/* ═══════════════════════════════════════════════════════════
   tcpo2.de — Gemeinsames Stylesheet (Basis: variolab.css)
   Datei: assets/tcpo2.css
   Einbinden in alle HTML-Seiten:
   <link rel="stylesheet" href="assets/tcpo2.css">
   Farben zentral oben unter :root ändern.
═══════════════════════════════════════════════════════════ */

:root {
    --vl-dunkelblau: #1A3A8A;
    --vl-mint:       #0F6E56;
    --vl-hellblau:   #1A5AAA;
    --vl-grau:       #4A6B7A;
    --vl-hellgrau:   #E8EFF8;
    --vl-mintell:    #E6F4F0;
    --vl-weiss:      #FFFFFF;
    --vl-dunkel:     #111B2E;
}

body { font-family: Arial, sans-serif; margin: 0; padding: 0; color: #1A1A2A; font-size: 1rem; }
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; }

/* ── Navigation ────────────────────────────────────────── */
.vl-nav {
    background-color: rgba(26,58,138,0.97);
    padding: 0.5rem 0;
    position: sticky; top: 0; z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.vl-nav .container { display: flex; align-items: center;
    justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.vl-nav .logo img { height: 44px; display: block; }
.vl-nav .logo { text-decoration: none; }
.vl-nav ul { list-style: none; margin: 0; padding: 0;
    display: flex; flex-wrap: wrap; align-items: center; gap: 2px; }
.vl-nav ul li { position: relative; }
.vl-nav ul li a {
    color: #FFFFFF; text-decoration: none; font-size: 14px;
    font-weight: 600; padding: 8px 12px; display: block;
    border-radius: 4px; transition: all 0.15s; white-space: nowrap;
}
.vl-nav ul li a:hover,
.vl-nav ul li a.aktiv { color: #4ACAA8; background-color: rgba(255,255,255,0.08); }
.vl-nav .dropdown { position: relative; }
.vl-nav .dropdown-menu {
    display: none; position: absolute; top: 100%; left: 0;
    background-color: var(--vl-dunkelblau); border-top: 3px solid var(--vl-mint);
    border-radius: 0 0 8px 8px; min-width: 180px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3); z-index: 999;
}
.vl-nav .dropdown:hover .dropdown-menu { display: block; }
.vl-nav .dropdown-menu a {
    padding: 10px 18px; font-size: 13px; border-radius: 0;
}
.vl-nav .btn-tel {
    background-color: var(--vl-mint); color: #FFFFFF !important;
    border-radius: 20px; padding: 7px 16px !important;
    font-size: 13px !important;
}
.vl-nav .btn-tel:hover { background-color: #0A5040 !important; }

/* ── Container ─────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-fluid { width: 100%; padding: 0; }

/* ── Abschnitt-Grundlagen ──────────────────────────────── */
section { padding: 72px 0; }
.section-dunkel { background-color: var(--vl-dunkel); }
.section-hellgrau { background-color: var(--vl-hellgrau); }
.section-weiss { background-color: #FFFFFF; }
.section-mint { background-color: var(--vl-mint); }
.section-blau { background-color: var(--vl-dunkelblau); }

/* ── Überschriften ─────────────────────────────────────── */
.vl-h1 { font-size: 3.6rem; font-weight: 900; line-height: 1.1; margin-bottom: 1.2rem; }
.vl-h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.6rem; color: var(--vl-dunkelblau); }
.vl-h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--vl-dunkelblau); }
.vl-lead { font-size: 1.1rem; line-height: 1.8; color: var(--vl-grau); margin-bottom: 1.5rem; }
.vl-text { font-size: 1rem; line-height: 1.8; color: #333; margin-bottom: 1.2rem; }
.text-center { text-align: center; }
.text-weiss { color: #FFFFFF !important; }
.text-mint { color: var(--vl-mint) !important; }
.text-grau { color: var(--vl-grau) !important; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; } .mb-5 { margin-bottom: 3rem; }
.mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* ── Buttons ───────────────────────────────────────────── */
.btn {
    display: inline-block; text-decoration: none; border: none;
    border-radius: 25px; padding: 12px 28px; font-size: 15px;
    font-weight: 700; cursor: pointer; transition: all 0.2s;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-mint { background-color: var(--vl-mint); color: #FFFFFF; }
.btn-mint:hover { background-color: #0A5040; color: #FFFFFF; }
.btn-blau { background-color: var(--vl-dunkelblau); color: #FFFFFF; }
.btn-blau:hover { background-color: var(--vl-hellblau); color: #FFFFFF; }
.btn-weiss { background-color: #FFFFFF; color: var(--vl-mint); }
.btn-weiss:hover { background-color: #F0F4FF; color: var(--vl-mint); }
.btn-outline { background-color: transparent; color: #FFFFFF;
    border: 2px solid #FFFFFF; }
.btn-outline:hover { background-color: rgba(255,255,255,0.15); color: #FFFFFF; }
.btn-lg { padding: 15px 36px; font-size: 17px; }
.btn-sm { padding: 8px 20px; font-size: 13px; }

/* ── Badge ─────────────────────────────────────────────── */
.badge-mint {
    display: inline-block; background-color: var(--vl-mintell);
    color: var(--vl-mint); border-radius: 20px; padding: 6px 18px;
    font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem;
}
.badge-blau {
    display: inline-block; background-color: var(--vl-hellgrau);
    color: var(--vl-dunkelblau); border-radius: 20px; padding: 6px 18px;
    font-size: 0.95rem; font-weight: 700; margin-bottom: 1rem;
}

/* ── Karten ────────────────────────────────────────────── */
.card {
    background-color: #FFFFFF; border-radius: 12px;
    padding: 28px 24px; height: 100%;
    box-shadow: 0 3px 14px rgba(26,58,138,0.08);
    transition: transform 0.2s;
}
.card:hover { transform: translateY(-4px); }
.card-mint { border-top: 4px solid var(--vl-mint); }
.card-blau { border-top: 4px solid var(--vl-dunkelblau); }
.card-left { border-left: 5px solid var(--vl-mint);
    background-color: var(--vl-hellgrau); border-radius: 0 8px 8px 0; box-shadow: none; }
.card-left:hover { transform: none; }
.card .icon { font-size: 2.6rem; margin-bottom: 1rem; display: block; }
.card .nr {
    width: 46px; height: 46px; background-color: var(--vl-mint);
    color: #FFFFFF; border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 900; margin: 0 auto 1rem;
}
.card-dunkel {
    background-color: rgba(255,255,255,0.07);
    border-top: 4px solid var(--vl-mint);
    border-radius: 10px; padding: 28px 24px; height: 100%;
}

/* ── Grid ──────────────────────────────────────────────── */
.row { display: flex; flex-wrap: wrap; margin: 0 -12px; }
.col { padding: 0 12px; flex: 1; }
.col-1  { padding: 0 12px; flex: 0 0 8.33%;   max-width: 8.33%; }
.col-2  { padding: 0 12px; flex: 0 0 16.66%;  max-width: 16.66%; }
.col-3  { padding: 0 12px; flex: 0 0 25%;     max-width: 25%; }
.col-4  { padding: 0 12px; flex: 0 0 33.33%;  max-width: 33.33%; }
.col-5  { padding: 0 12px; flex: 0 0 41.66%;  max-width: 41.66%; }
.col-6  { padding: 0 12px; flex: 0 0 50%;     max-width: 50%; }
.col-7  { padding: 0 12px; flex: 0 0 58.33%;  max-width: 58.33%; }
.col-8  { padding: 0 12px; flex: 0 0 66.66%;  max-width: 66.66%; }
.col-9  { padding: 0 12px; flex: 0 0 75%;     max-width: 75%; }
.col-10 { padding: 0 12px; flex: 0 0 83.33%;  max-width: 83.33%; }
.col-12 { padding: 0 12px; flex: 0 0 100%;    max-width: 100%; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-3 { gap: 24px; }
.mb-col-4 { margin-bottom: 24px; }

/* ── Hero ──────────────────────────────────────────────── */
.hero {
    min-height: 100vh;
    background-image: linear-gradient(rgba(20,35,75,0.68), rgba(10,80,60,0.48)),
                      url('img/hero-tcpo2-messung.jpg');
    background-size: cover; background-position: center;
    display: flex; align-items: center; text-align: center;
    padding: 100px 24px;
}
.hero-inner { max-width: 820px; margin: 0 auto; }
.hero h1 {
    font-size: 3.6rem; font-weight: 900; color: #FFFFFF;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
    margin-bottom: 1.2rem; line-height: 1.1;
}
.hero h2, .hero .hero-sub {
    font-size: 1.35rem; color: #D0EAE4; font-weight: 400;
    line-height: 1.75; margin-bottom: 2rem;
}
.hero .btn-group { display: flex; gap: 16px;
    justify-content: center; flex-wrap: wrap; }

/* ── Zitat ─────────────────────────────────────────────── */
.zitat {
    padding: 56px 0; background-color: var(--vl-dunkelblau); text-align: center;
}
.zitat blockquote {
    font-size: 1.4rem; font-style: italic; font-weight: 300;
    color: #FFFFFF; max-width: 820px; margin: 0 auto 1.5rem;
    line-height: 1.7; border: none; padding: 0;
}
.zitat blockquote strong { color: #4ACAA8; font-weight: 700; }
.trust-row { display: flex; justify-content: center;
    flex-wrap: wrap; gap: 32px; margin-top: 1.2rem; }
.trust-item { color: rgba(255,255,255,0.7); font-size: 0.9rem;
    display: flex; align-items: center; gap: 8px; }
.trust-dot { width: 8px; height: 8px; background-color: var(--vl-mint);
    border-radius: 50%; display: inline-block; }

/* ── Trennlinie ────────────────────────────────────────── */
.trenn { border: none; border-top: 2px solid var(--vl-mint);
    margin: 0 0 2rem; opacity: 0.3; }

/* ── Tabelle ───────────────────────────────────────────── */
.vl-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; }
.vl-table th {
    background-color: var(--vl-dunkelblau); color: #FFFFFF;
    padding: 12px 16px; text-align: left; font-size: 14px;
}
.vl-table td { padding: 11px 16px; font-size: 14px;
    border-bottom: 1px solid #DDEBF0; }
.vl-table tr:nth-child(even) td { background-color: var(--vl-hellgrau); }
.vl-table .td-mint { color: var(--vl-mint); font-weight: 700; }

/* ── Formular ──────────────────────────────────────────── */
.vl-input {
    width: 100%; border: 2px solid #C8D8E8; border-radius: 8px;
    padding: 12px 16px; font-size: 15px; margin-bottom: 14px;
    background-color: #FFFFFF; font-family: Arial, sans-serif;
    transition: border-color 0.2s; display: block;
}
.vl-input:focus { border-color: var(--vl-mint); outline: none; }
.vl-input.textarea { resize: vertical; min-height: 110px; }
.btn-submit {
    background-color: var(--vl-mint); color: #FFFFFF; border: none;
    border-radius: 25px; padding: 14px 36px; font-size: 16px;
    font-weight: 700; width: 100%; cursor: pointer;
    transition: all 0.2s; font-family: Arial, sans-serif;
}
.btn-submit:hover { background-color: #0A5040; transform: translateY(-2px); }

/* ── Kontakt-Info ──────────────────────────────────────── */
.kontakt-item { display: flex; align-items: flex-start;
    gap: 16px; margin-bottom: 24px; }
.kontakt-icon {
    width: 48px; height: 48px; background-color: var(--vl-hellblau);
    border-radius: 50%; display: flex; align-items: center;
    justify-content: center; font-size: 1.3rem; flex-shrink: 0;
}
.kontakt-text strong { color: var(--vl-dunkelblau);
    display: block; font-size: 0.85rem; margin-bottom: 2px; }
.kontakt-text a, .kontakt-text span {
    color: var(--vl-grau); font-size: 1rem; text-decoration: none; }
.kontakt-text a:hover { color: var(--vl-mint); }

/* ── Footer ────────────────────────────────────────────── */
.vl-footer {
    background-color: #0D1A3A; padding: 28px 0; text-align: center;
}
.vl-footer p { color: rgba(255,255,255,0.45); font-size: 0.82rem; margin: 0; }
.vl-footer a {
    color: rgba(255,255,255,0.55); text-decoration: none;
    margin: 0 10px; font-size: 0.82rem;
}
.vl-footer a:hover { color: #4ACAA8; }

/* ── Zwei-Spalten Zielgruppen ──────────────────────────── */
.split-row { display: flex; flex-wrap: wrap; }
.split-mint { background-color: var(--vl-mint);
    padding: 72px 56px; flex: 1 1 50%; }
.split-blau { background-color: var(--vl-dunkelblau);
    padding: 72px 56px; flex: 1 1 50%; }
.split-mint h2, .split-blau h2 { color: #FFFFFF; }
.split-mint p, .split-blau p { color: rgba(255,255,255,0.85);
    font-size: 1rem; line-height: 1.8; margin-bottom: 1.5rem; }
.split-icon { font-size: 3rem; margin-bottom: 1.2rem; display: block; }

/* ── Page-Header (Unterseiten) ─────────────────────────── */
.page-header {
    background-image: linear-gradient(rgba(20,35,75,0.8), rgba(10,80,60,0.6)),
                      url('img/header-tcpo2.jpg');
    background-size: cover; background-position: center;
    padding: 80px 24px; text-align: center;
}
.page-header h1 {
    font-size: 2.6rem; font-weight: 900; color: #FFFFFF;
    text-shadow: 1px 1px 8px rgba(0,0,0,0.4); margin-bottom: 0.8rem;
}
.page-header p { color: #D0EAE4; font-size: 1.1rem; max-width: 600px;
    margin: 0 auto; line-height: 1.7; }

/* ═══ Ergänzungen tcpo2.de ═══════════════════════════════ */

/* Lange deutsche Fachwörter umbrechen */
h1, h2, h3, .vl-h2, .vl-h3 { hyphens: auto; -webkit-hyphens: auto; overflow-wrap: break-word; }

/* Button-Reihe zentriert */
.btn-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Mobile Menü (ohne JavaScript) */
.nav-toggle { display: none; }
.nav-burger { display: none; color: #FFFFFF; font-size: 28px; cursor: pointer;
    padding: 4px 10px; user-select: none; }

/* Produktkarten */
.produkt-bild { display: block; margin: 0 auto 1.2rem; max-height: 260px; width: auto; }
.fakten { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.fakten li { padding: 7px 0 7px 26px; position: relative; line-height: 1.6;
    border-bottom: 1px solid #E3ECF3; color: #333; }
.fakten li:last-child { border-bottom: none; }
.fakten li::before { content: "✓"; position: absolute; left: 0; top: 7px;
    color: var(--vl-mint); font-weight: 900; }
.fakten.minus li::before { content: "–"; }

/* Anwendungs-Chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip { background-color: #FFFFFF; border: 2px solid var(--vl-mintell);
    color: var(--vl-dunkelblau); border-radius: 20px; padding: 8px 18px;
    font-weight: 700; font-size: 0.95rem; }

/* Galerie Messpunkte */
.galerie { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.galerie figure { margin: 0; background: #FFFFFF; border-radius: 12px; overflow: hidden;
    box-shadow: 0 3px 14px rgba(26,58,138,0.08); }
.galerie img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.galerie figcaption { padding: 12px 16px; font-weight: 700; color: var(--vl-dunkelblau); }

/* Bild-Text-Block */
.bild-rund { border-radius: 12px; box-shadow: 0 8px 32px rgba(26,58,138,0.15); width: 100%; }
.bild-frei { width: 100%; height: auto; }

/* Schritte */
.schritte { counter-reset: schritt; list-style: none; padding: 0; margin: 0; }
.schritte li { counter-increment: schritt; position: relative; padding: 14px 0 14px 62px;
    border-bottom: 1px solid #DDEBF0; line-height: 1.7; color: #333; }
.schritte li::before { content: counter(schritt); position: absolute; left: 0; top: 10px;
    width: 42px; height: 42px; border-radius: 50%; background: var(--vl-mint); color: #FFFFFF;
    font-weight: 900; display: flex; align-items: center; justify-content: center; }

/* Downloads */
.download { display: flex; align-items: center; gap: 14px; text-decoration: none;
    background: #FFFFFF; border-radius: 10px; padding: 16px 18px; height: 100%;
    box-shadow: 0 3px 14px rgba(26,58,138,0.08); transition: transform 0.2s; }
.download:hover { transform: translateY(-3px); }
.download .dl-icon { width: 46px; height: 46px; border-radius: 8px; flex-shrink: 0;
    background: var(--vl-mintell); color: var(--vl-mint); display: flex;
    align-items: center; justify-content: center; font-weight: 900; font-size: 0.75rem; }
.download strong { display: block; color: var(--vl-dunkelblau); }
.download span { color: var(--vl-grau); font-size: 0.85rem; }

/* FAQ */
.faq details { background: #FFFFFF; border-radius: 10px; margin-bottom: 12px;
    box-shadow: 0 2px 10px rgba(26,58,138,0.06); }
.faq summary { cursor: pointer; padding: 18px 52px 18px 22px; font-weight: 700;
    color: var(--vl-dunkelblau); list-style: none; position: relative; font-size: 1.05rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 22px; top: 14px;
    font-size: 1.5rem; color: var(--vl-mint); }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 22px 18px; margin: 0; line-height: 1.8; color: #333; }

/* Bewertungsskala Normwerte */
.skala { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.skala div { border-radius: 10px; padding: 18px; color: #FFFFFF; }
.skala strong { display: block; font-size: 1.4rem; margin-bottom: 4px; }
.skala .s1 { background: #0F6E56; } .skala .s2 { background: #B7861A; }
.skala .s3 { background: #C2551F; } .skala .s4 { background: #A32020; }

/* Hinweisbox */
.hinweis { background: var(--vl-mintell); border-left: 5px solid var(--vl-mint);
    border-radius: 0 8px 8px 0; padding: 16px 20px; color: #24453C; line-height: 1.7; }

/* Tabelle scrollbar auf Mobil */
.table-wrap { overflow-x: auto; }

/* Kontaktspalte */
.kontakt-spalte { padding-left: 48px; }
.kontakt-box { margin-top: 60px; }

/* Footer mehrspaltig */
.vl-footer .footer-adresse { color: rgba(255,255,255,0.6); font-size: 0.85rem;
    line-height: 1.7; margin-bottom: 14px; }
.vl-footer .footer-adresse a { margin: 0; }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 900px) {
    .col-3, .col-4 { flex: 0 0 50%; max-width: 50%; }
    .col-6, .col-7, .col-8 { flex: 0 0 100%; max-width: 100%; }
    .col-5 { flex: 0 0 100%; max-width: 100%; }
    .split-mint, .split-blau { flex: 1 1 100%; padding: 52px 32px; }
    .hero h1, .vl-h1 { font-size: 2.2rem; }
    .vl-nav .btn-tel { display: none; }
    .galerie { grid-template-columns: repeat(2, 1fr); }
    .skala { grid-template-columns: repeat(2, 1fr); }
    .nav-burger { display: block; }
    .vl-nav ul { display: none; width: 100%; flex-direction: column;
        align-items: stretch; padding: 8px 0; }
    .nav-toggle:checked ~ ul { display: flex; }
    .vl-nav .dropdown-menu { display: block; position: static; box-shadow: none;
        border: none; background: transparent; padding-left: 14px; }
    .vl-nav .dropdown > a { opacity: 0.6; pointer-events: none; }
}
@media (max-width: 600px) {
    .col-3, .col-4, .col-6 { flex: 0 0 100%; max-width: 100%; }
    section { padding: 48px 0; }
    .page-header { padding: 60px 24px; }
    .page-header h1 { font-size: 1.9rem; }
    .galerie, .skala { grid-template-columns: 1fr; }
    .vl-h2 { font-size: 1.6rem; }
    .btn { white-space: normal; text-align: center; }
    .row { margin: 0; }
    .row > [class*="col-"] { padding: 0; }
    .kontakt-item { margin-bottom: 18px; }
    .kontakt-spalte { padding-left: 0 !important; }
    .kontakt-box { margin-top: 24px; }
    .hero h2, .hero .hero-sub { font-size: 1.1rem; }
    .split-mint, .split-blau { padding: 44px 24px; }
}