/* -----------------------------------------------------------------
   styles.css - geisten Consulting
   Optimierte Version mit Blog-Support
------------------------------------------------------------------------ */

:root {
  /* Farb- & Raum-Variablen */
  --text-color-dark: #213547;
  --text-color-light: #f7f9fc;
  --bg-dark: #1a1a1a;
  --bg-light: #ffffff;
  --bg-section-dark: #242424;
  --bg-section-light: #f8f9fa;
  --primary-color: #0077ff;
  --primary-color-hover: #005fcc;
  --border-color-light: rgba(0,119,255,0.2);
  --border-color-dark: rgba(0,119,255,0.4);
  --header-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --body-font: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 4rem;
}

/* --------------------------------------
   1. GLOBAL RESET
-------------------------------------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* --------------------------------------
   2. BASE TYPOGRAPHY
-------------------------------------- */
html {
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--bg-light);
  color: var(--text-color-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  overflow-y: scroll;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--header-font);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  text-align: center;
  color: var(--primary-color);
  margin-bottom: var(--space-xs);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--text-color-dark);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--text-color-dark);
  margin-top: var(--space-md);
}

h4 {
  font-size: 1.125rem;
  color: var(--text-color-dark);
  margin-top: var(--space-md);
}

p {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
  line-height: 1.75;
}

/* Blog-specific paragraph styling */
article p {
  max-width: 100%;
  margin-bottom: var(--space-md);
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-md);
}

li {
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: var(--space-xs);
}

/* Nested lists */
ul ul, ol ol, ul ol, ol ul {
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
}

/* Blog article lists */
article ul, article ol {
  max-width: 100%;
  padding-left: var(--space-lg);
}

article ul li, article ol li {
  margin-bottom: var(--space-sm);
}

/* Reset list style for service/industry sections */
/* entfernt: #services/#industries */

/* Links */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-color-hover);
  text-decoration: underline;
}

/* Blockquotes */
blockquote {
  font-style: italic;
  font-size: 1.125rem;
  padding: var(--space-md);
  margin: var(--space-lg) auto;
  max-width: 100%;
  border-left: 4px solid var(--primary-color);
  background-color: var(--bg-section-light);
  border-radius: 0.375rem;
}

blockquote cite {
  display: block;
  font-style: normal;
  font-size: 0.875rem;
  margin-top: var(--space-sm);
  color: #666;
}

/* Code blocks */
pre {
  background-color: var(--bg-section-light);
  border: 1px solid var(--border-color-light);
  border-radius: 0.375rem;
  padding: var(--space-md);
  margin: var(--space-md) auto;
  max-width: 100%;
  overflow-x: auto;
}

code {
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.875rem;
  background-color: var(--bg-section-light);
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
}

pre code {
  background-color: transparent;
  padding: 0;
}

.company-name {
  color: var(--primary-color);
  font-weight: 700;
}

/* --------------------------------------
   3. LAYOUT & CONTAINERS
-------------------------------------- */
body > header, 
body > main {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md) 0;
}

@media (min-width: 768px) {
  body > header, 
  body > main {
    width: 85%;
    padding: var(--space-lg) 0;
  }
}

/* Blog article container */
article {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space-md) 0;
}

/* --------------------------------------
   4. HEADER STYLES
-------------------------------------- */
body > header {
  text-align: center;
  margin-bottom: 0;
  padding-bottom: 0;
}

body > header h2 {
  text-align: center;
  margin-bottom: var(--space-md);
}

/* --------------------------------------
   5. SECTION STYLING
-------------------------------------- */
section {
  background: var(--bg-section-light);
  border: 1px solid var(--border-color-light);
  padding: var(--space-md);
  border-radius: 0.75rem;
  margin-bottom: var(--space-md);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  scroll-margin-top: calc(56px + var(--space-sm)); /* Offset für sticky Header + Mobile Bottombar */
}

section:first-child {
  margin-top: 0;
}

@media (min-width: 768px) {
  section {
    padding: var(--space-lg);
  }
}

/* Blog sections */
article section {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: 0;
  margin-bottom: var(--space-lg);
}

/* 6. HERO GRID (entfernt – nicht genutzt) */

/* 7. CTA (entfernt – nicht genutzt) */

/* 8. Services/Industries (entfernt) */

/* 9. FAQ (entfernt) */

/* 10. Newsletter-Formular (entfernt) */

/* --------------------------------------
   11. BOTTOM TAB NAVIGATION (Mobile)
-------------------------------------- */
.bottom-tab-bar {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  justify-content: space-around;
  align-items: center;
  min-height: 56px; /* konsistente Höhe auf Phone */
  background-color: rgba(248, 249, 250, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid rgba(226, 232, 240, 1);
  /* oben und unten wenig Padding, unten + Safe‑Area */
  padding-top: 4px;
  padding-bottom: calc(4px + env(safe-area-inset-bottom));
  z-index: 1000;
}

.bottom-tab-bar .tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 48px; /* einheitliche Tab-Höhe */
  color: rgba(74, 85, 104, 1);
  font-size: 0.75rem;
  gap: 4px;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.bottom-tab-bar .tab:hover {
  background-color: rgba(0, 0, 0, 0.05);
  text-decoration: none;
}

.bottom-tab-bar .tab-icon {
  font-size: 1.25rem;
}

.bottom-tab-bar .tab-icon svg {
  width: 24px;
  height: 24px;
}

.bottom-tab-bar .tab span:not(.tab-icon) {
  font-size: 0.6875rem;
}

.bottom-tab-bar .tab.active {
  color: var(--primary-color);
}

@media (min-width: 1024px) {
  .bottom-tab-bar {
    display: none;
  }
}

/* --------------------------------------
   12. TOP NAVIGATION BAR (Desktop)
-------------------------------------- */
header.navbar {
  display: none;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background-color: var(--bg-light);
  border-bottom: 1px solid var(--border-color-light);
  padding: var(--space-sm) var(--space-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

header.navbar .logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

header.navbar nav {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

header.navbar nav a {
  font-size: 0.95rem;
  color: var(--text-color-dark);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 0.375rem;
  transition: all 0.2s ease;
}

header.navbar nav a:hover {
  background-color: rgba(0,119,255,0.1);
  color: var(--primary-color);
  text-decoration: none;
}

header.navbar nav a.active {
  background-color: rgba(0,119,255,0.1);
  color: var(--primary-color);
}

/* Dynamische Aktiv-Zustände (CSS-only) via :target */
:root:not(:has(:target)) header.navbar nav a[href="#idee"] {
  background-color: rgba(0,119,255,0.1);
  color: var(--primary-color);
}
:root:has(#idee:target) header.navbar nav a[href="#idee"],
:root:has(#modelle:target) header.navbar nav a[href="#modelle"],
:root:has(#kontakt:target) header.navbar nav a[href="#kontakt"] {
  background-color: rgba(0,119,255,0.1);
  color: var(--primary-color);
}

/* Bottom-Tab aktiv je nach Section (Start = alle Index-Sections) */
:root:not(:has(:target)) .bottom-tab-bar a[href="#idee"],
:root:has(#idee:target) .bottom-tab-bar a[href="#idee"],
:root:has(#modelle:target) .bottom-tab-bar a[href="#idee"],
:root:has(#kontakt:target) .bottom-tab-bar a[href="#idee"] {
  color: var(--primary-color);
}

@media (min-width: 1024px) {
  header.navbar {
    display: flex;
  }
}

/* --------------------------------------
   13. DARK MODE STYLES
-------------------------------------- */
@media (prefers-color-scheme: dark) {
  html {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
  }
  
  section {
    background: var(--bg-section-dark);
    border-color: var(--border-color-dark);
  }
  
  h2, h3, h4, h5, h6 {
    color: var(--text-color-light);
  }
  
  blockquote {
    background-color: var(--bg-section-dark);
    border-left-color: var(--primary-color);
  }
  
  pre {
    background-color: var(--bg-section-dark);
    border-color: var(--border-color-dark);
  }
  
  code {
    background-color: var(--bg-section-dark);
  }
  
  /* Navigation Dark Mode Fix */
  header.navbar {
    background-color: var(--bg-section-dark);
    border-bottom-color: var(--border-color-dark);
  }
  
  header.navbar nav a {
    color: var(--text-color-light);
  }
  
  header.navbar nav a:hover {
    background-color: rgba(0,119,255,0.2);
    color: var(--primary-color);
  }
  
  header.navbar nav a.active {
    background-color: rgba(0,119,255,0.2);
    color: var(--primary-color);
  }
  
  /* Bottom Tab Bar Dark Mode */
  .bottom-tab-bar {
    background-color: rgba(26, 26, 26, 0.95);
    border-top-color: rgba(48, 48, 48, 1);
  }
  
  .bottom-tab-bar .tab {
    color: rgba(156, 163, 175, 1);
  }
  
  .bottom-tab-bar .tab:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }
  
  .bottom-tab-bar .tab.active {
    color: var(--primary-color);
  }
  
  /* Form inputs Dark Mode (entfernt) */
}

/* --------------------------------------
   14. FOOTER
-------------------------------------- */
footer {
  text-align: center;
  padding: var(--space-md) var(--space-sm);
  padding-bottom: calc(var(--space-lg) + 60px);
  font-size: 0.875rem;
  color: #666;
  margin-top: var(--space-lg);
}

@media (min-width: 1024px) {
  footer {
    padding-bottom: var(--space-md);
  }
}

footer address {
  font-style: normal;
}

footer a {
  color: var(--primary-color);
}

footer a:hover {
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  footer {
    color: #999;
  }
}

/* --------------------------------------
   15. FADE-IN ANIMATION
-------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------
   16. TYPEWRITER
-------------------------------------- */
#typewriterContainer {
  text-align: center;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 300;
  color: var(--text-color-dark);
  margin-bottom: 0;
  margin-top: calc(var(--space-xs) * -1);
  min-height: 2em;
  white-space: pre-wrap;
}

@media (prefers-color-scheme: dark) {
  #typewriterContainer {
    color: var(--text-color-light);
  }
}

#typedCursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background-color: var(--primary-color);
  animation: blink 1s infinite;
  vertical-align: text-bottom;
  margin-left: 2px;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* --------------------------------------
   17. BLOG-SPECIFIC STYLES
-------------------------------------- */

/* Blog post header */
article header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-color-light);
}

article header h1 {
  text-align: left;
  margin-bottom: var(--space-sm);
}

/* Blog metadata */
.blog-meta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: #666;
}

.blog-meta time,
.blog-meta .author,
.blog-meta .category {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Blog content spacing */
article > * + * {
  margin-top: var(--space-md);
}

article h2 {
  text-align: left;
  padding-top: var(--space-md);
  margin-top: var(--space-xl);
  border-top: 1px solid var(--border-color-light);
}

article h2:first-of-type {
  border-top: none;
  margin-top: var(--space-lg);
}

article h3,
article h4,
article h5,
article h6 {
  text-align: left;
}

/* Blog images */
article img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: var(--space-md) auto;
  display: block;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Blog tables */
article table {
  width: 100%;
  margin: var(--space-md) auto;
  border-collapse: collapse;
  font-size: 0.9rem;
}

article table th,
article table td {
  padding: var(--space-sm);
  text-align: left;
  border-bottom: 1px solid var(--border-color-light);
}

article table th {
  font-weight: 600;
  background-color: var(--bg-section-light);
}

@media (prefers-color-scheme: dark) {
  article header {
    border-bottom-color: var(--border-color-dark);
  }
  
  article h2 {
    border-top-color: var(--border-color-dark);
  }
  
  .blog-meta {
    color: #999;
  }
  
  article table th {
    background-color: var(--bg-section-dark);
  }
  
  article table th,
  article table td {
    border-bottom-color: var(--border-color-dark);
  }
}

/* --------------------------------------
   18. ACCESSIBILITY & UTILITIES
-------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles for keyboard navigation */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Prevent text selection on buttons */
.tab {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Print styles */
@media print {
  .navbar,
  .bottom-tab-bar,
  #newsletter,
  video {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  section,
  article {
    page-break-inside: avoid;
  }
  
  h2, h3 {
    page-break-after: avoid;
  }
}

/* --------------------------------------
   19. SYNTAX HIGHLIGHTING (for code)
-------------------------------------- */
.keyword {
  color: #0077ff;
  font-weight: 600;
}

.string {
  color: #22863a;
}

.comment {
  color: #6a737d;
  font-style: italic;
}

.number {
  color: #e36209;
}