/* SolarQuartier — Hauptstylesheet1 */

/* ===== CSS-Variablen ===== */
:root {
  --orange: #E8820A;
  --orange-dark: #C46E08;
  --gold: #F5A623;
  --cream: #FDF6EE;
  --light-gray: #EFEFEF;
  --border: #DCDCDC;
  --text: #1A1A1A;
  --text-light: #444444;
  --white: #FFFFFF;
  --footer-bg: #1A1A1A;
  --nav-height: 76px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}

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

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

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

/* ===== Typografie ===== */
h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

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

/* ===== Layout ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
  background: var(--white);
}

section.bg-alt {
  background: var(--light-gray);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.4;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  color: var(--white);
}

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

.btn-outline:hover {
  background: var(--orange);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--orange);
  border-color: var(--white);
}

.btn-white:hover {
  background: var(--cream);
  color: var(--orange-dark);
}

.btn-hero-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-hero-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  border-color: var(--white);
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--white);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

.nav.nav-transparent {
  background: transparent;
  box-shadow: none;
}

.nav.nav-transparent .nav-links a {
  color: rgba(255, 255, 255, 0.88);
}

.nav.nav-transparent .nav-links a:hover,
.nav.nav-transparent .nav-links a.active {
  color: var(--gold);
}

.nav.nav-transparent .nav-toggle span {
  background: var(--white);
}

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

.nav-logo img {
  height: 64px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--orange);
}

.nav-cta {
  margin-left: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition);
}

/* ===== Hero ===== */
.hero {
  padding-top: calc(var(--nav-height) + 5rem);
  padding-bottom: 5rem;
  background: linear-gradient(135deg, #1A1A1A 0%, #2C2C2C 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(232, 130, 10, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

/* Wasserzeichen im Hero */
.hero::after {
  content: '';
  position: absolute;
  top: var(--nav-height);
  right: 0;
  bottom: 0;
  width: 50%;
  background: url('../Logo-transparent.png') no-repeat center right/contain;
  opacity: 0.10;
  pointer-events: none;
}

.hero-content {
  max-width: 660px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero h1 span {
  color: var(--gold);
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero für Unterseiten */
.hero-sub {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 3rem;
  background: linear-gradient(135deg, #1A1A1A 0%, #2C2C2C 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero-sub::after {
  content: '';
  position: absolute;
  top: var(--nav-height);
  right: 0;
  bottom: 0;
  width: 40%;
  background: url('../Logo-transparent.png') no-repeat center right/contain;
  opacity: 0.10;
  pointer-events: none;
}

.hero-sub .container {
  position: relative;
  z-index: 1;
}

.hero-sub h1 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.hero-sub h1 span {
  color: var(--gold);
}

.hero-sub p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.05rem;
  margin: 0;
}

/* ===== Abschnitts-Header ===== */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
  color: var(--text);
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-light);
}

.section-label {
  display: inline-block;
  background: var(--cream);
  color: var(--orange);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(232, 130, 10, 0.2);
}

/* Section-Label auf dunklem Hintergrund */
.hero .section-label,
.hero-sub .section-label {
  background: rgba(232, 130, 10, 0.2);
  color: var(--gold);
  border-color: rgba(245, 166, 35, 0.3);
}

/* ===== Karten ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* ===== Zwei-Spalten-Layout ===== */
.two-col,
.two-col-wide {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.two-col {
  grid-template-columns: 1fr 1fr;
}

.two-col-wide {
  grid-template-columns: 2fr 1fr;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--cream);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  border: 1px solid rgba(232, 130, 10, 0.15);
}

.card h3 {
  margin-bottom: 0.5rem;
  color: var(--text);
}

.card p {
  color: var(--text-light);
}

/* Leistungs-Karte */
.service-card {
  display: block;
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  border: 2px solid var(--border);
  transition: all var(--transition);
  color: var(--text);
}

.service-card:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(232, 130, 10, 0.15);
  color: var(--text);
}

.service-card .service-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.service-card p {
  color: var(--text-light);
}

.service-card .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--orange);
  font-weight: 600;
  margin-top: 1.25rem;
}

/* ===== USP-Leiste ===== */
.usp-bar {
  background: var(--orange);
  padding: 2.5rem 0;
}

.usp-items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem 3rem;
}

.usp-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
}

.usp-item .check {
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  color: var(--white);
}

/* ===== Prozess-Schritte ===== */
.steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-num {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: var(--orange);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.step-content h3 {
  margin-bottom: 0.25rem;
  color: var(--text);
}

.step-content p {
  color: var(--text-light);
  margin: 0;
}

/* ===== Modell-Karten ===== */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.model-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.model-card:hover {
  border-color: var(--orange);
  box-shadow: 0 4px 16px rgba(230, 120, 0, 0.1);
}

.model-card.highlight {
  border-color: var(--orange);
}

.model-card.selected {
  border-color: var(--orange);
  background: #FFF8F2;
  box-shadow: 0 4px 20px rgba(230, 120, 0, 0.15);
}

.model-card.selected .step-num {
  background: #2E7D32;
}

.model-card.selected::after {
  content: '✓';
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 20px;
  text-align: center;
  color: var(--white);
  background: var(--orange);
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

.model-card h4 {
  color: var(--orange);
  font-size: 1rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.model-card p {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ===== Vergleichstabelle ===== */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.compare-table th {
  background: var(--orange);
  color: var(--white);
  padding: 1rem;
  text-align: left;
  font-weight: 700;
}

.compare-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-light);
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table tr:nth-child(even) td {
  background: #F9F9F9;
}

.compare-table td:first-child {
  color: var(--text);
  font-weight: 500;
}

.tag-yes {
  color: #2E7D32;
  font-weight: 700;
}

.tag-no {
  color: #B71C1C;
  font-weight: 700;
}

/* ===== Highlight-Box ===== */
.highlight-box {
  background: var(--cream);
  border-left: 4px solid var(--orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  color: var(--text-light);
}

.highlight-box strong {
  color: var(--orange);
}

/* ===== Kombiangebot-Banner ===== */
.combo-banner {
  background: linear-gradient(135deg, var(--orange) 0%, var(--gold) 100%);
  border-radius: var(--radius);
  padding: 2.5rem;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.combo-banner h3 {
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.combo-banner p {
  color: rgba(255, 255, 255, 0.92);
  margin: 0;
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--cream);
}

.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  background: var(--orange);
  border-radius: 50%;
  position: relative;
  transition: transform var(--transition);
  font-size: 0;
}

.faq-question .faq-icon::before,
.faq-question .faq-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--white);
  border-radius: 1px;
}

.faq-question .faq-icon::before {
  width: 12px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.faq-question .faq-icon::after {
  width: 2px;
  height: 12px;
  transform: translate(-50%, -50%);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--text-light);
  line-height: 1.7;
  border-top: 1px solid var(--border);
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-category {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin: 2.5rem 0 1rem;
}

.faq-category:first-child {
  margin-top: 0;
}

/* ===== Kontakt-Formular ===== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
}

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

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

.form-section-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  border-bottom: 2px solid var(--orange);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

.form-note {
  font-size: 0.825rem;
  color: var(--text-light);
  margin-top: 0.75rem;
}

/* ===== QR-Seite ===== */
.qr-hero {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 3rem;
  background: var(--orange);
  color: var(--white);
  text-align: center;
}

.qr-hero h1 {
  color: var(--white);
}

.qr-hero p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.1rem;
}

.stoerung-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  box-shadow: var(--shadow);
}

.stoerung-num {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  background: var(--orange);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.stoerung-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ===== CTA-Sektion ===== */
.cta-section {
  background: linear-gradient(135deg, #1A1A1A 0%, #2C2C2C 100%) !important;
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 40%;
  background: url('../Logo-transparent.png') no-repeat center left/contain;
  opacity: 0.07;
  pointer-events: none;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

/* ===== Footer ===== */
footer {
  background: var(--footer-bg);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 1.5rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-brand img {
  height: 56px;
  margin-bottom: 1.25rem;
  filter: brightness(0) invert(1);
  object-fit: contain;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-col ul a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--gold);
}

/* ===== Rechtliche Seiten ===== */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.legal-content h1 {
  color: var(--text);
}

.legal-content h2 {
  margin: 2rem 0 0.75rem;
  color: var(--text);
  font-size: 1.2rem;
}

.legal-content h3 {
  margin: 1.5rem 0 0.5rem;
  color: var(--text);
}

.legal-content p {
  color: var(--text-light);
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content li {
  margin-bottom: 0.3rem;
  color: var(--text-light);
}

.legal-content a {
  color: var(--orange);
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.legal-content table th {
  background: var(--light-gray);
  padding: 0.75rem;
  text-align: left;
  font-weight: 600;
  color: var(--text);
}

.legal-content table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ===== Scroll-Animationen ===== */
.scroll-animate {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.scroll-visible {
  opacity: 1;
  transform: none;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--white);
    padding: 1rem 1.5rem 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    gap: 1rem;
    border-top: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    color: var(--text);
    font-size: 1rem;
    padding: 0.25rem 0;
  }

  .nav.nav-transparent .nav-links a {
    color: var(--text);
  }

  .nav.nav-transparent .nav-links a:hover {
    color: var(--orange);
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .combo-banner {
    flex-direction: column;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

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

  .two-col,
  .two-col-wide {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero::after,
  .hero-sub::after {
    width: 35%;
    opacity: 0.07;
  }
}

@media (max-width: 480px) {
  section {
    padding: 3rem 0;
  }

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

  .usp-items {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .hero::after,
  .hero-sub::after {
    display: none;
  }
}