/* ===================================
   OTONGO.think Landing Page Styles
   =================================== */

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette */
  --color-petrol: #264653;
  --color-turquoise: #2a9d8f;
  --color-yellow: #e9c46a;
  --color-red: #e76f51;
  --color-light: #f1faee;
  --color-white: #ffffff;

  /* Typography */
  --font-primary:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 18px;
  --line-height-base: 1.8;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 8rem;
}

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-primary);
  line-height: var(--line-height-base);
  color: var(--color-petrol);
  background: var(--color-light);
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.3;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  text-transform: uppercase;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 400;
}

p {
  margin-bottom: var(--spacing-sm);
  max-width: 65ch;
}

.lead {
  font-size: 1.3rem;
  font-weight: 300;
  line-height: 1.6;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Sections */
.section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xxl) 0;
  position: relative;
  transition: background 0.8s ease;
}

/* Hero Section */
.section-hero {
  background: linear-gradient(135deg, var(--color-petrol) 0%, #1a3a44 100%);
  color: var(--color-light);
  position: relative;
  overflow: hidden;
}

.section-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(42, 157, 143, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(233, 196, 106, 0.1) 0%, transparent 50%);
  opacity: 0.3;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.resonance-circle {
  width: 200px;
  height: 200px;
  margin: 0 auto var(--spacing-lg);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 157, 143, 0.2) 0%, transparent 70%);
  border: 2px solid rgba(42, 157, 143, 0.3);
  animation: pulse 4s ease-in-out infinite;
  position: relative;
}

.resonance-circle::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60%;
  height: 60%;
  border-radius: 50%;
  background: rgba(42, 157, 143, 0.1);
  animation: pulse 4s ease-in-out infinite 0.5s;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.7;
  }
}

.headline {
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.15em;
}

.subline {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 300;
  margin-bottom: var(--spacing-md);
}

.tagline {
  font-size: 1.1rem;
  font-style: italic;
  opacity: 0.9;
}

/* Essenz Section */
.section-essenz {
  background: linear-gradient(180deg, var(--color-turquoise) 0%, rgba(42, 157, 143, 0.8) 100%);
  color: var(--color-light);
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.philosophy-quote {
  font-size: 1.5rem;
  font-weight: 300;
  font-style: italic;
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  border-left: 3px solid var(--color-yellow);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0 8px 8px 0;
}

.essence-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
}

.glowing-orb {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(233, 196, 106, 0.4), rgba(42, 157, 143, 0.2));
  box-shadow:
    0 0 60px rgba(233, 196, 106, 0.3),
    0 0 120px rgba(233, 196, 106, 0.2),
    inset 0 0 60px rgba(255, 255, 255, 0.1);
  animation: glow 6s ease-in-out infinite;
}

@keyframes glow {
  0%,
  100% {
    transform: scale(1);
    box-shadow:
      0 0 60px rgba(233, 196, 106, 0.3),
      0 0 120px rgba(233, 196, 106, 0.2),
      inset 0 0 60px rgba(255, 255, 255, 0.1);
  }
  50% {
    transform: scale(1.05);
    box-shadow:
      0 0 80px rgba(233, 196, 106, 0.4),
      0 0 140px rgba(233, 196, 106, 0.3),
      inset 0 0 80px rgba(255, 255, 255, 0.15);
  }
}

/* Auftrag Section */
.section-auftrag {
  background: linear-gradient(180deg, var(--color-yellow) 0%, rgba(233, 196, 106, 0.7) 100%);
  color: var(--color-petrol);
}

.section-intro {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 300;
  margin-bottom: var(--spacing-lg);
}

.resonance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.position-card {
  background: rgba(255, 255, 255, 0.6);
  padding: var(--spacing-md);
  border-radius: 16px;
  border: 2px solid rgba(38, 70, 83, 0.1);
  transition: all 0.3s ease;
  cursor: default;
}

.position-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(38, 70, 83, 0.15);
  background: rgba(255, 255, 255, 0.8);
}

.position-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-petrol);
  color: var(--color-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.position-card h3 {
  margin-bottom: var(--spacing-xs);
  color: var(--color-petrol);
}

.position-card p {
  font-style: italic;
  opacity: 0.85;
  font-size: 0.95rem;
}

/* Arbeitsweise Section */
.section-arbeitsweise {
  background: linear-gradient(180deg, var(--color-red) 0%, rgba(231, 111, 81, 0.8) 100%);
  color: var(--color-light);
}

.concepts-network {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  min-height: 300px;
}

.concept-node {
  background: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-md);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border: 2px solid rgba(255, 255, 255, 0.3);
  transition: all 0.4s ease;
}

.concept-node:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

.concept-text {
  font-size: 1.2rem;
  font-weight: 300;
  text-align: center;
  letter-spacing: 0.05em;
}

.connection-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.connection-path {
  stroke: rgba(255, 255, 255, 0.2);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 5, 5;
  animation: dash 20s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -1000;
  }
}

.principles-text {
  max-width: 800px;
  margin: 0 auto;
}

.principles-text p {
  margin-bottom: var(--spacing-md);
}

.principles-text strong {
  font-weight: 500;
  display: block;
  margin-bottom: var(--spacing-xs);
}

/* Vision Section */
.section-vision {
  background: linear-gradient(180deg, var(--color-light) 0%, var(--color-white) 100%);
  color: var(--color-petrol);
}

.vision-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.vision-quote {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  font-style: italic;
  margin-bottom: var(--spacing-lg);
  line-height: 1.4;
  color: var(--color-petrol);
}

.vision-text {
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.vision-text p {
  margin: 0 auto var(--spacing-md);
}

.vision-summary {
  background: rgba(42, 157, 143, 0.1);
  padding: var(--spacing-md);
  border-radius: 16px;
  border-left: 4px solid var(--color-turquoise);
  text-align: left;
  margin-top: var(--spacing-lg);
}

.vision-summary strong {
  font-weight: 500;
}

/* Scroll Indicator */
.scroll-indicator {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.scroll-link {
  display: inline-block;
  color: inherit;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid currentColor;
  border-radius: 24px;
  opacity: 0.7;
  transition: all 0.3s ease;
}

.scroll-link:hover {
  opacity: 1;
  transform: translateY(2px);
}

/* Footer */
.site-footer {
  margin-top: var(--spacing-xxl);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  text-align: center;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  opacity: 0.6;
  margin-bottom: var(--spacing-md);
}

.footer-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.footer-wordmark {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: lowercase;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  opacity: 0.7;
}

.footer-links a {
  color: var(--color-petrol);
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.footer-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-separator {
  opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --font-size-base: 16px;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 5rem;
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  .two-column {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .visual-column {
    order: -1;
  }

  .resonance-grid {
    grid-template-columns: 1fr;
  }

  .concepts-network {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .glowing-orb {
    width: 180px;
    height: 180px;
  }

  .resonance-circle {
    width: 150px;
    height: 150px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .philosophy-quote {
    font-size: 1.2rem;
    padding: var(--spacing-sm);
  }

  .vision-quote {
    font-size: 1.5rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Print Styles */
@media print {
  .scroll-indicator,
  .site-footer {
    display: none;
  }

  .section {
    page-break-inside: avoid;
    min-height: auto;
  }
}