/* ===== Design Tokens ===== */
:root {
  --color-primary: #217346;
  --color-primary-dark: #1b5c38;
  --color-primary-tint: #eef6f0;
  --color-text: #2b2b2b;
  --color-text-secondary: #4B4F58;
  --color-bg: #ffffff;
  --color-bg-alt: #F5F5F5;
  --color-border: #e3e6e4;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;

  --max-width: 1200px;
  --radius: 10px;
  --shadow: 0 2px 16px rgba(33, 115, 70, 0.08);
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 17px;
}

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

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

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  margin: 0 0 0.6em;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

ul { margin: 0; padding: 0; list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75em 1.25em;
  z-index: 200;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* ===== Header ===== */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}

.logo:hover {
  text-decoration: none;
}

.logo img {
  width: 40px;
  height: 40px;
}

.main-nav ul {
  display: flex;
  gap: 2rem;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.8em 1.6em;
  border-radius: var(--radius);
  font-weight: 600;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-primary-tint) 100%);
  padding: 4.5rem 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}

.hero-bars {
  position: absolute;
  right: -20px;
  bottom: -10px;
  display: flex;
  align-items: flex-end;
  gap: 14px;
  opacity: 0.12;
  pointer-events: none;
}

.hero-bars span {
  display: block;
  width: 34px;
  background: var(--color-primary);
  border-radius: 6px 6px 0 0;
}

.hero-bars span:nth-child(1) { height: 70px; }
.hero-bars span:nth-child(2) { height: 130px; }
.hero-bars span:nth-child(3) { height: 95px; }
.hero-bars span:nth-child(4) { height: 165px; }
.hero-bars span:nth-child(5) { height: 110px; }

@media (max-width: 640px) {
  .hero-bars { display: none; }
}

/* ===== Sections ===== */
.section {
  padding: 4rem 0;
}

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

.section-intro {
  max-width: 640px;
  margin: 0 0 2.5rem;
}

.section-intro p {
  color: var(--color-text-secondary);
}

/* ===== Cards / Pillars ===== */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.pillar-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow);
}

.pillar-card .pillar-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-primary-tint);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.pillar-card p {
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .pillar-grid { grid-template-columns: 1fr; }
}

/* ===== KI callout (kleine 4. Säule) ===== */
.ki-callout {
  border: 1.5px dashed var(--color-primary);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  background: var(--color-primary-tint);
  max-width: 780px;
}

.ki-callout h3 {
  margin-bottom: 0.5rem;
}

.ki-callout p {
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
}

/* ===== Über mich ===== */
.profile-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: start;
}

.profile-photo img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.profile-content .lead {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

@media (max-width: 800px) {
  .profile-layout {
    grid-template-columns: 1fr;
  }
  .profile-photo {
    max-width: 220px;
  }
}

/* ===== Kontakt ===== */
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 1.15rem;
  margin-top: 1.5rem;
}

.contact-list a {
  color: var(--color-text);
  font-weight: 600;
}

.contact-list a:hover {
  color: var(--color-primary);
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding: 3rem 0 2rem;
  margin-top: 2rem;
  scroll-margin-top: 1.5rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-inner h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

.footer-meta {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.footer-meta a {
  color: var(--color-text-secondary);
}

/* ===== Impressum ===== */
.legal h2 {
  margin-top: 2rem;
}

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

/* ===== Mobile Nav ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 50;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav a {
    display: block;
    padding: 0.9rem 0;
  }

  .site-header {
    position: relative;
  }
}