/* ============================
   WEISSMANN-BAU – Modern Design
   ============================ */

:root {
  --orange: #e85c00;
  --orange-light: #ff7a20;
  --dark: #111111;
  --dark-2: #1a1a1a;
  --dark-3: #222222;
  --mid: #444444;
  --light-bg: #f7f7f5;
  --white: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --border: #e5e5e5;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 4px;
  --transition: 0.25s ease;
  --max-w: 1160px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

/* ============================
   LAYOUT
   ============================ */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================
   NAVIGATION
   ============================ */

.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav-header.scrolled {
  background: rgba(17, 17, 17, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--white);
}

.logo span {
  color: var(--orange);
}

.nav-inner nav {
  display: flex;
  gap: 36px;
}

.nav-inner nav a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.nav-inner nav a:hover {
  color: var(--white);
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.08);
}

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

.nav-mobile-link {
  padding: 18px 24px;
  color: rgba(255,255,255,0.8);
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color var(--transition), background var(--transition);
}

.nav-mobile-link:hover {
  color: var(--white);
  background: rgba(255,255,255,0.04);
}

/* ============================
   HERO
   ============================ */

.hero {
  min-height: 100vh;
  background: var(--dark);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(232,92,0,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(232,92,0,0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,92,0,0.4), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 80px;
  padding-bottom: 100px;
}

.hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 28px;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.55);
  max-width: 520px;
  line-height: 1.6;
  margin-bottom: 44px;
  font-weight: 300;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-scroll span {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.3));
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============================
   BUTTONS
   ============================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--orange-light);
  border-color: var(--orange-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(232,92,0,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.06);
}

.btn-full {
  width: 100%;
}

/* ============================
   SECTION HEADERS
   ============================ */

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header--light .section-label,
.section-header--light h2 {
  color: var(--white);
}

.section-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
}

/* ============================
   LEISTUNGEN
   ============================ */

.leistungen {
  padding: 100px 0;
  background: var(--white);
}

.leistungen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.leistung-card {
  background: var(--white);
  padding: 48px 40px;
  transition: background var(--transition);
}

.leistung-card:hover {
  background: var(--light-bg);
}

.leistung-icon {
  width: 44px;
  height: 44px;
  color: var(--orange);
  margin-bottom: 28px;
}

.leistung-icon svg {
  width: 100%;
  height: 100%;
}

.leistung-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text);
}

.leistung-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================
   QUOTE BAND
   ============================ */

.quote-band {
  background: var(--orange);
  padding: 56px 0;
}

.quote-band blockquote {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--white);
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

/* ============================
   PROJEKTE
   ============================ */

.projekte {
  padding: 100px 0;
  background: var(--dark-2);
}

.projekte-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.projekt-card {
  border-radius: 4px;
  overflow: hidden;
  background: var(--dark-3);
  transition: transform var(--transition);
}

.projekt-card:hover {
  transform: translateY(-4px);
}

.projekt-img {
  aspect-ratio: 8/5;
  overflow: hidden;
  background: var(--dark-3);
}

.projekt-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  filter: brightness(0.9);
}

.projekt-card:hover .projekt-img img {
  transform: scale(1.04);
  filter: brightness(1);
}

.projekt-info {
  padding: 20px 24px;
}

.projekt-ort {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
}

.projekt-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-top: 4px;
}

/* ============================
   KONTAKT
   ============================ */

.kontakt {
  padding: 100px 0;
  background: var(--light-bg);
}

.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.kontakt-info h3 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.kontakt-info > p {
  color: var(--text-muted);
  margin-bottom: 36px;
}

.kontakt-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.kontakt-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.kontakt-row svg {
  width: 20px;
  height: 20px;
  color: var(--orange);
  flex-shrink: 0;
  margin-top: 2px;
}

.kontakt-row span {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.kontakt-row a {
  color: var(--text);
  font-weight: 500;
  transition: color var(--transition);
}

.kontakt-row a:hover {
  color: var(--orange);
}

/* Form */

.kontakt-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 14px 18px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: #aaaaaa;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(232,92,0,0.12);
}

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

/* ============================
   FOOTER
   ============================ */

.footer {
  background: var(--dark);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.logo--white {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
}

.logo--white span {
  color: var(--orange);
}

.footer-nav {
  display: flex;
  gap: 28px;
}

.footer-nav a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--white);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  width: 100%;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.07);
  padding-top: 24px;
  margin-top: 8px;
}

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

@media (max-width: 960px) {
  .leistungen-grid {
    grid-template-columns: 1fr;
  }
  .leistungen-grid {
    gap: 1px;
  }
  .projekte-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .kontakt-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 720px) {
  .nav-inner nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero h1 {
    font-size: clamp(2.4rem, 10vw, 3.5rem);
  }
  .projekte-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-nav {
    justify-content: center;
  }
  .leistung-card {
    padding: 36px 28px;
  }
  .section-header {
    margin-bottom: 44px;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }
  .btn {
    width: 100%;
    text-align: center;
  }
}