/* ============================================================
   IT Solutions Sebastian Reßler - Stylesheet
   Reines CSS, keine Fremdanbieter, keine Schriftdienste.
   Schrift: Systemschriften (auf jedem Gerät vorhanden).
   ============================================================ */

:root {
      --bg: #e9e9ea; --surface: #ffffff; --ink: #1a1720; --ink-soft: #585263; --ink-faint: #837d8d;
  --line: #e6e2ec; --line-strong: #bdb4cb;
  --brand: #6740c4; --brand-ink: #5330a8; --brand-soft: #ede7fb;
  --btn-bg: #6740c4; --btn-bg-hover: #5330a8; --btn-ink: #ffffff;
  --badge-ink: #5330a8; --nav-ink: #5330a8;
  --head-bg: rgba(255,255,255,.92); --foot-bg: #181322; --foot-ink: #b6afc2; --foot-head: #ffffff; --foot-link: #ded8e8;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.62;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- Kopfbereich ---------- */

.site-head {
  position: sticky; top: 0; z-index: 50;
  background: var(--head-bg);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-head .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; min-height: 70px;
}

.brand { display: flex; align-items: center; gap: 11px; font-weight: 650; color: var(--ink); letter-spacing: -.015em; }
.brand:hover { text-decoration: none; }
.brand svg { flex: none; }
.brand b { font-weight: 650; }
.brand span { display: block; font-size: .78rem; font-weight: 500; color: var(--ink-faint); letter-spacing: .02em; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--ink-soft); font-size: .95rem; font-weight: 500;
  padding: 8px 13px; border-radius: var(--radius-sm);
}
.nav a:hover { color: var(--ink); background: var(--bg); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--nav-ink); background: var(--brand-soft); }

/* ---------- Hero ---------- */

.hero { padding: 88px 0 76px; background: var(--surface); border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.15rem); line-height: 1.12; letter-spacing: -.032em; font-weight: 680; max-width: 20ch; }
.hero .lead { margin-top: 20px; font-size: clamp(1.05rem, 1rem + .35vw, 1.25rem); color: var(--ink-soft); max-width: 56ch; }
.hero .actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }

.eyebrow {
  display: inline-block; margin-bottom: 18px; padding: 5px 12px;
  background: var(--brand-soft); color: var(--badge-ink);
  border-radius: 999px; font-size: .8rem; font-weight: 600; letter-spacing: .01em;
}

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: var(--radius-sm);
  font-size: .96rem; font-weight: 600; border: 1px solid transparent; cursor: pointer;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--btn-bg); color: var(--btn-ink); }
.btn-primary:hover { background: var(--btn-bg-hover); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--bg); border-color: var(--ink-faint); }

/* ---------- Abschnitte ---------- */

.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(1.5rem, 1.2rem + 1.1vw, 2rem); letter-spacing: -.025em; font-weight: 660; line-height: 1.2; }
.section-head p { margin-top: 12px; color: var(--ink-soft); font-size: 1.05rem; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
  box-shadow: var(--shadow);
}
.card h3 { font-size: 1.1rem; font-weight: 640; letter-spacing: -.012em; margin-bottom: 9px; }
.card p { color: var(--ink-soft); font-size: .96rem; }
.card .icon {
  width: 42px; height: 42px; border-radius: 11px;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}

.card-link { display: block; color: inherit; }
.card-link:hover { text-decoration: none; border-color: var(--brand); }
.card-link:hover h3 { color: var(--brand); }

/* ---------- Projektkarten ---------- */

.project { display: flex; flex-direction: column; gap: 14px; }
.project .tag {
  align-self: flex-start; padding: 4px 10px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line);
  font-size: .76rem; font-weight: 600; color: var(--ink-soft); letter-spacing: .02em;
}
.project .facts { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.project .facts li {
  font-size: .84rem; color: var(--ink-soft);
  background: var(--bg); border: 1px solid var(--line);
  padding: 3px 10px; border-radius: 999px;
}

/* ---------- Fließtext-Seiten ---------- */

.page-head { padding: 60px 0 44px; background: var(--surface); border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(1.75rem, 1.3rem + 1.7vw, 2.5rem); letter-spacing: -.03em; font-weight: 670; line-height: 1.15; }
.page-head p { margin-top: 14px; color: var(--ink-soft); font-size: 1.08rem; max-width: 60ch; }

.prose { max-width: 74ch; }
.prose h2 { font-size: 1.35rem; font-weight: 650; letter-spacing: -.02em; margin: 38px 0 10px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.08rem; font-weight: 640; margin: 26px 0 8px; }
.prose p { margin-bottom: 13px; color: var(--ink-soft); }
.prose ul, .prose ol { margin: 0 0 14px 20px; color: var(--ink-soft); }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--ink); font-weight: 620; }
.prose code { background: var(--bg); border: 1px solid var(--line); padding: 1px 6px; border-radius: 5px; font-size: .89em; }
.prose address { font-style: normal; margin-bottom: 14px; color: var(--ink-soft); }

.hinweis {
  background: var(--brand-soft); border: 1px solid #cfe0f7;
  border-radius: var(--radius); padding: 18px 22px; margin-bottom: 26px;
}
.hinweis p { margin: 0; color: var(--brand-ink); font-size: .96rem; }

/* ---------- Kontakt ---------- */

.contact-list { list-style: none; display: grid; gap: 14px; }
.contact-list li { display: flex; gap: 13px; align-items: flex-start; }
.contact-list svg { flex: none; margin-top: 3px; color: var(--brand); }
.contact-list b { display: block; font-weight: 600; font-size: .95rem; }
.contact-list span { color: var(--ink-soft); font-size: .96rem; }

/* ---------- Fußbereich ---------- */

.site-foot { background: var(--foot-bg); color: var(--foot-ink); padding: 56px 0 30px; margin-top: 0; }
.site-foot a { color: var(--foot-link); }
.site-foot a:hover { color: #fff; }
.site-foot .cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.site-foot h4 { color: var(--foot-head); font-size: .82rem; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 15px; font-weight: 620; }
.site-foot ul { list-style: none; }
.site-foot li { margin-bottom: 9px; font-size: .93rem; }
.site-foot .about p { font-size: .93rem; max-width: 40ch; }
.site-foot .bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1);
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between;
  font-size: .86rem; color: #8b95a5;
}

/* ---------- Responsiv ---------- */

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .site-foot .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px; }
  /* Kopfbereich auf zwei Zeilen: oben die Marke, darunter die Navigation.
     Vorher standen Logo und vier Menuepunkte in einer Zeile und klebten
     aneinander. */
  .site-head .wrap { flex-wrap: wrap; justify-content: center; gap: 10px; padding-top: 12px; padding-bottom: 12px; }
  .brand { width: 100%; justify-content: center; }
  .nav { width: 100%; justify-content: center; }
  .nav a { padding: 7px 11px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .site-foot .cols { grid-template-columns: 1fr; gap: 30px; }
  .hero { padding: 60px 0 52px; }
  .section { padding: 52px 0; }
  .nav { gap: 0; }
  .nav a { padding: 8px 9px; font-size: .9rem; }
  .brand span { display: none; }
}

@media print {
  .site-head, .site-foot, .actions { display: none; }
  body { background: #fff; }
}

/* ------------------------------------------------------------------
   Dunkler Modus des Geraets.
   Wer sein Betriebssystem dunkel gestellt hat, bekommt die warme
   Farbwelt. Die Wahl haengt am Geraet, nicht an einer Einstellung
   in der Seite - deshalb braucht es kein Skript und keinen Schalter.
   ------------------------------------------------------------------ */
@media (prefers-color-scheme: dark) {
  :root {
  --bg: #17161b; --surface: #232128; --ink: #eeecf2; --ink-soft: #a9a4b4; --ink-faint: #7d7889;
  --line: #2f2c37; --line-strong: #45414f;
  --brand: #a98bf0; --brand-ink: #c3aef7; --brand-soft: #2a2440;
  --btn-bg: #7c56d6; --btn-bg-hover: #6a45c4; --btn-ink: #ffffff;
  --badge-ink: #c3aef7; --nav-ink: #c3aef7;
  --head-bg: rgba(23,22,27,.92); --foot-bg: #101014; --foot-ink: #a8a3b3; --foot-head: #ffffff; --foot-link: #cbc6d6;
  }
}

/* ------------------------------------------------------------------
   Die beiden Projektkarten tragen die Farbe ihrer Anwendung:
   Hello ist gruen (Smaragd), Salve ist warm (Terrakotta).
   So sind sie auf einen Blick auseinanderzuhalten.
   ------------------------------------------------------------------ */
/* Die beiden Projektkarten tragen die Markenfarbe. Unterschieden werden
   sie nur noch ueber ihre Etiketten, nicht mehr ueber eigene Farben. */
.project-hello, .project-salve { border-top: 3px solid var(--brand); }
.project-hello .tag, .project-salve .tag {
  background: var(--brand-soft); border-color: var(--line-strong); color: var(--badge-ink);
}

/* ------------------------------------------------------------------
   Eine feine pinke Kante ueber dem Fussbereich. Sie fuehrt die
   Markenfarbe bis unten durch, damit der dunkle Block nicht
   unvermittelt anfaengt.
   ------------------------------------------------------------------ */
.site-foot { border-top: 3px solid var(--brand); }

/* ------------------------------------------------------------------
   Kontaktformular. Bewusst schlicht: keine Fremdbibliothek, kein
   Skript eines Drittanbieters, keine Weitergabe der Eingaben.
   ------------------------------------------------------------------ */
.formular { display: grid; gap: 16px; }
.feld { display: grid; gap: 6px; }
.feld label { font-size: .9rem; font-weight: 600; color: var(--ink); }
.feld input, .feld select, .feld textarea {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  padding: 11px 13px; width: 100%;
}
.feld textarea { resize: vertical; min-height: 120px; }
.feld input:focus, .feld select:focus, .feld textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}
.feld input:user-invalid, .feld textarea:user-invalid, .feld select:user-invalid { border-color: #b03030; }
.feld label .pflicht { color: var(--brand); font-weight: 700; }
.feld-kasten { display: flex; gap: 10px; align-items: flex-start; }
.feld-kasten input[type="checkbox"] { width: auto; margin-top: 3px; flex: none; accent-color: var(--brand); }
.feld-kasten label { font-weight: 400; font-size: .9rem; color: var(--ink-soft); line-height: 1.5; }
.falle { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.formular-hinweis { font-size: .84rem; color: var(--ink-soft); margin: 2px 0 0; }
.formular-status { margin: 6px 0 0; font-size: .94rem; min-height: 1.4em; }
.formular-status.gut { color: #1a6142; font-weight: 600; }
.formular-status.schlecht { color: #b03030; font-weight: 600; }
.btn[disabled] { opacity: .6; cursor: progress; }