/* ============================================================
   Umweltberatung Weiland — Stylesheet
   Editorial, erdige Palette, mobil zuerst. Kein KI-Template-Look.
   ============================================================ */

:root {
  --green-900: #122019;
  --green-700: #1c3326;
  --green-600: #284a37;
  --green-500: #3a6b50;
  --sage:      #7fa886;
  --sage-soft: #c7d6c5;
  --sand:      #ece5d6;
  --cream:     #f7f4ed;
  --paper:     #fdfcf9;
  --bark:      #4a3f35;
  --ink:       #1d1f1b;
  --muted:     #5d5f57;
  --line:      #d9d2c4;
  --gold:      #b8893b;

  --maxw: 1180px;
  --radius: 14px;
  --shadow: 0 18px 50px -28px rgba(18,32,25,.45);
  --shadow-sm: 0 8px 24px -16px rgba(18,32,25,.5);

  --serif: "Fraunces", "Georgia", "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.12;
  color: var(--green-900);
  letter-spacing: -0.01em;
  margin: 0 0 .5em;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.1rem); }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); }

p { margin: 0 0 1.1em; }
a { color: var(--green-600); text-decoration: none; }
a:hover { color: var(--green-500); }

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

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

.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .74rem;
  font-weight: 700;
  color: var(--green-500);
  margin: 0 0 .9rem;
  display: inline-block;
}

.lead { font-size: 1.18rem; color: var(--muted); max-width: 62ch; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(253,252,249,.86);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; font-family: var(--serif); font-weight: 600; color: var(--green-900); font-size: 1.12rem; }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand small { display: block; font-family: var(--sans); font-size: .62rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); font-weight: 600; }

.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: .95rem; font-weight: 500; color: var(--ink); position: relative; padding: 6px 0; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--green-500); transition: width .25s ease; }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }

.nav-cta {
  background: var(--green-500); color: #fff; padding: 10px 20px; border-radius: 999px;
  font-weight: 600; font-size: .92rem; transition: background .2s, transform .2s;
}
.nav-cta:hover { background: #4c8062; color: #fff; transform: translateY(-1px); }

.burger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 24px; height: 2px; background: var(--green-900); margin: 5px 0; transition: .3s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--sans); font-weight: 600; font-size: .98rem;
  padding: 14px 26px; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform .2s, background .2s, box-shadow .2s; white-space: nowrap;
}
.btn-primary { background: var(--green-500); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: #4c8062; color: #fff; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--green-700); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--green-500); color: var(--green-500); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { position: relative; color: #fff; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(115deg, #0f1c15 0%, #1c3326 55%, #284a37 100%);
}
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: url("https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1740&q=70");
  background-size: cover; background-position: center; opacity: .42; mix-blend-mode: multiply;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,16,12,.82) 0%, rgba(8,16,12,.55) 45%, rgba(8,16,12,.15) 100%);
}
.hero .wrap { position: relative; z-index: 1; padding-top: clamp(70px, 12vw, 132px); padding-bottom: clamp(70px, 12vw, 132px); }
.hero .eyebrow { color: var(--sage); }
.hero h1 { color: #fff; max-width: 16ch; }
.hero p.lead { color: #e6ece7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 44px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.16); }
.hero-meta div { font-size: .9rem; color: #d7e0d9; }
.hero-meta strong { display: block; font-family: var(--serif); font-size: 1.5rem; color: #fff; }

/* ---------- Sections ---------- */
section { padding: clamp(56px, 9vw, 104px) 0; }
.section-head { max-width: 70ch; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.band-sand { background: var(--sand); }
.band-paper { background: var(--paper); }
.band-green { background: var(--green-900); color: #eaf0ea; }
.band-green h2, .band-green h3 { color: #fff; }
.band-green .eyebrow { color: var(--sage); }

/* intro split */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }
.media-frame { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); position: relative; aspect-ratio: 4/3; background: var(--green-700); }
.media-frame img { width: 100%; height: 100%; object-fit: cover; }

/* feature grid */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--sage); }
.card .ico { width: 46px; height: 46px; border-radius: 12px; background: var(--sage-soft); color: var(--green-700); display: grid; place-items: center; margin-bottom: 18px; }
.card .ico svg { width: 24px; height: 24px; }
.card h3 { font-size: 1.24rem; }
.card p { font-size: .98rem; color: var(--muted); margin-bottom: 0; }

/* process timeline */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; padding-top: 56px; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: 0; left: 0; font-family: var(--serif); font-size: 2.1rem; color: var(--sage); font-weight: 600;
}
.step h3 { font-size: 1.15rem; }
.step p { font-size: .94rem; color: var(--muted); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center; }
.stat strong { display: block; font-family: var(--serif); font-size: clamp(2.2rem, 5vw, 3.2rem); color: #fff; line-height: 1; }
.stat span { font-size: .9rem; color: var(--sage); letter-spacing: .04em; }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary {
  list-style: none; cursor: pointer; font-family: var(--serif); font-size: 1.18rem; color: var(--green-900);
  padding: 22px 40px 22px 0; position: relative; font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  font-family: var(--sans); font-size: 1.6rem; color: var(--green-500); transition: transform .25s;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--muted); margin: 0; }

/* CTA banner */
.cta-banner { text-align: center; }
.cta-banner h2 { max-width: 20ch; margin-left: auto; margin-right: auto; }
.cta-banner .lead { margin-left: auto; margin-right: auto; }

/* contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.contact-info dt { font-weight: 700; color: var(--green-700); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; margin-top: 18px; }
.contact-info dd { margin: 2px 0 0; font-size: 1.05rem; }
.contact-info dd a { color: var(--ink); }
.map { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-sm); aspect-ratio: 16/11; background: var(--sand); }
.map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(.2) contrast(1.05); }

/* form */
.form-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; font: inherit; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 10px; background: #fff; color: var(--ink); transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--green-500); box-shadow: 0 0 0 3px var(--sage-soft); }
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: .82rem; color: var(--muted); }
.form-status { display: none; padding: 14px 16px; border-radius: 10px; margin-bottom: 18px; font-weight: 600; }
.form-status.ok { display: block; background: #e3f0e8; color: var(--green-700); border: 1px solid var(--sage); }
.form-status.err { display: block; background: #f6e3e1; color: #8a2c22; border: 1px solid #e0a59c; }

/* references / logos */
.clients { display: flex; flex-wrap: wrap; gap: 14px 30px; align-items: center; opacity: .85; }
.clients span { font-family: var(--serif); font-size: 1.05rem; color: var(--green-700); }

.ref-list { display: grid; gap: 18px; }
.ref-item { display: grid; grid-template-columns: 130px 1fr; gap: 22px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.ref-item .tag { font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--green-500); background: var(--sage-soft); padding: 4px 10px; border-radius: 999px; justify-self: start; }
.ref-item h3 { font-size: 1.1rem; margin: 0 0 4px; }
.ref-item p { margin: 0; color: var(--muted); font-size: .95rem; }

/* breadcrumb */
.crumb { font-size: .82rem; color: var(--muted); padding: 18px 0 0; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--green-600); }

/* footer */
.site-footer { background: var(--green-900); color: #cdd6cd; padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 1rem; font-family: var(--sans); letter-spacing: .04em; margin-bottom: 16px; }
.site-footer a { color: #cdd6cd; display: block; padding: 4px 0; font-size: .95rem; }
.site-footer a:hover { color: #fff; }
.footer-brand p { color: #9fae9f; font-size: .92rem; max-width: 34ch; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 44px; padding-top: 22px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .84rem; color: #93a293; }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 36px 20px; }
  .split, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .burger { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 10px 24px 22px;
  }
  .nav-links.open a { padding: 12px 0; border-bottom: 1px solid var(--line); width: 100%; }
  .nav-links.open .nav-cta { margin-top: 12px; text-align: center; }
  .grid-3, .steps, .stats, .footer-grid { grid-template-columns: 1fr; }
  .ref-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ============================================================
   Mobile-Verbesserungen (sexier auf Handy + Laptop)
   ============================================================ */

/* Overflow / Notch-Schutz: kein horizontales Scrollen durch Rundungs- o.ä.-Fehler */
html, body { max-width: 100%; overflow-x: hidden; }

/* Tap-Targets groß genug (min 44px) – iOS/Android-Richtlinie */
.nav-links a, .burger, .faq summary, .footer-grid a, .btn { min-height: 44px; }
.nav-links a { display: inline-flex; align-items: center; }
.footer-grid a { padding: 8px 0; }

/* Sticky-Header auf kleinen Screens etwas schlanker */
@media (max-width: 640px) {
  .nav { height: 60px; }
  .burger { display: block; }
  .nav-links.open { top: 60px; }
  .brand { font-size: 1rem; }
  .brand small { font-size: .55rem; letter-spacing: .16em; }
  .brand svg { width: 26px; height: 26px; }

  /* Hero kompakter + Text nicht zu gewaltig */
  .hero .wrap { padding-top: clamp(48px, 14vw, 84px); padding-bottom: clamp(48px, 14vw, 84px); }
  .hero h1 { font-size: clamp(2rem, 9vw, 2.8rem); }
  .hero .lead { font-size: 1.02rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-meta { gap: 18px; margin-top: 30px; padding-top: 22px; }
  .hero-meta div { flex: 1 1 100%; }

  /* Generelle Section-Paddings enger */
  section { padding: clamp(44px, 11vw, 72px) 0; }
  .wrap { padding: 0 18px; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: clamp(1.6rem, 7vw, 2.1rem); }

  /* Split-Bild nicht zu hoch */
  .media-frame { aspect-ratio: 16/10; }
  .map { aspect-ratio: 4/3; }

  /* Buttons auf Handy volle Breite wo sinnvoll */
  .btn { width: 100%; justify-content: center; }
  .hero-actions .btn, .cta-banner .btn, .section-head + .grid-3 ~ * .btn { }

  /* Cards padding enger */
  .card { padding: 24px 20px; }
  .form-card { padding: 22px 18px; }

  /* Footer gestapelt + großzügiger */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  /* FAQ summary größer */
  .faq summary { font-size: 1.05rem; padding: 18px 36px 18px 0; }

  /* Referenz-Liste */
  .ref-item { padding: 18px 0; }

  /* Tel-Links auf Handy hervorheben (tap-to-call) */
  a[href^="tel:"] {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--green-600); font-weight: 600;
  }
}

/* Animierte Burger -> X */
.burger { position: relative; z-index: 60; }
.burger span { transition: transform .3s ease, opacity .2s ease; transform-origin: center; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Slide-/Fade-in für das Mobile-Menü */
@media (max-width: 640px) {
  .nav-links {
    display: block;
    position: absolute; top: 60px; left: 0; right: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 6px 18px 18px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: transform .25s ease, opacity .25s ease, visibility .25s ease;
    box-shadow: var(--shadow-sm);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-links a { display: block; width: 100%; padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-links .nav-cta { margin-top: 12px; text-align: center; }
}

/* Body-Scroll-Lock, wenn mobiles Menü offen ist */
body.nav-open { overflow: hidden; }

/* Safe-Area für Geräte mit Notch (iPhone etc.) */
.site-header { padding-top: env(safe-area-inset-top); }

/* Fluid-Zwischengröße: Tablet hoch (640–768) bekommt schon 1-Spalten bei grid wo sinnvoll */
@media (max-width: 768px) and (min-width: 641px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-links { transition: none; }
  .burger span { transition: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Passwort-Gate (Test-Zugriff) ---------- */
.gate-box {
  background: var(--paper); border-radius: var(--radius); padding: 40px 36px;
  max-width: 360px; width: 90%; text-align: center; box-shadow: var(--shadow);
}
.gate-logo { font-family: var(--serif); font-size: 1.3rem; color: var(--green-900); font-weight: 600; }
.gate-sub { color: var(--muted); font-size: .95rem; margin: 8px 0 22px; }
.gate-box input {
  width: 100%; font: inherit; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 10px; margin-bottom: 14px; text-align: center;
}
.gate-box input:focus { outline: none; border-color: var(--green-500); box-shadow: 0 0 0 3px var(--sage-soft); }
.gate-box button {
  width: 100%; font: inherit; font-weight: 600; padding: 12px; border: none; border-radius: 10px;
  background: var(--green-600); color: #fff; cursor: pointer; transition: background .2s;
}
.gate-box button:hover { background: var(--green-500); }
.gate-err { color: #a23b2f; font-size: .85rem; min-height: 1.1em; margin: 12px 0 0; }