margin-bottom: 3px; }
.din-plan__subj { position: absolute; left: 25px; top: 148px; }
.din-plan__subj b { display: block; }
.din-plan__note { text-align: center; color: var(--fg-dim); font-size: 0.85rem; margin-top: 8px; }
.din-tbl { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.din-tbl th, .din-tbl td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
.din-tbl th { background: color-mix(in srgb, var(--accent) 7%, transparent); font-weight: 600; }

@media (max-width: 640px) {
  .nav { display: none; }
  .hero { padding: 56px 0 44px; }
}