/* ==========================================================================
   Optiware – Stylesheet
   Ein File, kein Framework. Farben und Abstände als Variablen.
   ========================================================================== */

:root {
    --ink: #272b2e;          /* Haupttextfarbe / dunkle Flächen */
    --ink-soft: #4a5056;
    --muted: #6b7178;
    --red: #e30613;          /* Logo-Rot */
    --blue: #b7c9e2;         /* Hellblau der bisherigen Buttons */
    --blue-soft: #e8eef7;
    --blue-dark: #2c4a72;
    --bg: #ffffff;
    --bg-alt: #f4f5f7;
    --line: #e2e5e9;

    --radius: 10px;
    --radius-lg: 18px;
    --shadow: 0 8px 28px rgba(39, 43, 46, .08);
    --container: 1140px;
    --gap: clamp(1.25rem, 3vw, 2.5rem);
    --section: clamp(3rem, 7vw, 5.5rem);

    --font: system-ui, -apple-system, "Segoe UI", Roboto, Arial, Helvetica, sans-serif;
}

/* ---------- Grundlagen ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
    margin: 0;
    font-family: var(--font);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--ink);
    background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-dark); text-underline-offset: .18em; }
a:hover { color: var(--red); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; }

.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.visually-hidden {
    position: absolute !important; width: 1px; height: 1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap;
}
.skip-link {
    position: absolute; left: 1rem; top: -3rem; z-index: 100;
    background: var(--ink); color: #fff; padding: .5rem 1rem; border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 3px solid var(--blue-dark); outline-offset: 2px; }

/* ---------- Header / Navigation ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 255, 255, .94);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 1rem; }
.logo img { width: 180px; height: auto; }

.main-nav ul { display: flex; gap: .25rem; list-style: none; margin: 0; padding: 0; }
.main-nav a {
    display: block; padding: .5rem .9rem; border-radius: var(--radius);
    color: var(--ink); text-decoration: none; font-weight: 600; font-size: .98rem;
    position: relative;
}
.main-nav a:hover { background: var(--bg-alt); color: var(--ink); }
/* Roter Punkt: oberhalb und links vom aktiven Menüpunkt */
.main-nav a[aria-current="page"]::after {
    content: ""; position: absolute; left: .35rem; top: .3rem;
    width: 6px; height: 6px; border-radius: 50%; background: var(--red);
}

.nav-toggle {
    display: none; width: 44px; height: 44px; border: 0; border-radius: var(--radius);
    background: var(--ink); cursor: pointer; position: relative;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
    position: absolute; left: 12px; width: 20px; height: 2px; background: #fff;
    transition: transform .2s, opacity .2s;
}
.nav-toggle-bar { top: 21px; }
.nav-toggle-bar::before { content: ""; left: 0; top: -6px; }
.nav-toggle-bar::after  { content: ""; left: 0; top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 820px) {
    .nav-toggle { display: block; }
    .main-nav {
        position: absolute; left: 0; right: 0; top: 100%;
        background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
        display: none;
    }
    .main-nav.is-open { display: block; }
    .main-nav ul { flex-direction: column; padding: .5rem 1.25rem 1rem; }
    .main-nav a { padding: .8rem .5rem; border-bottom: 1px solid var(--line); border-radius: 0; }
    .main-nav li:last-child a { border-bottom: 0; }
    .main-nav a { padding-left: 1rem; }
    .main-nav a[aria-current="page"]::after { left: .1rem; top: .65rem; }
    .logo img { width: 150px; }
}
/* Ohne JavaScript bleibt das Menü sichtbar */
.no-js .nav-toggle { display: none; }
.no-js .main-nav { position: static; display: block; box-shadow: none; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .8rem 1.4rem; border-radius: var(--radius);
    font-weight: 600; font-size: 1rem; text-decoration: none; line-height: 1.2;
    border: 2px solid transparent; cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; color: #fff; }
.btn-secondary { background: var(--blue); color: var(--ink); }
.btn-secondary:hover { background: #a3bad9; color: var(--ink); }
.btn-outline { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }
.btn .arrow { transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Sektionen ---------- */
.section { padding-block: var(--section); }
.section-alt { background: var(--bg-alt); }
.eyebrow {
    display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .08em;
    text-transform: uppercase; color: var(--red); margin-bottom: .6rem;
}
.lead { font-size: clamp(1.08rem, 1.6vw, 1.2rem); color: var(--ink-soft); }

/* Hero */
.hero { padding-block: clamp(2.5rem, 6vw, 5rem); }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--gap); align-items: center; }
/* Die Hero-Grafik bringt Kreis, Linien und Muster selbst mit – daher unverändert anzeigen */
.hero-media { justify-self: end; width: min(100%, 520px); }
.hero-media img { width: 100%; height: auto; }

/* Zweispaltig: Text + Bild */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: center; }
.split.reverse .split-media { order: -1; }
.split-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow); width: 100%; }

/* Listen mit Häkchen */
.check-list { list-style: none; padding: 0; margin: 0 0 1.25rem; }
.check-list li { position: relative; padding-left: 1.9rem; margin-bottom: .55rem; }
.check-list li::before {
    content: ""; position: absolute; left: 0; top: .32em;
    width: 1.15rem; height: 1.15rem; border-radius: 50%;
    background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%232c4a72' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 75% no-repeat;
}

/* Hinweis-Box */
.callout {
    background: var(--blue-soft); border-left: 4px solid var(--blue-dark);
    padding: 1rem 1.25rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.5rem 0;
}
.callout p:last-child { margin-bottom: 0; }

/* Karten (Module) */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 1.5rem; box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.card h3 { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem .6rem; margin-bottom: .5rem; hyphens: auto; overflow-wrap: break-word; }
.card .tag {
    font-size: .75rem; font-weight: 700; letter-spacing: .06em;
    background: var(--ink); color: #fff; padding: .2rem .5rem; border-radius: 6px;
}
.card p:last-child, .card ul:last-child { margin-bottom: 0; }

/* Screenshots */
.shot { margin: 0; }
.shot img { border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); background: #fff; }
.shot figcaption { font-size: .9rem; color: var(--muted); margin-top: .6rem; }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); align-items: start; margin-block: 2rem; }

/* Seitenkopf für Unterseiten */
/* Seitentitel schlicht wie auf der WordPress-Seite (kein dunkler Balken) */
.page-head { padding-top: clamp(2rem, 5vw, 3.25rem); }
.page-head h1 { margin: 0; }
.page-head .page-intro { font-size: clamp(1.1rem, 1.8vw, 1.3rem); font-weight: 600; color: var(--ink-soft); margin: .8rem 0 0; max-width: 60ch; }
.page-head + .section { padding-top: clamp(1.25rem, 3vw, 2rem); }

/* Bannergrafik über die volle Breite (OptiKEP, Über uns) */
.page-banner { height: clamp(160px, 26vw, 300px); background: var(--bg-alt) center / cover no-repeat; }
.page-banner--optikep   { background-image: url("../img/optiware-OptiKEP.jpg"); }
.page-banner--ueber-uns { background-image: url("../img/optiware-Ueber-uns.jpg"); }

/* Fließtext-Seiten (Impressum, Datenschutz) */
.prose > * { max-width: 75ch; }
.prose h2 { margin-top: 2.2em; font-size: 1.5rem; }
.prose h3 { margin-top: 1.8em; }
.prose h4 { margin: 1.4em 0 .4em; font-size: 1.05rem; }
.prose .caps { font-size: .9rem; }

/* ---------- Kontakt ---------- */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--gap); align-items: start; }
.contact-box { background: var(--bg-alt); border-radius: var(--radius-lg); padding: 1.75rem; }
.contact-box dl { margin: 0; }
.contact-box dt { font-weight: 700; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.contact-box dd { margin: 0 0 1.1rem; font-size: 1.1rem; }

.form { display: grid; gap: 1.1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field label { display: block; font-weight: 600; margin-bottom: .35rem; font-size: .95rem; }
.field .req { color: var(--red); }
.field input, .field textarea {
    width: 100%; font: inherit; color: inherit;
    padding: .75rem .9rem; border: 1px solid #c8cdd3; border-radius: var(--radius); background: #fff;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue-dark); box-shadow: 0 0 0 3px var(--blue-soft); }
.field textarea { min-height: 160px; resize: vertical; }
.field.has-error input, .field.has-error textarea { border-color: var(--red); }
.field .error { color: var(--red); font-size: .9rem; margin-top: .3rem; }
.consent { display: flex; gap: .7rem; align-items: flex-start; font-size: .95rem; }
.consent input { margin-top: .3rem; width: 1.1rem; height: 1.1rem; flex: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.alert { padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1.5rem; }
.alert-success { background: #e7f5ec; border: 1px solid #a8d8b9; color: #1d5e33; }
.alert-error { background: #fdecec; border: 1px solid #f2b3b3; color: #8a1c1c; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--line); margin-top: 0; font-size: .95rem; }
.footer-inner {
    display: grid; grid-template-columns: 1.3fr 1fr auto; gap: var(--gap);
    padding-block: 2.75rem; align-items: start;
}
.footer-brand img { margin-bottom: .8rem; }
.footer-brand p, .footer-contact p { margin: 0; color: var(--ink-soft); }
.site-footer a { color: var(--ink); text-decoration: none; }
.site-footer a:hover { color: var(--red); }
.footer-nav { display: flex; flex-direction: column; gap: .35rem; }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 1rem; font-size: .85rem; color: var(--muted); }

/* 404 */
.notfound { text-align: center; padding-block: clamp(4rem, 12vw, 8rem); }
.notfound .code { font-size: clamp(4rem, 14vw, 8rem); font-weight: 800; line-height: 1; color: var(--blue); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero-grid, .split, .contact-grid, .shots { grid-template-columns: 1fr; }
    .split.reverse .split-media { order: 0; }
    .hero-media { justify-self: center; width: min(90%, 420px); margin-top: 1rem; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .footer-nav { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; gap: 1.25rem; }
}
@media (max-width: 560px) {
    body { font-size: 1rem; }
    .form-row, .footer-inner { grid-template-columns: 1fr; }
    .btn-row .btn { width: 100%; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { transition: none !important; }
}
@media print {
    .site-header, .site-footer, .btn-row { display: none; }
}

/* ---------- Hilfsklassen ---------- */
.center { text-align: center; }
.center .btn-row, .btn-row-center { justify-content: center; }
.center .lead { margin-inline: auto; max-width: 60ch; }
.mt-section { margin-top: var(--section); }
.mt-lg { margin-top: 2.5rem; }
.h3 { font-size: 1.2rem; }
p.prose { max-width: 75ch; }