/* ===== DESIGN-SYSTEM & VARIABLES ===== */
:root {
  --primary: #f97316;
  --secondary: #0d9488;
  --accent: #eab308;
  --background: #fffbeb;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #78716c;
  
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Work Sans', sans-serif;

  --container-width: 1140px;
  --border-radius: 8px;
  --transition-speed: 0.3s;
}

/* ===== GLOBAL STYLES ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* Offset for sticky header */
}

body {
  font-family: var(--font-body);
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

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

a:hover {
  color: var(--secondary);
}

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

ul {
  list-style: none;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.container-small {
  max-width: 800px;
}

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

.section-padding {
  padding: 80px 0;
}

.section-accent {
  background-color: var(--surface);
}
.section-light {
    background-color: color-mix(in srgb, var(--background) 95%, var(--accent));
}

.section-title {
  margin-bottom: 2rem;
}

.section-intro {
  max-width: 700px;
  margin: 0 auto 3rem auto;
  font-size: 1.1rem;
  color: var(--muted);
}

/* ===== HEADER ===== */
.header {
  background-color: rgba(255, 251, 235, 0.8);
  backdrop-filter: blur(10px);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid color-mix(in srgb, var(--background) 80%, var(--muted));
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}
.logo:hover { color: var(--text); }

.flame-icon, .flame-icon-btn {
  color: var(--primary);
}

.main-nav ul {
  display: flex;
  gap: 30px;
}

.main-nav a {
  color: var(--text);
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-speed) ease;
}

.main-nav a:hover::after {
  width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 100px 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
}

.badge {
  display: inline-block;
  background-color: color-mix(in srgb, var(--primary) 15%, transparent);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1rem;
}

.subheadline {
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--border-radius);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--surface);
}
.btn-primary:hover {
  background-color: #ea580c;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text);
  border-color: #d6d3d1;
}
.btn-secondary:hover {
  background-color: var(--surface);
  border-color: var(--text);
}

.hero-image-wrapper {
  margin-top: 4rem;
}

.hero-image {
  border-radius: var(--border-radius);
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15);
}

/* ===== TRUST BADGES ===== */
.trust-badges {
  padding-bottom: 80px;
}

.trust-badges-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.trust-badge {
  background-color: var(--surface);
  padding: 20px;
  border-radius: var(--border-radius);
  border: 1px solid #f5f5f4;
}

.trust-badge .trust-icon {
    font-size: 1.5rem;
}

.trust-badge h3 {
  font-size: 2rem;
  margin: 0.5rem 0;
}

.trust-badge p {
  color: var(--muted);
  font-size: 0.9rem;
}

/* ===== CARD GRID (WAS IST FIRE) ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 4rem;
}

.card {
  background-color: var(--surface);
  padding: 30px;
  border-radius: var(--border-radius);
  text-align: left;
  border: 1px solid #f5f5f4;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.card i {
  color: var(--secondary);
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.subsection-title {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-weight: 500;
}

.fire-variants {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.variant-tag {
  background-color: #f5f5f4;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== FIRE RECHNER ===== */
.rechner-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  background-color: var(--background);
  padding: 40px;
  border-radius: var(--border-radius);
  border: 1px solid #f5f5f4;
  margin-bottom: 2rem;
}

.rechner-outputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--muted);
}
.form-group input[type="number"], .form-group input[type="range"] {
  width: 100%;
  padding: 12px;
  border: 1px solid #d6d3d1;
  border-radius: var(--border-radius);
  font-size: 1.2rem;
  font-family: var(--font-heading);
}

.form-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: #d6d3d1;
    outline: none;
    padding: 0;
}

.form-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--primary);
  cursor: pointer;
  border-radius: 50%;
}

.output-box {
  background-color: var(--surface);
  padding: 20px;
  border-radius: var(--border-radius);
  border: 1px solid #f5f5f4;
}

.output-box p {
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.output-box h3 {
  font-size: 2.2rem;
  color: var(--secondary);
}
.output-box.output-box-highlight h3 {
  color: var(--primary);
  font-size: 2.5rem;
}

.rechner-info {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== STRATEGIEN TIMELINE ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::after {
  content: '';
  position: absolute;
  width: 3px;
  background-color: var(--secondary);
  opacity: 0.2;
  top: 0;
  bottom: 0;
  left: 30px;
  margin-left: -1.5px;
}
.timeline-item {
  padding: 10px 40px;
  padding-left: 70px;
  position: relative;
}
.timeline-dot {
  position: absolute;
  left: 30px;
  top: 25px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--surface);
  border: 4px solid var(--secondary);
  transform: translateX(-50%);
  z-index: 1;
}
.timeline-content {
  background-color: var(--surface);
  padding: 20px 30px;
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent);
}
.timeline-content h4 {
  margin-bottom: 1rem;
}
.timeline-content ul {
  list-style: disc;
  padding-left: 20px;
}
.timeline-content ul li {
  margin-bottom: 0.5rem;
  color: var(--muted);
}

/* ===== SPAR-TIPPS ===== */
.card-grid-small {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card-small {
    background: var(--surface);
    padding: 25px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid #f5f5f4;
}

.card-small i {
    color: var(--primary);
    width: 36px;
    height: 36px;
    margin-bottom: 1rem;
}
.card-small h5 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}
.card-small p {
    color: var(--muted);
    font-size: 0.9rem;
}

/* ===== FAQ ===== */
.faq-container {
  border: 1px solid #e7e5e4;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid #e7e5e4;
}
.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  background-color: var(--surface);
}
.faq-question:hover {
  background-color: #fafaf9;
}
.faq-question span {
  font-weight: 600;
  font-size: 1.1rem;
}
.faq-question i {
  transition: transform var(--transition-speed) ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-speed) ease-out, padding var(--transition-speed) ease-out;
  background-color: #fafaf9;
}
.faq-answer p {
  padding: 0 20px 20px 20px;
  color: var(--muted);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-item.active .faq-answer {
  max-height: 200px;
}

/* ===== KONTAKT ===== */
.contact-form {
  background-color: var(--surface);
  padding: 40px;
  border-radius: var(--border-radius);
}

.contact-form .form-group input,
.contact-form .form-group select,
.contact-form .form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #d6d3d1;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: var(--font-body);
}

.contact-form .form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.5rem;
}
.contact-form .form-group-checkbox input {
    width: auto;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--text);
  color: #a8a29e;
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  padding-bottom: 40px;
}
.footer .logo {
  color: var(--surface);
}
.footer .logo .flame-icon { color: var(--primary); }

.footer-col h4 {
  color: var(--surface);
  margin-bottom: 1rem;
  font-size: 1rem;
}
.footer-col ul li {
  margin-bottom: 0.5rem;
}
.footer-col a {
  color: #a8a29e;
}
.footer-col a:hover {
  color: var(--surface);
}
.footer-col .tagline {
    margin-top: 1rem;
    font-style: italic;
}
.footer-col .address {
    margin-top: 1rem;
    font-size: 0.9rem;
}

.newsletter-form {
  display: flex;
}
.newsletter-form input {
  flex-grow: 1;
  border: 1px solid #57534e;
  background: #292524;
  color: var(--surface);
  padding: 10px;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
}
.newsletter-form button {
  padding: 10px 15px;
  background-color: var(--primary);
  color: var(--surface);
  border: none;
  cursor: pointer;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  font-weight: 500;
}

.footer-bottom {
  border-top: 1px solid #292524;
  padding: 20px 0;
  font-size: 0.9rem;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 992px) {
  h1 { font-size: 2.8rem; }
  h2 { font-size: 2rem; }
  .rechner-wrapper { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { scroll-padding-top: 70px; }
  .header { padding: 10px 0; }
  .main-nav { display: none; } /* Simplified for demo, would need a burger menu */
  .hero { padding: 60px 0; }
  h1 { font-size: 2.2rem; }
  .hero-buttons { flex-direction: column; }
  .trust-badges-container { grid-template-columns: repeat(2, 1fr); }
  .timeline::after { left: 15px; }
  .timeline-item { padding-left: 45px; }
  .timeline-dot { left: 15px; }
}

@media (max-width: 576px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom .container { flex-direction: column; text-align: center; gap: 5px; }
}