/* ==========================================================================
   Vosskamp Haustechnik – Heizung, Sanitär, Wärmepumpen
   Gestaltungsidee: Ruhige Kompetenz. Warmes Anthrazit statt Marineblau,
   Salbeigrün statt Signalorange – das Thema ist Energie sparen, nicht
   Alarm schlagen. Zahlen statt Adjektive.
   ========================================================================== */

:root {
    --nacht:    #1B1A18;   /* warmes Anthrazit, kein Blaustich */
    --nacht-2:  #232220;
    --nacht-3:  #2E2C29;
    --linie:    #3A3835;
    --hell:     #F6F4F1;
    --hell-2:   #B6B1AA;
    --hell-3:   #807B74;

    --gruen:    #6E8F6B;   /* Salbei – Hauptakzent */
    --gruen-2:  #587653;
    --gruen-3:  #3F5C3D;
    --kupfer:   #B5825A;   /* zweiter Akzent, warm */
    --sand:     #D8CFC2;

    /* Namen aus der ersten Fassung bleiben erhalten, damit nichts bricht */
    --orange:   #6E8F6B;
    --orange-2: #587653;
    --stahl:    #B5825A;

    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
            Helvetica, Arial, sans-serif;
    --mono: "SF Mono", "Segoe UI Mono", "Roboto Mono", ui-monospace, monospace;
}

body.ref-seite { background: var(--nacht); color: var(--hell); font-family: var(--sans); }

.vk-wrap { width: min(100% - 2.5rem, 1220px); margin-inline: auto; }

h1, h2, h3 { font-weight: 800; letter-spacing: -.025em; line-height: 1.08; }

.vk-marke {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--orange);
}
.vk-marke::before {
    content: '';
    width: 26px; height: 2px;
    background: var(--orange);
    display: block;
}

/* --------------------------------------------------------------- Kopf -- */
.vk-kopf {
    position: sticky; top: 0; z-index: 100;
    background: rgba(18, 23, 30, .93);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--linie);
}
.vk-kopf .vk-wrap {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1.5rem; padding: .9rem 0;
}
.vk-logo { display: flex; align-items: center; gap: .75rem; color: var(--hell); }
.vk-logo-zeichen {
    width: 40px; height: 40px;
    background: var(--gruen);
    display: grid; place-items: center;
    font-weight: 900; font-size: 1.15rem; color: #fff;
    border-radius: 10px 10px 10px 3px;
}
.vk-logo b { display: block; font-size: 1.02rem; font-weight: 800; letter-spacing: -.01em; line-height: 1.1; }
.vk-logo span { display: block; font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: var(--hell-3); margin-top: .15rem; }

.vk-nav { display: flex; align-items: center; gap: 1.6rem; font-size: .92rem; }
.vk-nav a { color: var(--hell-2); font-weight: 550; transition: color .2s; }
.vk-nav a:hover { color: var(--hell); }
.vk-nav .vk-knopf { color: #fff; }
@media (max-width: 860px) { .vk-nav a:not(.vk-knopf) { display: none; } }

.vk-knopf {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .82rem 1.5rem;
    background: var(--orange); color: #fff;
    border: 0; font-family: var(--sans);
    font-size: .9rem; font-weight: 700;
    border-radius: 2px;
    transition: background .2s, transform .18s;
}
.vk-knopf:hover { background: var(--orange-2); transform: translateY(-1px); }
.vk-knopf-2 {
    background: transparent; color: var(--hell);
    border: 1px solid var(--linie);
}
.vk-knopf-2:hover { background: var(--nacht-3); border-color: var(--hell-3); }

/* --------------------------------------------------------------- Hero -- */
.vk-hero {
    position: relative;
    padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(3rem, 7vw, 5rem);
    overflow: hidden;
    isolation: isolate;
}
/* Echtes Foto als Grund, abgedunkelt damit der Text trägt */
.vk-hero-foto {
    position: absolute;
    inset: 0;
    z-index: -2;
}
.vk-hero-foto img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: 62% 55%;
}
.vk-hero-foto::after {
    content: '';
    position: absolute; inset: 0;
    background:
        linear-gradient(100deg, var(--nacht) 6%, rgba(18,23,30,.94) 42%, rgba(18,23,30,.55) 78%),
        linear-gradient(0deg, var(--nacht) 2%, transparent 40%);
}
/* technisches Raster darüber */
.vk-hero::before {
    content: '';
    position: absolute; inset: 0; z-index: -1;
    background-image:
        linear-gradient(rgba(110, 143, 107, .09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(110, 143, 107, .09) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: linear-gradient(160deg, #000 8%, transparent 55%);
    -webkit-mask-image: linear-gradient(160deg, #000 8%, transparent 55%);
}

.vk-hero-inhalt { position: relative; z-index: 1; }

.vk-hero-gitter {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: center;
}
.vk-hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.3rem);
    margin: 1.5rem 0 1.4rem;
}
.vk-hero h1 mark {
    background: none;
    color: var(--orange);
}
.vk-hero-text {
    font-size: 1.1rem;
    line-height: 1.68;
    color: var(--hell-2);
    max-width: 46ch;
    margin-bottom: 2.2rem;
}
.vk-hero-knoepfe { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2.6rem; }

.vk-siegel { display: flex; flex-wrap: wrap; gap: 1.6rem; }
.vk-siegel-teil { display: flex; align-items: center; gap: .6rem; font-size: .88rem; color: var(--hell-2); }
.vk-siegel-teil i {
    width: 30px; height: 30px; flex: none;
    background: var(--nacht-3); border: 1px solid var(--linie);
    display: grid; place-items: center;
    color: var(--gruen); font-style: normal; font-size: .85rem;
}

/* Förderrechner im Hero – helle, freundliche Karte.
   Die Botschaft ist eine gute Nachricht („Sie bekommen Geld"), deshalb
   bewusst hell und einladend statt technisch-dunkel. */
.vk-rechner {
    background: #FBFAF8;
    color: #1F2833;
    border: 1px solid #E6E2DA;
    border-radius: 18px;
    padding: 1.9rem;
    box-shadow: 0 34px 80px -34px rgba(0, 0, 0, .8);
}
.vk-rechner-kopf {
    display: flex; align-items: baseline; justify-content: space-between;
    gap: 1rem; margin-bottom: 1.6rem;
    padding-bottom: 1.1rem; border-bottom: 1px solid #EFEBE4;
}
.vk-rechner-kopf h3 { font-size: 1.22rem; color: #1F2833; letter-spacing: -.02em; }
.vk-rechner-kopf span {
    font-size: .72rem; letter-spacing: .13em; text-transform: uppercase;
    color: #98A1AC; font-weight: 600;
}

.vk-feld { margin-bottom: 1.4rem; }
.vk-feld label {
    display: flex; justify-content: space-between; align-items: baseline; gap: .8rem;
    font-size: .9rem; color: #52606F; font-weight: 550; margin-bottom: .7rem;
}
.vk-feld label b {
    color: #1F2833; font-family: var(--sans);
    font-variant-numeric: tabular-nums;
    font-size: 1.12rem; font-weight: 750; white-space: nowrap;
}
.vk-feld input[type=range] {
    -webkit-appearance: none; appearance: none;
    width: 100%; height: 6px; border-radius: 999px;
    background: #E8E4DC;
    outline: none; cursor: pointer;
}
.vk-feld input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none;
    width: 24px; height: 24px; border-radius: 50%;
    background: #fff; border: 5px solid var(--orange);
    box-shadow: 0 3px 12px rgba(110, 143, 107, .4);
    cursor: grab;
}
.vk-feld input[type=range]::-moz-range-thumb {
    width: 24px; height: 24px; border-radius: 50%;
    background: #fff; border: 5px solid var(--orange);
    box-shadow: 0 3px 12px rgba(110, 143, 107, .4); cursor: grab;
}

/* Ja/Nein als weiche Segmente */
.vk-schalter {
    display: flex; gap: 4px;
    background: #F0EDE7;
    padding: 4px; border-radius: 999px;
}
.vk-schalter button {
    flex: 1; padding: .62rem .4rem;
    background: transparent; border: 0; border-radius: 999px;
    color: #6B7684; font-size: .9rem; font-weight: 650;
    transition: all .2s;
}
.vk-schalter button:hover { color: #1F2833; }
.vk-schalter button.aktiv {
    background: #fff; color: #1F2833;
    box-shadow: 0 2px 8px rgba(31, 40, 51, .12);
}

.vk-ergebnis {
    margin-top: 1.7rem; padding-top: 1.4rem;
    border-top: 1px solid #EFEBE4;
}
.vk-ergebnis-zeile {
    display: flex; justify-content: space-between; gap: 1rem;
    padding: .46rem 0; font-size: .92rem; color: #52606F;
}
.vk-ergebnis-zeile b {
    color: #1F2833; font-variant-numeric: tabular-nums; font-weight: 650;
}
.vk-ergebnis-summe {
    display: flex; justify-content: space-between; gap: 1rem;
    margin-top: .5rem; padding: .7rem .9rem;
    background: rgba(181, 130, 90, .11);
    border-radius: 10px;
    font-size: .95rem; font-weight: 700; color: #8C5F3B;
}
.vk-ergebnis-summe b { color: #8C5F3B; font-variant-numeric: tabular-nums; }

.vk-ergebnis-gross {
    display: flex; justify-content: space-between; align-items: center; gap: 1rem;
    margin-top: 1rem; padding: 1.1rem 1.2rem;
    background: linear-gradient(120deg, #EEF2EC, #E4EBE1);
    border: 1px solid #CBD9C6;
    border-radius: 12px;
}
.vk-ergebnis-gross span { font-size: .92rem; color: #4A6647; font-weight: 600; }
.vk-ergebnis-gross b {
    font-size: 2rem; font-weight: 800;
    color: #3F5C3D; letter-spacing: -.03em;
    font-variant-numeric: tabular-nums;
}
.vk-rechner-fuss {
    font-size: .77rem; color: #8A929C;
    margin-top: 1.1rem; line-height: 1.55;
}

/* --------------------------------------------------------- Abschnitte -- */
.vk-abschnitt { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.vk-abschnitt-2 { background: var(--nacht-2); }
.vk-kopfzeile { max-width: 58ch; margin-bottom: clamp(2.2rem, 5vw, 3.2rem); }
.vk-kopfzeile h2 { font-size: clamp(1.9rem, 4.4vw, 2.9rem); margin: 1rem 0 .9rem; }
.vk-kopfzeile p { color: var(--hell-2); font-size: 1.03rem; line-height: 1.68; }

/* Leistungen */
.vk-leistungen { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--linie); border: 1px solid var(--linie); }
.vk-leistung { background: var(--nacht); padding: 2rem 1.8rem; transition: background .25s; }
.vk-leistung:hover { background: var(--nacht-3); }
.vk-leistung-nr { font-family: var(--mono); font-size: .8rem; color: var(--orange); margin-bottom: 1rem; display: block; }
.vk-leistung h3 { font-size: 1.2rem; margin-bottom: .7rem; }
.vk-leistung p { color: var(--hell-2); font-size: .94rem; line-height: 1.62; }

/* Zahlen */
.vk-zahlen { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--linie); border: 1px solid var(--linie); }
.vk-zahl { background: var(--nacht-2); padding: 1.8rem 1.5rem; }
.vk-zahl b {
    display: block; font-family: var(--mono);
    font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 800;
    color: var(--orange); letter-spacing: -.04em; line-height: 1;
}
.vk-zahl span { display: block; font-size: .86rem; color: var(--hell-2); margin-top: .6rem; line-height: 1.45; }

/* Referenzprojekte */
.vk-projekte { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.vk-projekt {
    background: var(--nacht-2);
    border: 1px solid var(--linie);
    border-left: 3px solid var(--stahl);
    overflow: hidden;
}
.vk-projekt-bild {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-bottom: 1px solid var(--linie);
}
.vk-projekt-bild img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .5s cubic-bezier(.22,.8,.32,1);
}
.vk-projekt:hover .vk-projekt-bild img { transform: scale(1.04); }
.vk-projekt-text { padding: 1.5rem 1.6rem 1.7rem; }
.vk-projekt-typ { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--stahl); margin-bottom: .8rem; display: block; }
.vk-projekt h3 { font-size: 1.08rem; margin-bottom: 1rem; }
.vk-projekt-werte { display: grid; gap: .5rem; }
.vk-projekt-wert { display: flex; justify-content: space-between; gap: 1rem; font-size: .88rem; color: var(--hell-2); }
.vk-projekt-wert b { font-family: var(--mono); color: var(--hell); }

/* Beratungstermin */
.vk-termin {
    background: var(--nacht-2);
    border: 1px solid var(--linie);
    border-top: 3px solid var(--orange);
}
.vk-termin-gitter { display: grid; grid-template-columns: .9fr 1.1fr; }
.vk-termin-links { padding: clamp(1.8rem, 4vw, 2.8rem); border-right: 1px solid var(--linie); }
.vk-termin-rechts { padding: clamp(1.8rem, 4vw, 2.8rem); }
.vk-termin-links h3 { font-size: 1.5rem; margin: 1rem 0 1rem; }
.vk-termin-links p { color: var(--hell-2); font-size: .98rem; line-height: 1.68; margin-bottom: 1.6rem; }
.vk-termin-punkte { display: grid; gap: .8rem; }
.vk-termin-punkt { display: flex; gap: .8rem; align-items: flex-start; font-size: .92rem; color: var(--hell-2); }
.vk-termin-punkt i { color: var(--orange); font-style: normal; flex: none; }

.vk-art { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-bottom: 1.5rem; }
.vk-art-karte {
    padding: 1.2rem 1rem; text-align: left;
    background: var(--nacht-3); border: 1px solid var(--linie);
    transition: all .2s;
}
.vk-art-karte:hover, .vk-art-karte.gewaehlt { border-color: var(--orange); background: rgba(110,143,107,.12); }
.vk-art-karte b { display: block; font-size: .98rem; margin-bottom: .25rem; }
.vk-art-karte span { font-size: .82rem; color: var(--hell-3); }

.vk-slots { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; margin-bottom: 1.4rem; }
.vk-slot {
    padding: .85rem .8rem; text-align: left;
    background: var(--nacht-3); border: 1px solid var(--linie);
    font-size: .9rem; transition: all .2s;
}
.vk-slot b { display: block; font-weight: 700; }
.vk-slot span { font-size: .8rem; color: var(--hell-3); }
.vk-slot:hover:not(:disabled) { border-color: var(--orange); }
.vk-slot.gewaehlt { border-color: var(--orange); background: rgba(110,143,107,.16); }
.vk-slot:disabled { opacity: .32; cursor: not-allowed; }

.vk-formular { display: grid; gap: .7rem; }
.vk-formular input {
    width: 100%; padding: .85rem 1rem;
    background: var(--nacht-3); border: 1px solid var(--linie);
    color: var(--hell); font: inherit; font-size: .93rem;
}
.vk-formular input:focus { outline: none; border-color: var(--orange); }
.vk-formular input::placeholder { color: var(--hell-3); }

.vk-bestaetigt { text-align: center; padding: 2rem 0; }
.vk-bestaetigt-zeichen {
    width: 58px; height: 58px; margin: 0 auto 1.2rem;
    background: rgba(34,160,107,.16); color: var(--gruen);
    display: grid; place-items: center; font-size: 1.6rem;
}
.vk-bestaetigt h3 { font-size: 1.4rem; margin-bottom: .7rem; }
.vk-bestaetigt p { color: var(--hell-2); font-size: .95rem; line-height: 1.65; max-width: 40ch; margin: 0 auto 1.4rem; }
.vk-bestaetigt-daten {
    background: var(--nacht-3); border-left: 2px solid var(--gruen);
    padding: 1.1rem 1.3rem; text-align: left; margin-bottom: 1.2rem;
}
.vk-bestaetigt-daten div { display: flex; justify-content: space-between; gap: 1rem; padding: .35rem 0; font-size: .9rem; }
.vk-bestaetigt-daten span { color: var(--hell-3); }
.vk-bestaetigt-daten b { text-align: right; }

/* Fußzeile */
.vk-fuss { background: var(--nacht-2); border-top: 1px solid var(--linie); padding: clamp(2.8rem,6vw,4rem) 0 1.8rem; }
.vk-fuss-gitter { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2.2rem; padding-bottom: 2.2rem; }
.vk-fuss h4 { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--orange); margin-bottom: .9rem; }
.vk-fuss p, .vk-fuss li { color: var(--hell-2); font-size: .9rem; line-height: 1.75; }
.vk-fuss-unten {
    border-top: 1px solid var(--linie); padding-top: 1.4rem;
    display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
    font-size: .82rem; color: var(--hell-3);
}

@media (max-width: 980px) {
    .vk-hero-gitter { grid-template-columns: 1fr; }
    .vk-leistungen, .vk-projekte { grid-template-columns: 1fr; }
    .vk-zahlen { grid-template-columns: repeat(2, 1fr); }
    .vk-termin-gitter { grid-template-columns: 1fr; }
    .vk-termin-links { border-right: 0; border-bottom: 1px solid var(--linie); }
    .vk-fuss-gitter { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
    .vk-zahlen, .vk-art, .vk-slots, .vk-fuss-gitter { grid-template-columns: 1fr; }
}