/* ============================================================
   knx-tc.de — Marketing-Site Stylesheet
   ============================================================ */

:root {
    --knx-green: #0a8a3e;
    --knx-green-dark: #076a2f;
    --knx-green-soft: #f1f9ee;
    --ink: #1a1a1a;
    --ink-soft: #4a4a4a;
    --ink-mute: #767676;
    --line: #e8e8e6;
    --bg: #ffffff;
    --bg-soft: #f7f7f5;
    --max: 1180px;
    --pad-x: clamp(20px, 4vw, 48px);
    --pad-y: clamp(56px, 8vw, 112px);
    --radius-card: 14px;
    --radius-card-lg: 16px;
    --radius-input: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.7rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }
p  { margin: 0; }

.container {
    max-width: var(--max);
    margin: 0 auto;
    padding-left: var(--pad-x);
    padding-right: var(--pad-x);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--knx-green);
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-block;
    padding: 14px 26px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
    border: 1.5px solid transparent;
    cursor: pointer;
}
.btn-primary { background: var(--knx-green); color: #fff; }
.btn-primary:hover { background: var(--knx-green-dark); transform: translateY(-1px); }
.btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-link {
    color: var(--knx-green);
    font-weight: 600;
    border-bottom: 1.5px solid currentColor;
    padding-bottom: 2px;
}
.btn-link:hover { color: var(--knx-green-dark); }

/* ---------- HEADER ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
}
.site-header .container {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 18px; padding-bottom: 18px;
}
.logo {
    display: inline-flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 1.05rem; letter-spacing: -0.01em;
    color: var(--ink);
}
.logo-mark {
    display: inline-block; width: 30px; height: 30px;
    background: var(--knx-green); border-radius: 6px;
    position: relative;
}
.logo-mark::after {
    content: "knx";
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 0.78rem; font-weight: 700; letter-spacing: -0.03em;
}
.nav {
    display: flex; gap: 28px; align-items: center;
    font-size: 0.95rem;
}
.nav a { color: var(--ink-soft); }
.nav a:hover { color: var(--ink); }
.nav a.is-active { color: var(--ink); font-weight: 600; }
.nav .btn { padding: 10px 18px; font-size: 0.9rem; }
@media (max-width: 760px) {
    .nav { gap: 14px; }
    .nav .nav-link { display: none; }
}

/* ---------- HERO ---------- */
.hero {
    padding-top: clamp(80px, 10vw, 140px);
    padding-bottom: var(--pad-y);
    background:
        radial-gradient(ellipse at 80% 0%, rgba(10, 138, 62, 0.08), transparent 50%),
        radial-gradient(ellipse at 0% 100%, rgba(10, 138, 62, 0.04), transparent 50%),
        #fff;
}
.hero .eyebrow { margin-bottom: 20px; display: inline-block; }
.hero h1 { max-width: 900px; margin-bottom: 28px; }
.hero h1 .accent { color: var(--knx-green); }
.hero .lede {
    max-width: 640px; color: var(--ink-soft);
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    margin-bottom: 36px;
}
.hero .cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- SECTION GENERIC ---------- */
.section { padding: var(--pad-y) 0; }
.section-soft { background: var(--bg-soft); }
.section-head {
    display: flex; align-items: end; justify-content: space-between; gap: 24px;
    margin-bottom: 48px; flex-wrap: wrap;
}
.section-head .head-text { max-width: 720px; }
.section-head .eyebrow { margin-bottom: 14px; display: inline-block; }
.section-head h2 { margin-bottom: 8px; }
.section-head p { color: var(--ink-soft); }

/* ---------- LERNPFAD: 4 Stufen ---------- */
.path-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
@media (max-width: 960px) { .path-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .path-grid { grid-template-columns: 1fr; } }

.path-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    position: relative;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.path-card:hover { border-color: var(--knx-green); transform: translateY(-2px); }
.path-step {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--knx-green-soft); color: var(--knx-green);
    font-weight: 700; font-size: 1.1rem;
    margin-bottom: 18px;
}
.path-card h3 { margin-bottom: 10px; }
.path-card p { color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 14px; }
.path-meta { color: var(--ink-mute); font-size: 0.85rem; }

/* ---------- MANIFEST ---------- */
.manifest-grid {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 40px 56px;
}
@media (max-width: 760px) { .manifest-grid { grid-template-columns: 1fr; gap: 32px; } }
.manifest-item .num {
    color: var(--knx-green); font-size: 0.85rem; font-weight: 700;
    letter-spacing: 0.05em; margin-bottom: 8px;
}
.manifest-item h3 { margin-bottom: 10px; }
.manifest-item p { color: var(--ink-soft); }

/* ---------- ZIELGRUPPEN ---------- */
.welt-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
@media (max-width: 900px) { .welt-grid { grid-template-columns: 1fr; } }
.welt-card {
    background: #fff;
    border-radius: var(--radius-card-lg);
    overflow: hidden;
    border: 1px solid var(--line);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.welt-card:hover { transform: translateY(-3px); box-shadow: 0 14px 40px rgba(0,0,0,0.06); }
.welt-card .visual {
    height: 200px;
    background: linear-gradient(135deg, var(--knx-green-soft), #e6f3df);
    display: flex; align-items: center; justify-content: center;
    color: var(--knx-green);
}
.welt-card.alt .visual { background: linear-gradient(135deg, #f3f3f0, #e8e8e2); color: var(--ink-mute); }
.welt-card.alt2 .visual { background: linear-gradient(135deg, #faf3e8, #f1e6d4); color: #a07c43; }
.welt-card .body { padding: 24px 26px 28px; }
.welt-card .eyebrow { margin-bottom: 8px; display: inline-block; }
.welt-card h3 { margin-bottom: 10px; }
.welt-card p { color: var(--ink-soft); margin-bottom: 16px; }

/* ---------- KURS-TERMINE ---------- */
.kurs-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
@media (max-width: 900px) { .kurs-grid { grid-template-columns: 1fr; } }
.kurs-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 26px 24px;
    display: flex; flex-direction: column; gap: 12px;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.kurs-card:hover { border-color: var(--knx-green); transform: translateY(-2px); }
.kurs-card .tag {
    display: inline-block; align-self: flex-start;
    background: var(--knx-green-soft); color: var(--knx-green);
    font-size: 0.78rem; font-weight: 600;
    padding: 4px 10px; border-radius: 999px;
}
.kurs-card .tag.full { background: #f5e6e6; color: #8a3a3a; }
.kurs-card .tag.warn { background: #fff4e0; color: #8a5a1a; }
.kurs-card h3 { font-size: 1.15rem; }
.kurs-card .when { color: var(--ink); font-weight: 600; font-size: 0.95rem; }
.kurs-card .where { color: var(--ink-mute); font-size: 0.9rem; }
.kurs-card .price { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.9rem; }
.kurs-card .price strong { color: var(--ink); font-size: 1.05rem; }
.kurs-card .actions { margin-top: 12px; }
.kurs-card .actions .btn { width: 100%; text-align: center; padding: 11px 18px; font-size: 0.9rem; }

/* ---------- 3 SCHRITTE ---------- */
.steps-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
@media (max-width: 760px) { .steps-grid { grid-template-columns: 1fr; gap: 24px; } }
.step .num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: 50%;
    border: 1.5px solid var(--knx-green); color: var(--knx-green);
    font-weight: 700; font-size: 1.1rem;
    margin-bottom: 16px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--ink-soft); }

/* ---------- KONTAKT-BANNER ---------- */
.contact-banner {
    background: var(--ink);
    color: #fff;
    border-radius: 20px;
    padding: clamp(40px, 6vw, 64px);
    display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center;
}
@media (max-width: 800px) { .contact-banner { grid-template-columns: 1fr; } }
.contact-banner h2 { color: #fff; margin-bottom: 14px; }
.contact-banner .lede { color: rgba(255,255,255,0.75); margin-bottom: 24px; }
.contact-banner .btn-primary { background: #fff; color: var(--ink); }
.contact-banner .btn-primary:hover { background: var(--knx-green); color: #fff; }
.contact-info { font-size: 0.95rem; line-height: 1.75; color: rgba(255,255,255,0.85); }
.contact-info strong { color: #fff; }
.contact-info a:hover { color: #fff; text-decoration: underline; }

/* ---------- FOOTER ---------- */
.site-footer {
    padding: 56px 0 32px;
    border-top: 1px solid var(--line);
    color: var(--ink-soft);
    font-size: 0.9rem;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px;
    margin-bottom: 40px;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-col h4 {
    font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--ink-mute); font-weight: 600; margin-bottom: 14px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    border-top: 1px solid var(--line); padding-top: 24px;
    display: flex; justify-content: space-between; gap: 16px;
    flex-wrap: wrap; color: var(--ink-mute); font-size: 0.85rem;
}

/* ============================================================
   ZUSÄTZE für Sub-Pages: Filter-UI, Forms, Text-Pages, Tabellen
   ============================================================ */

/* ---------- Filter-Bar (Jahresplaner) ---------- */
.filter-bar {
    display: flex; flex-wrap: wrap; gap: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card-lg);
    padding: 18px 20px;
    margin-bottom: 28px;
}
.filter-bar .filter-group {
    display: flex; flex-direction: column; gap: 6px;
    min-width: 160px;
}
.filter-bar label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-mute);
    font-weight: 600;
}
.filter-bar select,
.filter-bar input[type="text"],
.filter-bar input[type="date"] {
    border: 1px solid var(--line);
    border-radius: var(--radius-input);
    padding: 9px 12px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--ink);
    background: #fff;
    min-width: 160px;
}
.filter-bar select:focus,
.filter-bar input:focus {
    outline: none;
    border-color: var(--knx-green);
    box-shadow: 0 0 0 3px rgba(10, 138, 62, 0.12);
}
.filter-bar .filter-actions {
    display: flex; gap: 10px; align-items: end;
    margin-left: auto;
}

/* ---------- Tabelle (Jahresplaner) ---------- */
.kurs-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card-lg);
    overflow: hidden;
    font-size: 0.92rem;
}
.kurs-table th {
    text-align: left;
    background: var(--bg-soft);
    color: var(--ink-mute);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
}
.kurs-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}
.kurs-table tbody tr:last-child td { border-bottom: none; }
.kurs-table tbody tr:hover td { background: var(--bg-soft); }
.kurs-table .row-tag {
    display: inline-block;
    background: var(--knx-green-soft); color: var(--knx-green);
    font-size: 0.72rem; font-weight: 600;
    padding: 3px 9px; border-radius: 999px;
}
.kurs-table .row-tag.full { background: #f5e6e6; color: #8a3a3a; }
.kurs-table .row-tag.warn { background: #fff4e0; color: #8a5a1a; }

/* ---------- Forms (Kontakt) ---------- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 720px;
}
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }
.form-row { grid-column: span 2; }
.form-row.half { grid-column: span 1; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-mute);
    font-weight: 600;
}
.form-field input,
.form-field textarea,
.form-field select {
    border: 1px solid var(--line);
    border-radius: var(--radius-input);
    padding: 12px 14px;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--ink);
    background: #fff;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    outline: none;
    border-color: var(--knx-green);
    box-shadow: 0 0 0 3px rgba(10, 138, 62, 0.12);
}
.form-field textarea { min-height: 140px; resize: vertical; }
.form-actions { margin-top: 8px; }

/* ---------- Text-Page (Impressum, Datenschutz, AGB) ---------- */
.prose {
    max-width: 760px;
    color: var(--ink-soft);
    font-size: 1rem;
    line-height: 1.7;
}
.prose h2 { color: var(--ink); margin: 36px 0 14px; }
.prose h3 { color: var(--ink); margin: 28px 0 10px; font-size: 1.15rem; }
.prose p  { margin-bottom: 14px; }
.prose ul { padding-left: 22px; margin-bottom: 14px; }
.prose li { margin-bottom: 6px; }
.prose a  { color: var(--knx-green); border-bottom: 1px solid currentColor; }
.prose a:hover { color: var(--knx-green-dark); }
.prose strong { color: var(--ink); }

/* ---------- Alerts / Empty States ---------- */
.alert {
    border-radius: var(--radius-card);
    padding: 16px 20px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}
.alert-success { background: var(--knx-green-soft); color: var(--knx-green-dark); border: 1px solid #c8e2bd; }
.alert-error   { background: #fdecec; color: #8a3a3a; border: 1px solid #f3c8c8; }
.alert-info    { background: #eef4fa; color: #2a5a8a; border: 1px solid #cfdde9; }

.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--ink-mute);
}
.empty-state h3 { margin-bottom: 8px; color: var(--ink-soft); }

/* ---------- Page-Hero (kompakter Hero für Subseiten) ---------- */
.page-hero {
    padding-top: clamp(60px, 8vw, 100px);
    padding-bottom: clamp(36px, 5vw, 56px);
    background:
        radial-gradient(ellipse at 80% 0%, rgba(10, 138, 62, 0.06), transparent 50%),
        #fff;
}
.page-hero .eyebrow { margin-bottom: 16px; display: inline-block; }
.page-hero h1 { max-width: 800px; margin-bottom: 18px; font-size: clamp(2rem, 4vw, 3rem); }
.page-hero .lede { max-width: 640px; color: var(--ink-soft); font-size: 1.1rem; }