/* ========================================
   KielBayTec – Website Stylesheet
   Professionell, modern, pragmatisch
   ======================================== */

:root {
  --primary: #1a5276;
  --primary-dark: #0e3a54;
  --primary-light: #2980b9;
  --accent: #27ae60;
  --accent-dark: #1e8449;
  --text: #2c3e50;
  --text-light: #5d6d7e;
  --bg: #ffffff;
  --bg-alt: #f4f7fa;
  --bg-dark: #0e2a3d;
  --border: #dce4ec;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --max-width: 1140px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

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

/* ---- NAV ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.logo span { color: var(--primary-light); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { background: var(--bg-alt); color: var(--primary); }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--radius);
  transition: all 0.25s;
  cursor: pointer;
  text-align: center;
  border: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
}

.btn-nav {
  background: var(--primary);
  color: #fff !important;
  padding: 8px 20px !important;
  font-size: 0.85rem !important;
}
.btn-nav:hover { background: var(--primary-dark); }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 100px 0 80px;
  text-align: center;
}

.hero-content { max-width: 800px; margin: 0 auto; }

.hero-tag {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero-sub {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
}
.hero-sub strong { color: #fff; }

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .btn-primary {
  background: var(--accent);
}
.hero .btn-primary:hover { background: var(--accent-dark); }

.hero .btn-secondary {
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.hero .btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}

.hero-trust {
  margin-top: 28px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.5px;
}

/* ---- PAGE HEADER ---- */
.page-header {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 80px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.page-header .hero-sub {
  max-width: 700px;
  margin: 0 auto;
  color: rgba(255,255,255,0.85);
}

.page-header .hero-tag {
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}

/* ---- SECTIONS ---- */
.section {
  padding: 80px 0;
}

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

.section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  text-align: center;
}

.section-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
  color: var(--text-light);
  font-size: 1.05rem;
}

.section-note {
  text-align: center;
  margin-top: 32px;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ---- VALUES GRID ---- */
.values { padding: 64px 0; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.value-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  transition: transform 0.2s, box-shadow 0.2s;
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.value-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.value-card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ---- STEPS GRID ---- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.step-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.alt-bg .step-card { background: #fff; }

.step-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-light);
  opacity: 0.2;
  margin-bottom: 8px;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.step-duration {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.step-card p:last-child {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ---- USE CASES ---- */
.usecases { background: var(--bg-alt); }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.usecase-item {
  background: #fff;
  padding: 28px 24px;
  border-radius: var(--radius);
  border-left: 4px solid var(--primary-light);
  transition: transform 0.2s;
}
.usecase-item:hover { transform: translateY(-2px); }

.usecase-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.usecase-item p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ---- CTA BOTTOM ---- */
.cta-bottom {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
  color: #fff;
  text-align: center;
}

.cta-bottom h2 { color: #fff; }

.cta-bottom p {
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 32px;
}

.cta-bottom .btn-primary { background: var(--accent); }
.cta-bottom .btn-primary:hover { background: var(--accent-dark); }
.cta-bottom .btn-secondary { border-color: rgba(255,255,255,0.5); color: #fff; }
.cta-bottom .btn-secondary:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

/* ---- PILLAR GRID (Leistungen) ---- */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.pillar-card {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 40px 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pillar-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.pillar-card h2 {
  text-align: left;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.pillar-lead {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.pillar-card ul {
  list-style: none;
  padding: 0;
}

.pillar-card li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text);
}

.pillar-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary-light);
  font-weight: 700;
}

/* ---- SYMPTOM GRID ---- */
.symptom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.symptom-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.symptom-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.symptom-item p { font-size: 0.95rem; color: var(--text); }

/* ---- DELIVERABLE GRID ---- */
.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.deliverable-card {
  background: #fff;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: relative;
}

.deliverable-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.deliverable-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.deliverable-card p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ---- SCOPE GRID ---- */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.scope-item {
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.scope-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.scope-item p {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ---- CHECKLIST ---- */
.checklist {
  list-style: none;
  max-width: 640px;
  margin: 32px auto 0;
}

.checklist li {
  position: relative;
  padding: 12px 0 12px 32px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ---- FAQ ---- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.faq-item {
  background: #fff;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.faq-item h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--text-light);
}

.faq-accordion {
  max-width: 720px;
  margin: 40px auto 0;
}

.faq-detail {
  border-bottom: 1px solid var(--border);
}

.faq-detail summary {
  padding: 18px 0;
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 32px;
}

.faq-detail summary::after {
  content: '+';
  position: absolute;
  right: 0;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--text-light);
  transition: transform 0.2s;
}

.faq-detail[open] summary::after {
  content: '−';
}

.faq-detail p {
  padding: 0 0 18px;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ---- ABOUT ---- */
.about-content { max-width: 800px; margin: 0 auto; }

.about-block {
  margin-bottom: 56px;
}

.about-block h2 {
  text-align: left;
  margin-bottom: 16px;
}

.about-block p {
  margin-bottom: 12px;
  color: var(--text);
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.principle {
  padding: 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.principle h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}

.principle p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0;
}

.dreiklang {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.dreiklang-item {
  padding: 28px 24px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  text-align: center;
}

.dreiklang-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.dreiklang-item p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ---- CONTACT ---- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
}

.contact-form-wrap h2 {
  text-align: left;
  margin-bottom: 24px;
}

.contact-form { display: flex; flex-direction: column; gap: 16px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 4px; }

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(41,128,185,0.1);
}

.form-check {
  flex-direction: row !important;
  align-items: flex-start;
  gap: 10px !important;
}

.form-check input { margin-top: 4px; }
.form-check label { font-size: 0.8rem; font-weight: 400; color: var(--text-light); }

.form-success {
  padding: 40px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  text-align: center;
}

.form-success h3 {
  color: var(--accent);
  margin-bottom: 8px;
}

.info-card {
  padding: 28px 24px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.info-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.info-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

/* ---- FOOTER ---- */
.footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer .logo { color: #fff; }
.footer .logo span { color: var(--primary-light); }

.footer p { font-size: 0.85rem; margin-top: 8px; }

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 8px; }

.footer-col a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.4); margin: 0; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .values-grid,
  .steps-grid,
  .pillar-grid,
  .dreiklang { grid-template-columns: 1fr; }

  .about-principles { grid-template-columns: 1fr; }

  .contact-layout { grid-template-columns: 1fr; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
  .mobile-toggle { display: block; }

  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 1.8rem; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 360px; }

  .section { padding: 56px 0; }

  .form-row { grid-template-columns: 1fr; }
}

/* ---- LANGUAGE SWITCHER ---- */
.lang-switch {
  display: flex;
  gap: 4px;
  margin-left: 12px;
  align-items: center;
}

.lang-btn {
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.lang-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.lang-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- NAV LANG (inline buttons) ---- */
.nav-lang {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-left: 8px;
  list-style: none;
}

/* ---- PAGE-HEADER BUTTONS (match hero styling) ---- */
.page-header .btn-secondary {
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.page-header .btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
}
.page-header .btn-primary {
  background: #fff;
  color: var(--primary);
}
.page-header .btn-primary:hover {
  background: rgba(255,255,255,0.9);
}

/* ================================
   Consent Banner (slim)
   ================================ */
.consent-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 9998;
  display: none;
}
.consent-banner {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  width: min(980px, calc(100% - 24px));
  background: #0b1220;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  z-index: 9999;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  padding: 16px;
  display: none;
}
.consent-banner h3 {
  margin: 0 0 6px 0;
  font-size: 1rem;
}
.consent-banner p {
  margin: 0;
  color: rgba(255,255,255,0.82);
  font-size: 0.9rem;
  line-height: 1.4;
}
.consent-row {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.consent-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.consent-actions .btn {
  padding: 10px 14px;
  font-size: 0.9rem;
}
.consent-actions .btn-secondary {
  border-color: rgba(255,255,255,0.35);
  color: #fff;
}
.consent-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.65);
}
.consent-link {
  color: rgba(255,255,255,0.9);
  text-decoration: underline;
}

.consent-modal {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(720px, calc(100% - 24px));
  background: #0b1220;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  z-index: 10000;
  box-shadow: 0 20px 60px rgba(0,0,0,0.55);
  padding: 18px;
  display: none;
}
.consent-modal h3 { margin: 0 0 10px; }
.consent-modal .consent-option {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid rgba(255,255,255,0.10);
}
.consent-modal .consent-option:first-of-type { border-top: 0; }
.consent-modal .consent-option small {
  display: block;
  color: rgba(255,255,255,0.72);
  margin-top: 4px;
}
.consent-modal label { display: flex; align-items: center; gap: 10px; }
.consent-modal input[type="checkbox"] { width: 18px; height: 18px; }

@media (max-width: 520px) {
  .consent-banner { bottom: 10px; }
  .consent-actions { width: 100%; }
  .consent-actions .btn { flex: 1; }
}