/* =============================================================
   /root Systemberatung — Design V3: "Licht & Luft"
   Hell, offen, zeitgemäß — weißer Hintergrund, Petrol-Akzente
   Komplementärfarbe: Helles Amber/Gold
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --color-primary:      #1E6B7F;   /* Mittleres Petrol — gut sichtbar auf Weiß */
  --color-accent:       #C8913A;   /* Gedämpftes Gold/Amber */
  --color-accent-light: #DDB060;   /* Helleres Gold */
  --color-bg:           #FFFFFF;   /* Reines Weiß */
  --color-bg-dark:      #1E6B7F;
  --color-text:         #1B3540;   /* Dunkles Petrol-Schwarz */
  --color-text-muted:   #4D7585;
  --color-border:       #C8E0E8;   /* Helles Petrol-Blau */
  --color-white:        #FFFFFF;
  --color-card-bg:      #EBF6FA;   /* Sehr helles Petrol-Tint */

  --font-serif:  'Playfair Display', Georgia, serif;
  --font-sans:   'Inter', system-ui, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 4px rgba(30,107,127,0.07);
  --shadow-md: 0 6px 24px rgba(30,107,127,0.12);

  --max-width: 1100px;
  --transition: 0.25s ease;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul { list-style: none; }

/* === Typography === */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  line-height: 1.25; font-weight: 600;
}
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); font-weight: 500; }
h4 { font-size: 1.1rem; font-weight: 500; }
p { margin-bottom: 1em; color: var(--color-text); }
p:last-child { margin-bottom: 0; }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }

/* === Layout === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-md); }
.section { padding: var(--space-2xl) 0; }
.section--alt { background-color: var(--color-card-bg); }
.section--dark { background-color: var(--color-primary); color: var(--color-white); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: var(--color-white); }
.section--dark p { color: rgba(255,255,255,0.8); }

.section-label {
  font-family: var(--font-sans); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-accent);
  margin-bottom: var(--space-xs);
}
.section-header { margin-bottom: var(--space-xl); }
.section-header h2 { margin-bottom: var(--space-sm); }
.section-header p { font-size: 1.1rem; color: var(--color-text-muted); max-width: 600px; }

/* === Navigation — hell/transparent === */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: 0 2px 20px rgba(30,107,127,0.10); }
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-md);
}
.nav__logo { display: flex; align-items: center; gap: var(--space-xs); text-decoration: none; }
.nav__logo-icon { width: 36px; height: 36px; }
.nav__logo-text { font-family: var(--font-serif); font-size: 1.15rem; font-weight: 600; color: var(--color-primary); line-height: 1.1; }
.nav__logo-sub { font-family: var(--font-sans); font-size: 0.65rem; font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); display: block; }
.nav__links { display: flex; align-items: center; gap: var(--space-lg); }
.nav__links a { font-size: 0.875rem; font-weight: 500; color: var(--color-text); letter-spacing: 0.02em; transition: color var(--transition); position: relative; }
.nav__links a::after { content: ''; position: absolute; bottom: -3px; left: 0; width: 0; height: 1.5px; background: var(--color-primary); transition: width var(--transition); }
.nav__links a:hover, .nav__links a.active { color: var(--color-primary); }
.nav__links a:hover::after, .nav__links a.active::after { width: 100%; }
.nav__cta {
  background: var(--color-primary) !important; color: var(--color-white) !important;
  padding: 0.5rem 1.25rem !important; border-radius: var(--radius-sm) !important; font-weight: 500 !important;
}
.nav__cta::after { display: none !important; }
.nav__cta:hover { background: #166275 !important; opacity: 1; }
.nav__hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.nav__hamburger span { display: block; width: 24px; height: 2px; background: var(--color-primary); transition: all var(--transition); border-radius: 2px; }
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__mobile {
  display: none; position: fixed; top: 68px; left: 0; right: 0;
  background: var(--color-white); border-bottom: 1px solid var(--color-border);
  padding: var(--space-md); flex-direction: column; gap: var(--space-sm); box-shadow: var(--shadow-md); z-index: 99;
}
.nav__mobile.open { display: flex; }
.nav__mobile a { font-size: 1rem; color: var(--color-text); font-weight: 500; padding: var(--space-xs) 0; border-bottom: 1px solid var(--color-border); }
.nav__mobile a:last-child { border-bottom: none; }
.page-top { padding-top: 68px; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem; border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.02em; cursor: pointer; border: none;
  transition: all var(--transition); text-decoration: none;
}
.btn--primary { background: var(--color-primary); color: var(--color-white); }
.btn--primary:hover {
  background: #166275; color: var(--color-white);
  transform: translateY(-1px); box-shadow: 0 4px 12px rgba(30,107,127,0.3);
}
.btn--outline { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: var(--color-white); }
.btn--outline-light { background: transparent; color: var(--color-white); border: 1.5px solid rgba(255,255,255,0.6); }
.btn--outline-light:hover { background: rgba(255,255,255,0.12); color: var(--color-white); border-color: var(--color-white); }

/* ===================================================================
   HERO — Helles Split-Layout mit großem Foto
   =================================================================== */
.hero {
  min-height: 90vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  background: var(--color-white);
  overflow: hidden;
}

.hero::before { display: none; }
.hero::after { display: none; }

.hero__inner {
  padding: calc(68px + var(--space-2xl)) var(--space-xl) var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: none;
  position: relative;
  z-index: 1;
}

/* Foto-Hälfte */
.hero__photo {
  position: relative;
  overflow: hidden;
}
.hero__photo::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?auto=format&fit=crop&w=900&q=80');
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}
.hero__photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255,255,255,0.15) 0%, transparent 40%);
}

.hero__label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-md);
}
.hero__title {
  color: var(--color-primary); margin-bottom: var(--space-md);
  font-size: clamp(2.2rem, 4vw, 3.6rem);
}
.hero__title em { color: var(--color-accent); font-style: normal; }
.hero__subtitle {
  font-size: 1.05rem; color: var(--color-text-muted);
  margin-bottom: var(--space-lg); max-width: 480px; line-height: 1.8;
}
.hero__actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* === Value Strip === */
.value-strip {
  display: flex; gap: 0;
  border-top: 3px solid var(--color-primary);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.value-item { flex: 1; padding: var(--space-lg) var(--space-md); text-align: center; border-right: 1px solid var(--color-border); }
.value-item:last-child { border-right: none; }
.value-item__number { font-family: var(--font-serif); font-size: 2.5rem; color: var(--color-primary); font-weight: 700; line-height: 1; margin-bottom: var(--space-xs); }
.value-item__label { font-size: 0.875rem; color: var(--color-text-muted); font-weight: 500; }

/* === Cards === */
.card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-lg);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.card__icon { width: 44px; height: 44px; margin-bottom: var(--space-md); color: var(--color-primary); }
.card h3 { margin-bottom: var(--space-xs); font-size: 1.15rem; }
.card p { font-size: 0.92rem; color: var(--color-text-muted); margin-bottom: 0; }

/* === Grid === */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-md); }

/* === Kompetenz Cards === */
.kompetenz-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-lg); box-shadow: var(--shadow-sm);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.kompetenz-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--color-primary);
  opacity: 0; transition: opacity var(--transition);
}
.kompetenz-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.kompetenz-card:hover::before { opacity: 1; }
.kompetenz-card__icon { width: 40px; height: 40px; color: var(--color-primary); margin-bottom: var(--space-md); }
.kompetenz-card h3 { font-size: 1.1rem; margin-bottom: var(--space-xs); }
.kompetenz-card p { font-size: 0.9rem; color: var(--color-text-muted); margin-bottom: var(--space-sm); }
.tech-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: var(--space-sm); }
.tech-tag {
  font-size: 0.72rem; font-weight: 500; background: var(--color-card-bg);
  color: var(--color-primary); padding: 0.25rem 0.6rem; border-radius: 20px;
  letter-spacing: 0.02em; border: 1px solid var(--color-border);
}

/* === Referenzen === */
.ref-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-md); }
.ref-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-md) var(--space-lg);
  display: flex; flex-direction: column; gap: var(--space-xs);
  transition: all var(--transition); box-shadow: var(--shadow-sm);
}
.ref-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.ref-card__branche { font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-accent); }
.ref-card__name { font-family: var(--font-serif); font-size: 1rem; color: var(--color-primary); font-weight: 500; }

/* === Über mich === */
.about-layout { display: grid; grid-template-columns: 1fr 1.6fr; gap: var(--space-xl); align-items: center; }
.about-image-wrap { position: relative; }
.about-image-placeholder {
  width: 100%; aspect-ratio: 3/4; background: var(--color-card-bg);
  border-radius: var(--radius-lg); display: flex; align-items: center;
  justify-content: center; color: var(--color-text-muted); font-size: 0.85rem;
  border: 2px dashed var(--color-border);
}
.about-image-wrap::after {
  content: ''; position: absolute; bottom: -16px; right: -16px;
  width: 100%; height: 100%; border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg); z-index: -1; opacity: 0.2;
}
.about__quote {
  border-left: 3px solid var(--color-accent); padding-left: var(--space-md);
  margin: var(--space-lg) 0; font-family: var(--font-serif); font-size: 1.15rem;
  color: var(--color-primary); line-height: 1.6; font-style: italic;
}

/* === Kontakt === */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--space-xl); align-items: start; }
.contact-info h3 { margin-bottom: var(--space-md); }
.contact-info__item { display: flex; gap: var(--space-sm); margin-bottom: var(--space-md); align-items: flex-start; }
.contact-info__item-icon { width: 20px; height: 20px; color: var(--color-primary); flex-shrink: 0; margin-top: 2px; }
.contact-info__item-text { font-size: 0.95rem; }
.contact-info__item-text strong { display: block; font-weight: 600; color: var(--color-primary); margin-bottom: 0.15rem; }
.contact-portrait { width: 100%; max-width: 260px; border-radius: var(--radius-md); margin-top: var(--space-lg); box-shadow: var(--shadow-md); }
.form { display: flex; flex-direction: column; gap: var(--space-sm); }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-label { font-size: 0.85rem; font-weight: 500; color: var(--color-primary); }
.form-input, .form-textarea {
  font-family: var(--font-sans); font-size: 0.95rem; color: var(--color-text);
  background: var(--color-white); border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 0.7rem 0.9rem;
  transition: border-color var(--transition); width: 100%;
}
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--color-primary); }
.form-textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-sm); }
.form-note { font-size: 0.8rem; color: var(--color-text-muted); }
.map-wrap { height: 280px; background: var(--color-card-bg); border-radius: var(--radius-md); border: 1px solid var(--color-border); margin-top: var(--space-lg); overflow: hidden; }
.map-wrap iframe { width: 100%; height: 100%; border: none; }

/* === Page Header — mit Petrol-Fotostreifen === */
.page-header {
  background: var(--color-primary);
  background-image: url('https://images.unsplash.com/photo-1544197150-b99a580bb7a8?auto=format&fit=crop&w=1600&q=80');
  background-size: cover;
  background-position: center;
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
  position: relative;
}
.page-header::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(30, 107, 127, 0.85);
}
.page-header > * { position: relative; z-index: 1; }
.page-header h1 { color: var(--color-white); margin-bottom: var(--space-sm); }
.page-header p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 540px; margin: 0 auto; }

/* === Dividers === */
.divider { width: 48px; height: 2px; background: var(--color-accent); margin: var(--space-md) 0; }
.divider--center { margin: var(--space-md) auto; }

/* === Legal === */
.legal-content { max-width: 780px; margin: 0 auto; }
.legal-content h2 { font-size: 1.4rem; margin-top: var(--space-xl); margin-bottom: var(--space-sm); padding-top: var(--space-lg); border-top: 1px solid var(--color-border); }
.legal-content h2:first-of-type { border-top: none; margin-top: 0; padding-top: 0; }
.legal-content h3 { font-size: 1.05rem; margin-top: var(--space-md); margin-bottom: var(--space-xs); }
.legal-content p, .legal-content li { font-size: 0.92rem; color: var(--color-text-muted); }
.legal-content ul { list-style: disc; padding-left: var(--space-md); margin-bottom: var(--space-sm); }

/* === CTA Section — Petrol mit Foto === */
.cta-section {
  background-color: var(--color-primary);
  background-image: url('https://images.unsplash.com/photo-1550751827-4bd374173828?auto=format&fit=crop&w=1600&q=80');
  background-size: cover; background-position: center;
  position: relative; padding: var(--space-2xl) 0; text-align: center;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(30, 107, 127, 0.86);
}
.cta-section > * { position: relative; z-index: 1; }
.cta-section h2 { color: var(--color-white); margin-bottom: var(--space-sm); }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: var(--space-lg); }
.cta-section .btn--white { background: var(--color-white); color: var(--color-primary); font-weight: 600; }
.cta-section .btn--white:hover { background: #f0fbfd; }

/* === Footer === */
.footer { background: #0E3D49; color: rgba(255,255,255,0.75); padding: var(--space-xl) 0 var(--space-lg); }
.footer__inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: var(--space-xl); margin-bottom: var(--space-xl); }
.footer__brand .nav__logo-text { color: var(--color-white); font-size: 1.2rem; }
.footer__brand .nav__logo-sub { color: rgba(255,255,255,0.5); }
.footer__brand p { font-size: 0.875rem; color: rgba(255,255,255,0.6); margin-top: var(--space-sm); line-height: 1.7; }
.footer__heading { font-family: var(--font-sans); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-sm); }
.footer__links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a { font-size: 0.875rem; color: rgba(255,255,255,0.65); transition: color var(--transition); }
.footer__links a:hover { color: var(--color-accent); }
.footer__contact-item { display: flex; gap: 0.5rem; font-size: 0.875rem; color: rgba(255,255,255,0.65); margin-bottom: 0.5rem; align-items: flex-start; }
.footer__contact-item svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 3px; color: var(--color-accent); }
.footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--space-md); display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; color: rgba(255,255,255,0.4); }
.footer__bottom a { color: rgba(255,255,255,0.4); }
.footer__bottom a:hover { color: var(--color-accent); }

/* === Responsive === */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .hero { grid-template-columns: 1fr; }
  .hero__photo { display: none; }
  .hero__inner { padding: calc(68px + var(--space-lg)) var(--space-md) var(--space-xl); }
  .hero { background: linear-gradient(135deg, var(--color-card-bg), var(--color-white)); min-height: 75vh; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .about-layout { grid-template-columns: 1fr; }
  .about-image-wrap { max-width: 280px; margin: 0 auto; }
  .contact-layout { grid-template-columns: 1fr; }
  .value-strip { flex-direction: column; }
  .value-item { border-right: none; border-bottom: 1px solid var(--color-border); }
  .value-item:last-child { border-bottom: none; }
}
@media (max-width: 600px) {
  :root { --space-2xl: 4rem; --space-xl: 3rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer__bottom { flex-direction: column; gap: var(--space-xs); text-align: center; }
  .form-row { grid-template-columns: 1fr; }
}