/* ==========================================================================
   Green Construction GmbH — Design System
   Reines CSS, keine Frameworks. Akzentfarbe wird je Bereich per body-Klasse
   gesetzt (siehe Custom Properties unten).
   ========================================================================== */

:root {
  /* Neutrals */
  --ink: #1b241d;
  --ink-soft: #4b5a4f;
  --bg: #faf9f5;
  --surface: #ffffff;
  --surface-alt: #f2f3ee;
  --border: #dfe3da;

  /* Brand green (Startseite, Logo, Sportplatzbau) */
  --green-dark: #1b5e20;
  --green: #2e7d32;
  --green-mid: #4c8c3f;
  --green-light: #8bc34a;
  --green-tint: #eaf4e3;

  /* Hoch- und Tiefbau */
  --blue-dark: #0d3b66;
  --blue: #1565c0;
  --blue-light: #64b5f6;
  --blue-tint: #e8f1fb;

  /* Entsorgung & Verwertung */
  --orange-dark: #b45309;
  --orange: #e2650f;
  --orange-light: #ffb74d;
  --orange-tint: #fdf1e3;

  /* Active accent (default = brand green) */
  --accent-dark: var(--green-dark);
  --accent: var(--green);
  --accent-light: var(--green-light);
  --accent-tint: var(--green-tint);

  --font-sans: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", serif;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(27, 36, 29, 0.08);
  --shadow-md: 0 8px 24px rgba(27, 36, 29, 0.10);
  --container: 1160px;
}

body.hoch-tiefbau {
  --accent-dark: var(--blue-dark);
  --accent: var(--blue);
  --accent-light: var(--blue-light);
  --accent-tint: var(--blue-tint);
}

body.entsorgung {
  --accent-dark: var(--orange-dark);
  --accent: var(--orange);
  --accent-light: var(--orange-light);
  --accent-tint: var(--orange-tint);
}

/* ---------------------------------------------------------------------- */
/* Reset / Base                                                            */
/* ---------------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent-dark); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.25em; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
section { padding: 72px 0; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------------------------------------------------------------------- */
/* Header / Navigation                                                     */
/* ---------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 245, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--green-dark);
}
.brand img { width: 44px; height: 44px; }
.brand-word {
  font-family: var(--font-serif);
  font-variant: small-caps;
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  font-weight: 700;
  color: var(--green-dark);
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.96rem;
  transition: background 0.15s ease, color 0.15s ease;
}
.main-nav a:hover { background: var(--surface-alt); color: var(--ink); }
.main-nav a.is-active { color: var(--accent-dark); background: var(--accent-tint); }
.main-nav a.nav-cta {
  background: var(--green-dark);
  color: #fff;
  margin-left: 8px;
}
.main-nav a.nav-cta:hover { background: var(--green); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: "";
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* ---------------------------------------------------------------------- */
/* Hero                                                                    */
/* ---------------------------------------------------------------------- */

.hero {
  padding: 88px 0 64px;
  background:
    radial-gradient(1100px 460px at 85% -10%, var(--accent-tint), transparent 60%),
    var(--bg);
}
.hero .eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-tint);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  max-width: 20ch;
  color: var(--ink);
}
.hero p.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 62ch;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------------------------------------------------------------- */
/* Buttons                                                                 */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent-dark); color: #fff; }
.btn-primary:hover { background: var(--accent); box-shadow: var(--shadow-md); }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--ink); }
.btn-secondary:hover { border-color: var(--accent-dark); color: var(--accent-dark); }

/* ---------------------------------------------------------------------- */
/* Area tiles (Startseite)                                                 */
/* ---------------------------------------------------------------------- */

.tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--tile-accent, var(--green)); }
.tile-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--tile-tint, var(--green-tint));
  color: var(--tile-accent, var(--green-dark));
}
.tile-icon svg { width: 30px; height: 30px; }
.tile h3 { font-size: 1.3rem; margin-bottom: 2px; }
.tile p { color: var(--ink-soft); margin-bottom: 0; flex-grow: 1; }
.tile .tile-link { font-weight: 700; color: var(--tile-accent, var(--green-dark)); }
.tile.sportplatzbau { --tile-accent: var(--green-dark); --tile-tint: var(--green-tint); }
.tile.hoch-tiefbau { --tile-accent: var(--blue-dark); --tile-tint: var(--blue-tint); }
.tile.entsorgung { --tile-accent: var(--orange-dark); --tile-tint: var(--orange-tint); }

/* ---------------------------------------------------------------------- */
/* Generic sections                                                        */
/* ---------------------------------------------------------------------- */

.section-alt { background: var(--surface-alt); }
.section-head { max-width: 62ch; margin-bottom: 40px; }
.section-head .eyebrow {
  font-weight: 700; font-size: 0.82rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-dark); margin-bottom: 10px; display: block;
}
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p { color: var(--ink-soft); }

.grid-2 { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }

.service-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; list-style: none; padding: 0; }
.service-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.service-list li::before {
  content: "";
  flex-shrink: 0;
  width: 10px; height: 10px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.stat-row { display: flex; gap: 40px; flex-wrap: wrap; margin-top: 8px; }
.stat b { display: block; font-size: 2rem; color: var(--accent-dark); }
.stat span { color: var(--ink-soft); font-size: 0.92rem; }

/* Certification strip */
.cert-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.cert-strip .container {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  padding: 28px 24px;
}
.cert-strip .cert-label {
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}
.cert-badges { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.cert-badges img { width: 84px; height: 84px; flex-shrink: 0; }

/* ---------------------------------------------------------------------- */
/* Contact form                                                            */
/* ---------------------------------------------------------------------- */

.contact-section { background: var(--ink); color: #fff; }
.contact-section .section-head h2 { color: #fff; }
.contact-section .section-head p { color: #c8d0c9; }
.contact-section .section-head .eyebrow { color: var(--accent-light); }

.contact-form {
  background: var(--surface);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  box-shadow: var(--shadow-md);
}
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-weight: 700; font-size: 0.9rem; }
.form-field input,
.form-field select,
.form-field textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--ink);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-consent { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: var(--ink-soft); }
.form-consent input { margin-top: 4px; }
.form-status {
  min-height: 1.4em;
  font-weight: 600;
  font-size: 0.92rem;
}
.form-status[data-state="success"] { color: var(--green-dark); }
.form-status[data-state="error"] { color: #c62828; }
.form-status[data-state="sending"] { color: var(--ink-soft); }

/* ---------------------------------------------------------------------- */
/* Footer                                                                  */
/* ---------------------------------------------------------------------- */

.site-footer { background: var(--surface-alt); border-top: 1px solid var(--border); padding: 56px 0 28px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-grid h4 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-grid a { color: var(--ink); text-decoration: none; font-weight: 500; }
.footer-grid a:hover { color: var(--accent-dark); }
.footer-brand p { color: var(--ink-soft); max-width: 36ch; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.footer-bottom a { color: var(--ink-soft); }

/* ---------------------------------------------------------------------- */
/* Legal pages                                                             */
/* ---------------------------------------------------------------------- */

.legal { padding: 56px 0 96px; }
.legal .container { max-width: 800px; }
.legal h1 { margin-bottom: 24px; }
.legal h2 { font-size: 1.25rem; margin-top: 2em; }
.legal .placeholder {
  background: #fff3cd;
  border: 1px solid #ffe08a;
  color: #6b4d00;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
}
.legal .note {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------------------- */
/* Responsive                                                              */
/* ---------------------------------------------------------------------- */

@media (max-width: 900px) {
  .tiles { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-form { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-header .container { height: 72px; }
  .brand { gap: 8px; min-width: 0; }
  .brand img { width: 36px; height: 36px; flex-shrink: 0; }
  .brand-word { font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .nav-toggle { display: flex; flex-shrink: 0; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    gap: 4px;
    display: none;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 14px 16px; }
  .main-nav a.nav-cta { margin-left: 0; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
}

@media (max-width: 480px) {
  .cert-strip .container { flex-direction: column; align-items: flex-start; }
}