/* ============================================
   Wärmepumpen Service Ingo Gneist
   Modern Professional Website Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --clr-primary: #0e7c6b;
    --clr-primary-dark: #095e52;
    --clr-primary-light: #12a08a;
    --clr-primary-bg: #e8f5f1;
    --clr-accent: #1a73e8;
    --clr-accent-light: #e3effc;

    --clr-text: #1a2b3c;
    --clr-text-light: #4a5e72;
    --clr-text-muted: #7b8fa3;

    --clr-bg: #ffffff;
    --clr-bg-alt: #f4f7fa;
    --clr-bg-dark: #0f1c2e;
    --clr-bg-dark-2: #162438;

    --clr-border: #dde4ec;
    --clr-success: #28a745;
    --clr-error: #dc3545;
    --clr-warning: #f0ad4e;

    --ff-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 2rem;
    --fs-3xl: 2.5rem;
    --fs-4xl: 3.25rem;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.15);

    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;

    --nav-height: 80px;
    --container-max: 1200px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--ff-base);
    font-size: var(--fs-base);
    font-weight: var(--fw-regular);
    line-height: 1.7;
    color: var(--clr-text);
    background-color: var(--clr-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--clr-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--clr-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* --- Utility --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.required {
    color: var(--clr-error);
    font-weight: var(--fw-bold);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    font-family: var(--ff-base);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

.btn--primary {
    background: var(--clr-primary);
    color: #fff;
    border-color: var(--clr-primary);
}

.btn--primary:hover {
    background: var(--clr-primary-dark);
    border-color: var(--clr-primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--clr-primary);
    border-color: var(--clr-primary);
}

.btn--outline:hover {
    background: var(--clr-primary);
    color: #fff;
    border-color: var(--clr-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hero__actions .btn--outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.85);
    background: transparent;
    box-shadow: none;
}

.hero__actions .btn--outline:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: #fff;
}

.btn--large {
    padding: 1rem 2.5rem;
    font-size: var(--fs-md);
}

/* --- Section Header --- */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3.5rem;
}

.section-header__tag {
    display: inline-block;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--clr-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-header__title {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-header__desc {
    font-size: var(--fs-md);
    color: var(--clr-text-light);
    line-height: 1.7;
}

/* Einheitliche, deutlichere Unterseiten-Header */
.topic .section-header {
    max-width: 860px;
    margin: 0 auto 1.2rem;
    text-align: center;
}

.topic .section-header__title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin-bottom: 0.7rem;
    color: var(--clr-text);
    position: relative;
    display: inline-block;
    padding-bottom: 0.45rem;
}

.topic .section-header__desc {
    max-width: 760px;
    margin: 0 auto;
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--clr-text-light);
}

/* --- Scroll Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    background: #f6f7f9;
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    transition: box-shadow var(--transition), background var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
    background: #f2f4f7;
}

.header .nav__logo,
.header .nav__logo-text strong {
    color: var(--clr-text);
}

.header .nav__logo-text small {
    color: var(--clr-text-muted);
}

.header .nav__link {
    color: var(--clr-text-light);
}

.header .nav__link:hover {
    color: var(--clr-primary);
    background: var(--clr-primary-bg);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--clr-text);
    flex-shrink: 0;
}

.nav__logo-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.nav__logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.nav__logo-text strong {
    font-size: var(--fs-base);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
}

.nav__logo-text small {
    font-size: var(--fs-sm);
    color: var(--clr-text-muted);
    font-weight: var(--fw-regular);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav__link {
    display: block;
    padding: 0.5rem 1rem;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--clr-text-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav__link:hover {
    color: var(--clr-primary);
    background: var(--clr-primary-bg);
}

.nav__link--cta {
    background: var(--clr-primary);
    color: #fff !important;
    margin-left: 0.5rem;
    padding: 0.5rem 1.25rem;
}

.nav__link--cta:hover {
    background: var(--clr-primary-dark) !important;
    color: #fff !important;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--clr-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #0a2a1f;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background-image: url('../Bilder/pumpe.png');
    background-size: cover;
    background-repeat: no-repeat;
    /* Bild: Wand/Wärmepumpe sitzt rechts im Motiv – leicht nach rechts ausrichten,
       damit die Wand näher an der Viewport-Mitte liegt (statt Rasen/links als „Mitte“). */
    background-position: 58% 48%;
    transform-origin: center center;
    will-change: transform;
    transition: transform 0.1s linear;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background:
        linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0.4) 100%);
    z-index: 1;
}

.hero__overlay {
    display: none;
}

.hero__content {
    position: relative;
    z-index: 3;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
    align-items: center;
    color: #fff;
    padding: 8rem 1.5rem 4rem;
    will-change: transform, opacity;
}

.hero__main {
    text-align: center;
}

.hero__topics {
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: left;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.hero__topics-title {
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: var(--fw-bold);
    margin-bottom: 0.8rem;
}

.hero__topic-link {
    display: block;
    color: #fff;
    border-top: 1px solid rgba(255,255,255,0.18);
    padding: 0.5rem 0;
    font-size: var(--fs-sm);
}

.hero__topic-link:first-of-type {
    border-top: 0;
}

.hero__topic-link:hover {
    color: #fff;
    text-decoration: underline;
}

.hero__badge {
    display: inline-block;
    background: rgba(0,0,0,0.4);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    padding: 0.6rem 1.75rem;
    border-radius: var(--radius-xl);
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.25);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.hero__title-block {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: clamp(0.85rem, 2.5vw, 1.5rem);
    margin: 0 auto 1.5rem;
    flex-wrap: wrap;
    max-width: 100%;
}

.hero__title-logo {
    width: clamp(3rem, 8vw, 4.5rem);
    height: auto;
    aspect-ratio: 1;
    object-fit: contain;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.45));
}

.hero__title-text {
    flex: 1 1 min(100%, 18rem);
    text-align: left;
    min-width: 0;
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: var(--fw-bold);
    line-height: 1.1;
    margin-bottom: 0.35rem;
    letter-spacing: -0.02em;
    text-shadow:
        -1px -1px 0 rgba(0,0,0,0.8),
         1px -1px 0 rgba(0,0,0,0.8),
        -1px  1px 0 rgba(0,0,0,0.8),
         1px  1px 0 rgba(0,0,0,0.8),
         0 2px 20px rgba(0,0,0,0.5);
}

.hero__title-slogan {
    margin: 0;
    font-size: clamp(0.85rem, 2vw, 1rem);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.14em;
    text-transform: lowercase;
    color: rgba(255, 255, 255, 0.92);
    text-shadow:
        -1px -1px 0 rgba(0, 0, 0, 0.65),
         1px -1px 0 rgba(0, 0, 0, 0.65),
        -1px  1px 0 rgba(0, 0, 0, 0.65),
         1px  1px 0 rgba(0, 0, 0, 0.65),
         0 2px 12px rgba(0, 0, 0, 0.35);
}

@media (max-width: 540px) {
    .hero__title-block {
        flex-direction: column;
        align-items: center;
    }

    .hero__title-text {
        text-align: center;
        flex: 0 1 auto;
    }
}

.hero__title span {
    display: block;
    font-weight: var(--fw-medium);
    opacity: 0.9;
    font-size: 0.55em;
    letter-spacing: 0.02em;
    margin-top: 0.4rem;
}

.hero__subtitle {
    font-size: var(--fs-xl);
    opacity: 0.95;
    max-width: 640px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
    text-shadow:
        -1px -1px 0 rgba(0,0,0,0.6),
         1px -1px 0 rgba(0,0,0,0.6),
        -1px  1px 0 rgba(0,0,0,0.6),
         1px  1px 0 rgba(0,0,0,0.6),
         0 2px 10px rgba(0,0,0,0.4);
}

.hero__actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.hero__phone {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--fs-md);
    opacity: 0.85;
}

.hero__phone a {
    color: #fff;
    font-weight: var(--fw-semibold);
    text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}

.hero__phone a:hover {
    opacity: 0.8;
    color: #fff;
}

.hero__phone svg {
    flex-shrink: 0;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
    padding: 6rem 0;
    background: var(--clr-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.service-card {
    padding: 2.5rem 2rem;
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--clr-primary-bg);
}

.service-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--clr-primary-bg);
    color: var(--clr-primary);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.service-card__title {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    margin-bottom: 0.75rem;
}

.service-card__desc {
    font-size: var(--fs-base);
    color: var(--clr-text-light);
    line-height: 1.7;
}

.service-card__link {
    display: inline-block;
    margin-top: 1.25rem;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--clr-primary);
    transition: all var(--transition);
}

.service-card:hover .service-card__link {
    color: var(--clr-primary-dark);
    transform: translateX(4px);
}

a.service-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.services__notice {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1.75rem;
    background: #fff8e6;
    border: 1px solid #f0d87e;
    border-radius: var(--radius-md);
    color: #6b5a00;
    margin-bottom: 2.5rem;
}

.services__notice svg {
    flex-shrink: 0;
    margin-top: 0.15rem;
    color: var(--clr-warning);
}

.services__notice p {
    font-size: var(--fs-sm);
    line-height: 1.6;
}

/* ============================================
   SERVICE DETAIL SECTIONS
   ============================================ */
.service-detail {
    padding: 5rem 0;
    background: var(--clr-bg);
}

.service-detail--alt {
    background: var(--clr-bg-alt);
}

.service-detail__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.service-detail--reverse .service-detail__grid {
    direction: rtl;
}

.service-detail--reverse .service-detail__grid > * {
    direction: ltr;
}

.service-detail--full .service-detail__grid {
    grid-template-columns: 1fr;
    max-width: 780px;
}

.service-detail__content {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.service-detail__content .section-header__tag {
    margin-bottom: 0.5rem;
}

.service-detail__content .section-header__title {
    margin-bottom: 1.5rem;
}

.service-detail__content p {
    font-size: var(--fs-base);
    color: var(--clr-text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.service-detail__content p a {
    color: var(--clr-primary);
    font-weight: var(--fw-medium);
    text-decoration: underline;
}

.service-detail__cta {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--clr-border);
}

.service-detail__cta p {
    margin-bottom: 1rem;
    color: var(--clr-text);
    font-size: var(--fs-md);
}

.service-detail__image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.service-detail__image img {
    width: 100%;
    height: 100%;
    min-height: 400px;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.service-detail__image:hover img {
    transform: scale(1.03);
}

.service-detail__image::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(14,124,107,0.08) 100%);
    pointer-events: none;
}

/* ============================================
   PARTNER
   ============================================ */
.partner {
    padding: 6rem 0;
    background: var(--clr-bg-alt);
}

.partner__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.partner-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    min-height: 100px;
}

.partner-card:hover {
    border-color: var(--clr-primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}

.partner__grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.partner-card__img {
    max-width: 180px;
    max-height: 70px;
    object-fit: contain;
    transition: transform var(--transition);
}

.partner-card:hover .partner-card__img {
    transform: scale(1.05);
}

.partner-card__logo {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--clr-text-light);
    letter-spacing: 0.02em;
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    padding: 6rem 0;
    background: var(--clr-bg);
}

.about__profile {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3.5rem;
    align-items: start;
    margin-bottom: 4rem;
}

.about__portrait {
    position: sticky;
    top: calc(var(--nav-height) + 2rem);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about__portrait img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.about__name {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    margin-bottom: 0.25rem;
}

.about__role {
    font-size: var(--fs-md);
    font-weight: var(--fw-medium);
    color: var(--clr-primary);
    margin-bottom: 2rem;
}

.about__timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-bottom: 2.5rem;
    border-left: 3px solid var(--clr-primary-bg);
    padding-left: 1.5rem;
}

.timeline-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 0.6rem 0;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1.5rem - 5.5px);
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--clr-primary);
    border-radius: 50%;
    border: 2px solid var(--clr-bg);
    box-shadow: 0 0 0 2px var(--clr-primary);
}

.timeline-item__year {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--clr-primary);
    min-width: 44px;
    flex-shrink: 0;
}

.timeline-item__text {
    font-size: var(--fs-base);
    color: var(--clr-text);
    font-weight: var(--fw-medium);
}

.about__werdegang h4 {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    margin-bottom: 1rem;
}

.about__werdegang p {
    font-size: var(--fs-base);
    color: var(--clr-text-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about__werdegang p:last-child {
    margin-bottom: 0;
}

.about__contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.info-card {
    padding: 1.75rem;
    background: var(--clr-bg-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--clr-border);
}

.info-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--clr-primary-bg);
    color: var(--clr-primary);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.info-card h4 {
    font-size: var(--fs-base);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    margin-bottom: 0.5rem;
}

.info-card p {
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
    line-height: 1.7;
}

.info-card a {
    color: var(--clr-primary);
    word-break: break-word;
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact {
    padding: 6rem 0;
    background: var(--clr-bg-alt);
}

.contact-form {
    max-width: 900px;
    margin: 0 auto;
    background: var(--clr-bg);
    padding: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-sm);
}

.contact-form__row {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form__row--2 {
    grid-template-columns: 1fr 1fr;
}

.contact-form__row--3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group--full {
    margin-bottom: 1.5rem;
}

.form-group label {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--clr-text);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    font-family: var(--ff-base);
    font-size: var(--fs-base);
    color: var(--clr-text);
    background: var(--clr-bg);
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px var(--clr-primary-bg);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--clr-error);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%237b8fa3'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* Checkbox */
.form-group--checkbox {
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex !important;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
    line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
    flex-shrink: 0;
    margin-top: 0.25rem;
    accent-color: var(--clr-primary);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label a {
    color: var(--clr-primary);
    text-decoration: underline;
}

.checkbox-label__stack {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.checkbox-label__lead {
    font-weight: var(--fw-medium);
    color: var(--clr-text);
}

.calc-box .calc-checkbox-hint {
    display: block;
    font-size: var(--fs-xs);
    font-weight: var(--fw-regular);
    color: var(--clr-text-muted);
    line-height: 1.45;
}

.contact-form__required-note {
    font-size: var(--fs-xs);
    color: var(--clr-text-muted);
    margin-bottom: 1.5rem;
}

.contact-form__submit {
    text-align: center;
}

.contact-form__submit .btn {
    min-width: 220px;
}

.btn__loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    z-index: 2200;
    background: rgba(11, 27, 22, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(8px);
}

.cookie-banner__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.1rem;
}

.cookie-banner__text {
    margin: 0;
    color: #fff;
    font-size: var(--fs-sm);
    line-height: 1.55;
}

.cookie-banner__text a {
    color: #fff;
    text-decoration: underline;
}

.cookie-banner__actions {
    display: flex;
    gap: 0.65rem;
    flex-shrink: 0;
}

.cookie-btn {
    min-height: 44px;
    white-space: nowrap;
}

@media (max-width: 900px) {
    .cookie-banner__inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .cookie-banner__actions {
        width: 100%;
    }

    .cookie-banner__actions .cookie-btn {
        flex: 1;
        justify-content: center;
    }
}

.contact-form__message {
    margin-top: 1.5rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    text-align: center;
    font-weight: var(--fw-medium);
}

.contact-form__message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.contact-form__message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: #fff;
    color: var(--clr-text-light);
    padding: 4rem 0 0;
    border-top: 1px solid var(--clr-border);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--clr-border);
}

.footer__logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    filter: none;
}

.footer__brand h3 {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    margin-bottom: 0.25rem;
}

.footer__brand > p {
    font-size: var(--fs-base);
    color: var(--clr-text-light);
    margin-bottom: 0.75rem;
}

.footer__tagline {
    font-size: var(--fs-sm);
    color: var(--clr-text-muted);
    line-height: 1.6;
}

.footer h4 {
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.footer__contact p,
.footer__hours p {
    font-size: var(--fs-sm);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer__contact a {
    color: var(--clr-text);
    transition: color var(--transition);
    word-break: break-word;
}

.footer__contact a:hover {
    color: var(--clr-primary);
}

.footer__links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__links a {
    color: var(--clr-text-light);
    font-size: var(--fs-sm);
    transition: color var(--transition);
}

.footer__links a:hover {
    color: var(--clr-primary);
}

.footer__bottom {
    padding: 1.5rem 0;
    text-align: center;
    font-size: var(--fs-xs);
    color: var(--clr-text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .hero__content {
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
    :root {
        --fs-4xl: 2.75rem;
        --fs-3xl: 2rem;
    }

    .services__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }

    .partner__grid,
    .partner__grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .about__profile {
        grid-template-columns: 240px 1fr;
        gap: 2.5rem;
    }

    .about__contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.25rem;
    }

    .service-detail__grid {
        gap: 3rem;
    }

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

/* Tablet Portrait */
@media (max-width: 768px) {
    .hero__content {
        grid-template-columns: 1fr;
        gap: 1.25rem;
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }

    .hero__topics {
        order: 2;
    }

    .hero__main {
        order: 1;
    }
    :root {
        --nav-height: 70px;
        --fs-4xl: 2.25rem;
        --fs-3xl: 1.75rem;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--clr-bg);
        flex-direction: column;
        align-items: flex-start;
        padding: 6rem 2rem 2rem;
        gap: 0.25rem;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition);
        z-index: 1000;
    }

    .nav__menu.open {
        right: 0;
    }

    .nav__link {
        font-size: var(--fs-base);
        padding: 0.75rem 1rem;
        width: 100%;
    }

    .nav__link--cta {
        margin-left: 0;
        margin-top: 0.5rem;
        text-align: center;
    }

    .about__profile {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about__portrait {
        position: static;
        max-width: 260px;
        margin: 0 auto;
    }

    .about__bio {
        text-align: left;
    }

    .about__name {
        text-align: center;
    }

    .about__role {
        text-align: center;
    }

    .about__contact-grid {
        grid-template-columns: 1fr;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .service-detail__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-detail--reverse .service-detail__grid {
        direction: ltr;
    }

    .service-detail__image img {
        min-height: 280px;
    }

    .service-detail {
        padding: 3.5rem 0;
    }

    .partner__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partner__grid--3 {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .contact-form__row--2,
    .contact-form__row--3 {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .hero__actions .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* Mobile Small */
@media (max-width: 480px) {
    :root {
        --fs-4xl: 1.875rem;
        --fs-3xl: 1.5rem;
    }

    .hero__content {
        padding: 7rem 1rem 3rem;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .services,
    .partner,
    .about,
    .contact {
        padding: 4rem 0;
    }

    .service-card {
        padding: 2rem 1.5rem;
    }

    .partner__grid--3 {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 1.5rem 1rem;
    }
}

/* --- Mobile menu overlay --- */
.nav__overlay {
    display: none;
    position: fixed;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(0,0,0,0.4);
    z-index: 999;
}

.nav__overlay.active {
    display: block;
}

/* ============================================
   LANDING LINKS + SUBPAGES
   ============================================ */
.landing-links {
    padding: 5rem 0;
    background: var(--clr-bg);
}

.landing-links__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.landing-link-card {
    display: block;
    padding: 1.1rem 1.2rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    background: var(--clr-bg-alt);
    color: var(--clr-text);
    font-weight: var(--fw-semibold);
    transition: all var(--transition);
    text-align: center;
}

.landing-link-card:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary-dark);
    transform: translateY(-2px);
}

.topic {
    padding: 5rem 0;
    background: var(--clr-bg);
}

.topic--alt {
    background: var(--clr-bg-alt);
}

.topic__content {
    max-width: 900px;
    margin: 0 auto;
}

.topic__content p,
.topic__content li {
    color: var(--clr-text-light);
}

.topic__content ul {
    list-style: disc;
    padding-left: 1.2rem;
    margin: 1rem 0 0;
}

#hero .section-header,
#hero .topic__content {
    text-align: center;
}

#hero .section-header__title {
    display: block;
}

#hero .topic__content .home-cta__actions {
    justify-content: center;
}

.wartung-content {
    margin-top: 1.2rem;
}

.wartung-highlight {
    border-left: 4px solid var(--clr-primary);
    background: linear-gradient(90deg, rgba(36, 104, 78, 0.09) 0%, rgba(36, 104, 78, 0.03) 100%);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1rem;
    margin-bottom: 1rem;
}

.wartung-highlight p {
    margin: 0;
    color: var(--clr-text);
}

.wartung-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.9rem;
}

.wartung-card {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    background: #fff;
    padding: 1rem 1.1rem;
    box-shadow: 0 8px 18px rgba(12, 38, 28, 0.06);
}

.wartung-card h3 {
    margin-bottom: 0.45rem;
    color: var(--clr-text);
    font-size: var(--fs-lg);
}

.wartung-card p {
    margin: 0;
    line-height: 1.7;
}

.calc-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
}

.calc-box h3 {
    margin-bottom: 0.8rem;
}

.calc-box__hint {
    margin-bottom: 0.9rem;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.calc-section-title {
    grid-column: 1 / -1;
    font-weight: var(--fw-semibold);
    color: var(--clr-heading);
    margin-top: 0.5rem;
    padding-top: 0.4rem;
    border-top: 1px solid var(--clr-border);
}

.calc-full {
    grid-column: 1 / -1;
}



#calc-pv button[type="submit"] {
    grid-column: 1 / -1;
}

.calc-box label {
    display: block;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    margin-bottom: 0.35rem;
}

.calc-box input,
.calc-box select {
    width: 100%;
    padding: 0.65rem 0.8rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-sm);
    font: inherit;
}

.address-field {
    position: relative;
}

.address-suggestions {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: #fff;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 20;
    max-height: 220px;
    overflow-y: auto;
}

.address-suggestion-item {
    padding: 0.65rem 0.8rem;
    font-size: var(--fs-sm);
    color: var(--clr-text);
    border-bottom: 1px solid #eef2f6;
    cursor: pointer;
    line-height: 1.4;
}

.address-suggestion-item:last-child {
    border-bottom: 0;
}

.address-suggestion-item:hover {
    background: var(--clr-primary-bg);
    color: var(--clr-primary-dark);
}

.calc-result {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    background: var(--clr-primary-bg);
    color: var(--clr-text);
    border: 1px solid #cfeae2;
}

.isfp-price-breakdown {
    font-size: var(--fs-sm);
    line-height: 1.45;
}

.isfp-price-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    margin: 0.4rem 0;
    flex-wrap: wrap;
}

.isfp-price-row strong {
    font-weight: var(--fw-semibold);
    white-space: nowrap;
}

.isfp-price-hr {
    border: 0;
    border-top: 1px solid var(--clr-border);
    margin: 0.75rem 0;
}

.pv-result__title {
    margin: 0 0 0.8rem;
    font-size: var(--fs-lg);
    color: var(--clr-primary-dark);
}

.pv-result__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
}

.pv-result__item {
    background: #fff;
    border: 1px solid var(--clr-border);
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
}

.pv-result__item span {
    display: block;
    font-size: var(--fs-xs);
    color: var(--clr-text-light);
    margin-bottom: 0.2rem;
}

.pv-result__item strong {
    font-size: var(--fs-base);
    color: var(--clr-primary-dark);
}

.pv-result__hint {
    margin: 0.8rem 0 0;
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
}

.pv-result__actions {
    margin-top: 0.8rem;
}

.zins-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 1rem;
    align-items: start;
}

.zins-inputs,
.zins-output,
.zins-visual {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-sm);
    background: #fff;
    padding: 1rem;
}

.zins-inputs {
    display: grid;
    gap: 0.8rem;
}

.zins-output h4,
.zins-visual h4 {
    margin-bottom: 0.75rem;
}

.zins-field {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--clr-border);
    padding: 0.55rem 0;
}

.zins-field:last-child {
    border-bottom: 0;
}

.zins-field span {
    color: var(--clr-text-light);
    font-size: var(--fs-sm);
}

.zins-field strong {
    color: var(--clr-primary-dark);
}

.zins-bars {
    display: grid;
    gap: 0.45rem;
}

.zins-bars div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    padding: 0.5rem 0.65rem;
}

.zins-donut {
    margin-top: 0.9rem;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: conic-gradient(#f0c24f 0 50%, #f4e2b0 50% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.zins-donut__inner {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.65rem;
    font-size: var(--fs-sm);
    color: var(--clr-primary-dark);
}

.zins-visual__hint {
    margin-top: 0.7rem;
    color: var(--clr-text-light);
    font-size: var(--fs-sm);
}

#zins-year-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    outline: none;
    margin: 10px 0;
}

#zins-year-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #cbd5e1;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#zins-year-slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #cbd5e1;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.kfw-embed {
    width: 100%;
    min-height: 540px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fff;
}

.kfw-embed iframe {
    width: 100%;
    min-height: 540px;
    border: 0;
    display: block;
}

.kfw-open-btn {
    margin-top: 1rem;
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.visual-card {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: var(--clr-bg-alt);
}

.visual-card h4 {
    margin-bottom: 0.35rem;
}

.visual-card p {
    margin: 0;
    font-size: var(--fs-sm);
}

.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.compare-card {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: #fff;
}

.compare-card--highlight {
    border-color: var(--clr-primary);
    background: var(--clr-primary-bg);
}

.compare-card h4 {
    margin-bottom: 0.5rem;
}

.compare-list {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

.compare-list li {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.35rem 0;
    border-top: 1px dashed var(--clr-border);
}

.compare-list li:first-child {
    border-top: 0;
}

.process-flow {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.8rem;
}

.process-step {
    background: var(--clr-bg-alt);
    border: 1px solid var(--clr-border);
    border-radius: 999px;
    padding: 0.45rem 0.8rem;
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
}

.highlight-note {
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid #d5ebe6;
    border-left: 4px solid var(--clr-primary);
    border-radius: var(--radius-sm);
    background: #f5fbf9;
}

.topic-image-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1rem 0 1.4rem;
}

.topic-image-strip img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.accent-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.accent-card {
    border-radius: var(--radius-md);
    padding: 1rem;
    color: #fff;
    background: linear-gradient(135deg, #0e7c6b, #1a73e8);
    box-shadow: var(--shadow-sm);
}

.accent-card h4 {
    margin-bottom: 0.35rem;
    color: #fff;
}

.accent-card ul {
    list-style: disc;
    padding-left: 1.2rem;
    margin: 0;
}

.accent-card li {
    color: rgba(255, 255, 255, 0.95);
    font-size: var(--fs-sm);
    line-height: 1.6;
}

.accent-card a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.accent-card a:hover {
    color: rgba(255, 255, 255, 0.85);
}

.accent-card p {
    margin: 0;
    color: rgba(255,255,255,0.92);
    font-size: var(--fs-sm);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.feature-box {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: #fff;
}

.feature-box h4 {
    margin-bottom: 0.4rem;
}

.step-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.step-box {
    border: 1px solid #d7e8e3;
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    background: #f7fcfa;
    font-size: var(--fs-sm);
}

.step-box strong {
    display: block;
    color: var(--clr-primary-dark);
    margin-bottom: 0.25rem;
}

@media (max-width: 768px) {
    .landing-links__grid {
        grid-template-columns: 1fr;
    }

    .calc-grid {
        grid-template-columns: 1fr;
    }

    .pv-result__grid {
        grid-template-columns: 1fr;
    }

    #calc-pv .pv-battery-toggle,
    #calc-pv .pv-battery-select {
        justify-content: flex-start;
    }

    .zins-grid {
        grid-template-columns: 1fr;
    }

    .zins-donut {
        width: 190px;
        height: 190px;
    }

    .zins-donut__inner {
        width: 130px;
        height: 130px;
    }

    .visual-grid,
    .compare-grid,
    .accent-cards,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .topic-image-strip {
        grid-template-columns: 1fr;
    }

    .step-grid {
        grid-template-columns: 1fr 1fr;
    }

    .wp-konf__options {
        grid-template-columns: 1fr;
    }

    .wp-konf__result-pricing {
        grid-template-columns: 1fr;
    }

    .home-cta__actions {
        flex-direction: column;
    }
}

/* --- Homepage content sections (Startseite) --- */
.home-section {
    padding: 4rem 0;
}

.home-section--alt {
    background: var(--clr-bg-alt);
}

.home-section__lead {
    max-width: 720px;
    margin: 0 auto 2rem;
    text-align: center;
    color: var(--clr-text-light);
}

.home-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-top: 2rem;
}

.home-benefit {
    padding: 1.5rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    background: #fff;
}

.home-benefit h3 {
    font-size: var(--fs-lg);
    margin-bottom: 0.5rem;
    color: var(--clr-primary-dark);
}

.home-benefit p {
    margin: 0;
    color: var(--clr-text-light);
    font-size: var(--fs-sm);
}

.home-benefit a {
    display: inline-block;
    margin-top: 0.75rem;
    font-weight: var(--fw-semibold);
    font-size: var(--fs-sm);
}

.home-checklist {
    list-style: none;
    max-width: 640px;
    margin: 1.5rem auto 2rem;
}

.home-checklist li {
    padding: 0.5rem 0 0.5rem 1.75rem;
    position: relative;
}

.home-checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--clr-primary);
    font-weight: var(--fw-bold);
}

.home-cta {
    text-align: center;
    padding: 3rem 0 4rem;
}

.home-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.home-audience {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.home-audience__card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--clr-border);
    background: #fff;
}

.home-audience__card h3 {
    font-size: var(--fs-md);
    margin-bottom: 0.35rem;
}

@media (max-width: 768px) {
    .home-benefits,
    .home-audience {
        grid-template-columns: 1fr;
    }
}

/* --- Wärmepumpe Online-Konfigurator --- */
.wp-konf {
    margin-top: 1.5rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    background: #fff;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.wp-konf__intro {
    padding: 1.5rem 1.5rem 0;
    text-align: center;
}

.wp-konf__intro-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1.25rem;
    margin: 1rem 0 0;
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
}

.wp-konf__intro-list li::before {
    content: '•';
    color: var(--clr-primary);
    margin-right: 0.35rem;
}

.wp-konf__trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    padding: 1rem 1.5rem;
    font-size: var(--fs-sm);
    color: var(--clr-text-muted);
    border-bottom: 1px solid var(--clr-border);
}

.wp-konf__progress {
    height: 6px;
    background: #e8eef3;
}

.wp-konf__progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-primary-light));
    transition: width 0.35s ease;
}

.wp-konf__viewport {
    overflow: hidden;
    min-height: 280px;
}

.wp-konf__track {
    position: relative;
}

.wp-konf__step {
    display: none;
    padding: 2rem 1.5rem 1.5rem;
    box-sizing: border-box;
    animation: wpKonfFadeIn 0.35s ease;
}

.wp-konf__step.is-active {
    display: block;
}

.wp-konf__step.is-hidden {
    display: none !important;
}

@keyframes wpKonfFadeIn {
    from { opacity: 0; transform: translateX(12px); }
    to { opacity: 1; transform: translateX(0); }
}

.wp-konf__title {
    text-align: center;
    font-size: var(--fs-xl);
    font-weight: var(--fw-semibold);
    margin-bottom: 0.5rem;
    color: var(--clr-text);
}

.wp-konf__subtitle {
    text-align: center;
    font-size: var(--fs-sm);
    color: var(--clr-text-muted);
    margin-bottom: 1.5rem;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.wp-konf__title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.wp-konf__info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    border: 1px solid var(--clr-border);
    background: var(--clr-bg-alt);
    color: var(--clr-primary);
    cursor: pointer;
    font-size: var(--fs-sm);
    font-weight: var(--fw-bold);
    padding: 0;
    line-height: 1;
}

.wp-konf__info-btn:hover {
    background: var(--clr-primary-bg);
    border-color: var(--clr-primary);
}

.wp-konf__options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    max-width: 720px;
    margin: 0 auto;
}

.wp-konf__options--2 {
    max-width: 520px;
}

.wp-konf__options--3 {
    max-width: 900px;
}

.wp-konf__options--land {
    max-width: 920px;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.wp-konf__option-icon--wappen {
    width: 64px;
    height: 64px;
}

.wp-konf .btn--outline,
.wp-konf .btn--outline:hover {
    color: var(--clr-primary-dark);
    border-color: var(--clr-primary);
    background: #fff;
}

.wp-konf .btn--outline:hover {
    background: var(--clr-primary-bg);
    border-color: var(--clr-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.wp-konf__option {
    position: relative;
    cursor: pointer;
}

.wp-konf__option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.wp-konf__option-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid var(--clr-border);
    border-radius: var(--radius-md);
    text-align: center;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
    background: #fff;
    height: 100%;
}

.wp-konf__option input:checked + .wp-konf__option-card {
    border-color: var(--clr-primary);
    background: var(--clr-primary-bg);
    box-shadow: 0 0 0 1px var(--clr-primary);
}

.wp-konf__option-card:hover {
    border-color: var(--clr-primary-light);
}

.wp-konf__option-icon {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 0.65rem;
}

.wp-konf__option-label {
    font-weight: var(--fw-medium);
    font-size: var(--fs-sm);
    line-height: 1.35;
}

.wp-konf__nav {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem 1.5rem;
    border-top: 1px solid var(--clr-border);
    background: var(--clr-bg-alt);
}

.wp-konf__nav[hidden],
#wp-konf-range-next[hidden] {
    display: none !important;
}

.wp-konf__nav .btn--primary#wp-konf-range-next {
    margin-left: auto;
}

.wp-konf__nav--range-only .btn--primary {
    margin-left: auto;
}

.wp-konf__badge {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.2rem 0.5rem;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-sm);
    background: #fde8e8;
    color: #b42318;
}

.wp-konf__range-wrap {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
}

.wp-konf__range-value {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--clr-primary-dark);
    margin-bottom: 0.75rem;
}

.wp-konf__range {
    width: 100%;
    accent-color: var(--clr-primary);
}

.wp-konf__range-suffix {
    font-size: var(--fs-sm);
    color: var(--clr-text-muted);
    margin-top: 0.25rem;
}

.wp-konf__unknown {
    margin-top: 1rem;
    text-align: center;
}

.wp-konf__nav .btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.wp-konf__result {
    padding: 2.5rem 1.5rem 2rem;
    text-align: center;
    border-top: 1px solid var(--clr-border);
    background: #fff;
}

.wp-konf__result.is-hidden {
    display: none;
}

.wp-konf__result-hero {
    margin-bottom: 2rem;
}

.wp-konf__result-eyebrow {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--clr-text-muted);
    margin-bottom: 0.5rem;
}

.wp-konf__result-kw {
    font-size: clamp(2.75rem, 8vw, 4rem);
    font-weight: var(--fw-bold);
    color: var(--clr-primary-dark);
    line-height: 1.05;
    margin: 0.25rem 0 0.75rem;
}

.wp-konf__result-desc {
    max-width: 560px;
    margin: 0 auto;
    color: var(--clr-text-light);
    font-size: var(--fs-md);
    line-height: 1.55;
}

.wp-konf__result-pricing {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 820px;
    margin: 0 auto 1.25rem;
    align-items: stretch;
}

.wp-konf__price-box {
    padding: 1.25rem 1rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    background: var(--clr-bg-alt);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.wp-konf__price-box small {
    font-size: var(--fs-xs);
    color: var(--clr-text-muted);
    line-height: 1.35;
}

.wp-konf__price-label {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.wp-konf__price-value {
    font-size: var(--fs-xl);
    font-weight: var(--fw-bold);
    color: var(--clr-text);
    line-height: 1.2;
}

.wp-konf__price-box--foerder {
    background: #f0faf7;
    border-color: #b8e6d9;
}

.wp-konf__price-box--foerder .wp-konf__price-value {
    color: var(--clr-primary);
}

.wp-konf__price-box--eigen {
    background: linear-gradient(180deg, var(--clr-primary-bg) 0%, #fff 100%);
    border-color: var(--clr-primary);
    box-shadow: var(--shadow-md);
}

.wp-konf__price-box--eigen .wp-konf__price-value {
    font-size: var(--fs-2xl);
    color: var(--clr-primary-dark);
}

.wp-konf__result-note {
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--clr-primary);
    margin-bottom: 1.5rem;
}

.wp-konf__result-details {
    max-width: 640px;
    margin: 0 auto 1rem;
    text-align: left;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    background: var(--clr-bg-alt);
}

.wp-konf__result-details summary {
    padding: 0.85rem 1rem;
    cursor: pointer;
    font-weight: var(--fw-semibold);
    color: var(--clr-primary-dark);
    list-style: none;
}

.wp-konf__result-details summary::-webkit-details-marker {
    display: none;
}

.wp-konf__result-details summary::after {
    content: '+';
    float: right;
    font-weight: var(--fw-bold);
}

.wp-konf__result-details[open] summary::after {
    content: '−';
}

.wp-konf__result-disclaimer {
    max-width: 640px;
    margin: 0 auto 1.25rem;
    text-align: center;
}

.wp-konf__result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.wp-konf__result-summary {
    padding: 0 1rem 1rem;
    font-size: var(--fs-sm);
    line-height: 1.6;
    border-top: 1px solid var(--clr-border);
    margin-top: 0;
}

.wp-konf__result-summary dt {
    font-weight: var(--fw-semibold);
    color: var(--clr-text);
    margin-top: 0.5rem;
}

.wp-konf__result-summary dt:first-child {
    margin-top: 0;
}

.wp-konf__result-summary dd {
    margin: 0.15rem 0 0;
    color: var(--clr-text-light);
}

.wp-konf-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.wp-konf-modal[hidden] {
    display: none;
}

.wp-konf-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 28, 46, 0.55);
}

.wp-konf-modal__dialog {
    position: relative;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
}

.wp-konf-modal__close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    border: 0;
    background: transparent;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: var(--clr-text-muted);
}

.wp-konf-modal__title {
    font-size: var(--fs-lg);
    margin-bottom: 0.75rem;
    padding-right: 2rem;
}

.wp-konf-modal__body {
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
    line-height: 1.65;
}

.wp-konf-modal__body p {
    margin-bottom: 0.75rem;
}

.wp-konf-start {
    position: fixed;
    inset: 0;
    z-index: 1999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.wp-konf-start[hidden] {
    display: none;
}

.wp-konf-start__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 28, 46, 0.6);
}

.wp-konf-start__dialog {
    position: relative;
    max-width: 440px;
    width: 100%;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.wp-konf-start__dialog h2 {
    font-size: var(--fs-xl);
    margin-bottom: 1rem;
}

.wp-konf-start__dialog ul {
    list-style: none;
    text-align: left;
    margin: 0 0 1.5rem;
    font-size: var(--fs-sm);
    color: var(--clr-text-light);
}

.wp-konf-start__dialog li {
    padding: 0.35rem 0 0.35rem 1.5rem;
    position: relative;
}

.wp-konf-start__dialog li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--clr-primary);
    font-weight: var(--fw-bold);
}