/* Grenzland IT — Stylesheet
   Keine externen Ressourcen (keine Google Fonts, keine CDNs):
   alles lokal, damit die Seite ohne Cookie-Banner DSGVO-konform bleibt. */

/* Farben direkt aus dem Logo abgemessen:
   Marineblau #021f3a (Wortmarke) · Blau #0082ec (das "IT")
   Himmelblau #1aaefd (Fluss, G-Bogen) · Grün #9cc614 (Kacheln, i-Punkt)
   Für Fließtext und Buttons sind Blau und Grün abgedunkelt, sonst reicht
   der Kontrast auf Weiß nicht für WCAG AA. */

:root {
  --bg:        #ffffff;
  --bg-alt:    #f1f6fb;
  --bg-deep:   #041f3a;
  --card:      #ffffff;
  --border:    #d8e2ed;
  --text:      #0b2440;
  --text-mute: #4e6483;
  --text-inv:  #eaf2fa;
  --accent:    #0067c4;
  --accent-dk: #004f9b;
  --accent-lt: #e2f0fd;
  --ok:        #6b9410;
  --radius:    14px;
  --maxw:      1120px;
  --shadow:    0 1px 2px rgba(4,31,58,.06), 0 8px 24px rgba(4,31,58,.08);

  /* Unveränderliche Markenfarben — nur für Flächen, nie für Fließtext */
  --brand-navy:  #021f3a;
  --brand-blue:  #0082ec;
  --brand-sky:   #1aaefd;
  --brand-green: #9cc614;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0b1622;
    --bg-alt:    #101d2c;
    --bg-deep:   #041f3a;
    --card:      #132234;
    --border:    #24384f;
    --text:      #e6eef7;
    --text-mute: #9db0c6;
    --text-inv:  #e6eef7;
    --accent:    #4db3fd;
    --accent-dk: #7cc8ff;
    --accent-lt: #0e2c47;
    --ok:        #a8d42a;
    --shadow:    0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 750; }
h3 { font-size: 1.15rem; font-weight: 700; }
p  { margin: 0 0 1em; }
a  { color: var(--accent); }

.lead { font-size: 1.15rem; color: var(--text-mute); max-width: 62ch; }

/* ---------- Header ---------- */

header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 28px; height: 68px; }
/* Kopfzeilen-Logo: Bildmarke als Bild (funktioniert auf hellem wie dunklem
   Grund), Wortmarke als Text — der Schriftzug des Original-Logos ist
   marineblau und wäre auf dunklem Hintergrund unlesbar. */
.logo { display: flex; align-items: center; gap: 11px; text-decoration: none;
        white-space: nowrap; color: var(--text); }
.logo img { width: 38px; height: auto; flex: none; }
.logo .wordmark { font-weight: 800; font-size: 1.12rem; letter-spacing: .01em;
                  text-transform: uppercase; line-height: 1; }
.logo .wordmark .it { color: var(--accent); margin-left: .28em; position: relative; }
/* kleines grünes Quadrat als Anspielung auf den i-Punkt im Logo */
.logo .wordmark .it::before {
  content: ""; position: absolute; top: -.5em; left: -.04em;
  width: .26em; height: .26em; background: var(--brand-green); border-radius: 1px;
}
@media (max-width: 420px) { .logo .wordmark { font-size: .98rem; } }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--text-mute); text-decoration: none; font-size: .95rem; font-weight: 500; }
.nav-links a:hover { color: var(--accent); }
@media (max-width: 860px) { .nav-links a:not(.btn) { display: none; } }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  background: var(--accent); color: #fff !important; text-decoration: none;
  font-weight: 650; font-size: .97rem; border: 1px solid var(--accent);
  cursor: pointer; transition: background .15s, transform .15s;
}
.btn:hover { background: var(--accent-dk); border-color: var(--accent-dk); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--text) !important; border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-alt); border-color: var(--accent); }
/* Im Dunkelmodus ist der Akzent hell — dann braucht der gefüllte Button
   dunkle Schrift. Der Ghost-Button ist ausgenommen, sonst wäre er unlesbar. */
@media (prefers-color-scheme: dark) {
  .btn:not(.btn-ghost) { color: #08161f !important; }
}

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

.hero { padding: 84px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 36px; } }
.eyebrow {
  display: inline-block; font-size: .82rem; font-weight: 700; letter-spacing: .09em;
  text-transform: uppercase; color: var(--accent); background: var(--accent-lt);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 18px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-facts { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 32px;
              padding-top: 24px; border-top: 1px solid var(--border); }
.hero-facts div { font-size: .93rem; color: var(--text-mute); }
.hero-facts strong { display: block; font-size: 1.35rem; color: var(--text); font-weight: 750; }
.hero-card {
  background: var(--bg-deep); color: var(--text-inv); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
}
.hero-card h3 { color: #fff; margin-bottom: 16px; }
.hero-card ul { list-style: none; padding: 0; margin: 0; }
.hero-card li { padding: 9px 0 9px 28px; position: relative; font-size: .97rem; color: #cddced; }
.hero-card li::before {
  content: ""; position: absolute; left: 0; top: 16px; width: 14px; height: 8px;
  border-left: 2.5px solid var(--brand-sky); border-bottom: 2.5px solid var(--brand-sky);
  transform: rotate(-45deg);
}

/* ---------- Sections ---------- */

section { padding: 72px 0; }
.alt { background: var(--bg-alt); }
.sec-head { max-width: 62ch; margin-bottom: 42px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.card .ico {
  width: 42px; height: 42px; border-radius: 10px; background: var(--accent-lt);
  color: var(--accent); display: grid; place-items: center; margin-bottom: 16px;
}
.card .ico svg { width: 22px; height: 22px; }
.card p { color: var(--text-mute); font-size: .96rem; margin-bottom: .8em; }
.card ul { margin: 0; padding-left: 20px; color: var(--text-mute); font-size: .93rem; }
.card li { margin-bottom: 5px; }

/* ---------- Preise ---------- */

.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 22px; }
.price {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column;
}
.price.featured { border-color: var(--accent); border-width: 2px; position: relative; }
.price.featured::after {
  content: "Beliebt"; position: absolute; top: -12px; right: 20px; background: var(--accent);
  color: #fff; font-size: .74rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; padding: 4px 11px; border-radius: 999px;
}
.price .amount { font-size: 2.3rem; font-weight: 800; letter-spacing: -.03em; margin: 6px 0 2px; }
.price .amount small { font-size: .95rem; font-weight: 500; color: var(--text-mute); letter-spacing: 0; }
.price .note { font-size: .87rem; color: var(--text-mute); margin-bottom: 18px; }
.price ul { list-style: none; padding: 0; margin: 0 0 22px; flex: 1; }
.price li { padding: 7px 0 7px 24px; position: relative; font-size: .94rem; border-top: 1px solid var(--border); }
.price li:first-child { border-top: none; }
.price li::before {
  content: ""; position: absolute; left: 2px; top: 15px; width: 11px; height: 6px;
  border-left: 2px solid var(--ok); border-bottom: 2px solid var(--ok); transform: rotate(-45deg);
}
.price-foot { margin-top: 26px; font-size: .9rem; color: var(--text-mute); }

/* ---------- Ablauf ---------- */

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 26px; counter-reset: s; }
.step { counter-increment: s; }
.step::before {
  content: counter(s); display: grid; place-items: center; width: 38px; height: 38px;
  border-radius: 50%; background: var(--accent); color: #fff; font-weight: 750; margin-bottom: 14px;
}
.step h3 { font-size: 1.05rem; }
.step p { color: var(--text-mute); font-size: .95rem; margin: 0; }

/* ---------- Über ---------- */

.about-grid { display: grid; grid-template-columns: 300px 1fr; gap: 44px; align-items: start; }
@media (max-width: 800px) { .about-grid { grid-template-columns: 1fr; gap: 26px; } }
.portrait {
  aspect-ratio: 1; border-radius: var(--radius); background: var(--bg-alt);
  border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--text-mute); font-size: .9rem; text-align: center; padding: 20px; overflow: hidden;
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- FAQ ---------- */

.faq { max-width: 78ch; }
.faq details {
  border-bottom: 1px solid var(--border); padding: 4px 0;
}
.faq summary {
  cursor: pointer; padding: 16px 0; font-weight: 650; list-style: none;
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.5rem; font-weight: 400; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { color: var(--text-mute); margin: 0 0 18px; font-size: .96rem; }

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

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; } }
.field { margin-bottom: 16px; }
label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 6px; }
input, textarea, select {
  width: 100%; padding: 11px 13px; font: inherit; font-size: .97rem;
  border: 1px solid var(--border); border-radius: 9px;
  background: var(--card); color: var(--text);
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent);
}
textarea { min-height: 130px; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: .88rem; color: var(--text-mute); }
.consent input { width: auto; margin-top: 4px; flex: none; }
.contact-direct li { list-style: none; padding: 14px 0; border-top: 1px solid var(--border); }
.contact-direct ul { padding: 0; margin: 0; }
.contact-direct .k { font-size: .82rem; text-transform: uppercase; letter-spacing: .07em;
                     color: var(--text-mute); font-weight: 650; }
.contact-direct .v { font-size: 1.1rem; font-weight: 650; }
.contact-direct .v a { text-decoration: none; }

.msg { padding: 14px 16px; border-radius: 10px; margin-bottom: 20px; font-size: .95rem; }
.msg-ok  { background: color-mix(in srgb, var(--ok) 14%, transparent); border: 1px solid var(--ok); }
.msg-err { background: color-mix(in srgb, #d64545 14%, transparent); border: 1px solid #d64545; }

/* ---------- Footer ---------- */

footer { background: var(--bg-deep); color: #a9bccd; padding: 48px 0 32px; font-size: .93rem; }
footer a { color: #cddced; text-decoration: none; }
footer a:hover { text-decoration: underline; }
.foot-grid { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap;
             padding-bottom: 26px; border-bottom: 1px solid rgba(255,255,255,.12); }
.foot-bottom { padding-top: 22px; display: flex; justify-content: space-between;
               gap: 18px; flex-wrap: wrap; font-size: .87rem; }
.foot-links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- Rechtstexte ---------- */

.legal { max-width: 78ch; padding: 56px 0 72px; }
.legal h2 { margin-top: 2em; font-size: 1.35rem; }
.legal h3 { margin-top: 1.6em; font-size: 1.05rem; }
.legal ul { color: var(--text-mute); }
.todo {
  background: #fff4d6; border: 1px solid #e0b83a; color: #5b4405;
  padding: 12px 16px; border-radius: 9px; font-size: .9rem; margin: 18px 0;
}
@media (prefers-color-scheme: dark) {
  .todo { background: #3a2f0d; border-color: #8a6f1c; color: #f0dfa5; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}