/* ==========================================================================
   Dr. Kloppenburg und Partner GmbH – Modern Static Theme
   Light, professional, high-contrast, accessible & GDPR-compliant
   ========================================================================== */

:root {
  /* Primary & Brand Colors (Refined Executive Slate & Sapphire Blue) */
  --color-primary: #152c44;        /* Deep Slate Navy for headings/text */
  --color-primary-light: #23476e;  /* Medium Navy */
  --color-primary-dark: #0d1c2d;   /* Deep Navy */
  --color-brand-blue: #1b4975;     /* Core Brand Accent Blue */
  --color-brand-blue-light: #e9f1f8;/* Soft Tint Blue */
  
  /* Accent Color (Subtle Warm Sand / Champagne) */
  --color-accent: #9a762e;         /* Warm Sand/Bronze Accent */
  --color-accent-hover: #836425;   /* Darker Bronze */
  --color-accent-light: #faf7f0;   /* Light Sand Tint */
  
  /* Neutral & Text Colors */
  --color-text: #334155;           /* Main readable slate body text */
  --color-text-light: #475569;     /* Slate Muted text */
  --color-text-muted: #64748b;     /* Secondary Subtitle text */
  --color-text-dim: #94a3b8;       /* Footnote text */
  
  /* Backgrounds */
  --color-bg: #ffffff;             /* Pure White */
  --color-bg-alt: #f8fafc;         /* Crisp Soft Slate */
  --color-bg-card: #ffffff;        /* Card White */
  --color-bg-subtle: #f1f5f9;      /* Subtle Cool Grey/Blue */
  --color-border: #e2e8f0;         /* Border Color */
  --color-border-light: #edf2f7;   /* Subtle Border */
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Georgia", Cambria, "Times New Roman", Times, serif;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.07), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.07), 0 10px 10px -5px rgba(15, 23, 42, 0.02);
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  --max-width: 1200px;
  --transition: all 0.22s ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-brand-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

h1, .font-serif {
  font-family: var(--font-heading);
}

h1 { font-size: 2.45rem; letter-spacing: -0.01em; }
h2 { font-size: 1.85rem; margin-bottom: 0.85rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: 1.25rem;
}

p.lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-light);
}

.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-center { text-align: center; }

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-brand-blue);
  color: #ffffff;
  border-color: var(--color-brand-blue);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background-color: #ffffff;
  border-color: var(--color-brand-blue);
  color: var(--color-brand-blue);
  box-shadow: var(--shadow-sm);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--color-brand-blue);
  border-color: var(--color-brand-blue);
}

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

/* Top Bar - Bright & clean */
.top-bar {
  background-color: #ffffff;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--color-border);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.top-bar-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-bar-link {
  color: var(--color-text-light);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-link:hover {
  color: var(--color-brand-blue);
}

/* Header & Navigation */
.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.brand-logo {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-brand-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.35rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-brand-blue);
  background-color: var(--color-brand-blue-light);
}

.nav-link.active {
  font-weight: 600;
}

.nav-cta {
  margin-left: 0.5rem;
}

/* Mobile Nav Toggle */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-primary);
}

/* Hero Section - Light, friendly, airy & sophisticated */
.hero {
  position: relative;
  background: linear-gradient(180deg, #f3f6fa 0%, #ffffff 100%);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
  padding: 4.5rem 0 4.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: 100%;
  background: radial-gradient(circle at top right, rgba(27, 73, 117, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  max-width: 820px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-brand-blue);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-xs);
}

.hero h1 {
  color: var(--color-primary);
  font-size: 2.7rem;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.hero p {
  color: var(--color-text-light);
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Features Highlight Ribbon */
.highlight-ribbon {
  background-color: var(--color-bg);
  margin-top: 1rem;
  position: relative;
  z-index: 10;
}

.ribbon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  background-color: #ffffff;
  padding: 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.ribbon-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.ribbon-icon {
  width: 44px;
  height: 44px;
  background-color: var(--color-brand-blue-light);
  color: var(--color-brand-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ribbon-text h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.ribbon-text p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.45;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-brand-blue);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.1rem;
  margin-bottom: 0.85rem;
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 1.05rem;
  margin-bottom: 0;
}

/* Service Cards - Uniform & Clean */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-xs);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.service-icon-box {
  width: 52px;
  height: 52px;
  background-color: var(--color-brand-blue-light);
  color: var(--color-brand-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.service-card:hover .service-icon-box {
  background-color: var(--color-brand-blue);
  color: #ffffff;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  flex-grow: 1;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.service-link {
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-brand-blue);
}

.service-card:hover .service-link {
  color: var(--color-primary-dark);
}

/* Feature Boxes - Completely Uniform (No specific highlight box) */
.feature-box {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 2.25rem;
  box-shadow: var(--shadow-xs);
  margin-bottom: 1.75rem;
  transition: var(--transition);
}

.feature-box:hover {
  box-shadow: var(--shadow-md);
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.team-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.team-card-header {
  background-color: #f8fafc;
  border-bottom: 1px solid var(--color-border);
  padding: 1.75rem 2rem 1.5rem;
}

.team-card-header h3 {
  color: var(--color-primary);
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
}

.team-role {
  color: var(--color-brand-blue);
  font-size: 0.9rem;
  font-weight: 600;
}

.team-card-body {
  padding: 2rem;
  flex-grow: 1;
}

.qualification-list {
  list-style: none;
  margin: 1.25rem 0;
}

.qualification-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.65rem;
  font-size: 0.95rem;
  color: var(--color-text-light);
}

.qualification-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-brand-blue);
  font-weight: bold;
}

/* Locations / Contact Cards */
.location-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.location-card {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  box-shadow: var(--shadow-xs);
  position: relative;
}

.location-badge {
  display: inline-block;
  background-color: var(--color-brand-blue-light);
  color: var(--color-brand-blue);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.location-title {
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.contact-info-list {
  list-style: none;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.contact-info-item svg {
  flex-shrink: 0;
  color: var(--color-brand-blue);
  margin-top: 3px;
}

/* Form Styles */
.contact-form {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.contact-details-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background-color: #ffffff;
  transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-brand-blue);
  box-shadow: 0 0 0 3px rgba(27, 73, 117, 0.12);
}

/* Call to Action Banner - Modern subtle framed card */
.cta-banner {
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.cta-banner h2 {
  color: var(--color-primary);
  font-size: 1.95rem;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: var(--color-text-light);
  max-width: 650px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
}

/* Legal / Text Page */
.legal-content {
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3rem;
  box-shadow: var(--shadow-xs);
}

.legal-content h2 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 0.5rem;
  font-size: 1.4rem;
}

.legal-content h3 {
  margin-top: 1.5rem;
  font-size: 1.15rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.legal-content li {
  margin-bottom: 0.4rem;
}

/* Footer - Sophisticated, high-contrast, clean */
.site-footer {
  background-color: #0f1c2b;
  color: #94a3b8;
  padding: 4rem 0 2rem;
  font-size: 0.9rem;
  border-top: 1px solid #1e2e42;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand .brand-title {
  color: #ffffff;
  font-size: 1.25rem;
}

.footer-brand .brand-subtitle {
  color: #cbd5e1;
}

.footer-brand p {
  margin-top: 1rem;
  color: #94a3b8;
  font-size: 0.88rem;
  line-height: 1.6;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1rem;
  margin-bottom: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #cbd5e1;
  font-size: 0.88rem;
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: #64748b;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: #94a3b8;
}

.footer-bottom-links a:hover {
  color: #ffffff;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .ribbon-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .contact-details-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .team-grid,
  .location-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
    gap: 0.75rem;
    align-items: flex-start;
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
  }
  
  .nav-cta {
    margin-left: 0;
    width: 100%;
  }
  
  .nav-cta .btn {
    width: 100%;
  }
  
  .hero {
    padding: 3rem 0 3.5rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .legal-content {
    padding: 1.75rem;
  }
}