/* ==========================================================================
   Rootstock Coaching - Premium Design System
   ========================================================================== */

/* --- Variables --- */
:root {
  /* Colors - Matched to Logo (#1b370f) */
  --color-primary: #1b370f; /* Deep Logo Green */
  --color-primary-light: #2c4c1e; /* Lighter Logo Green */
  --color-primary-dark: #0d3806; /* Darkest Logo Green */
  --color-secondary: #A67C52; /* Warm Earthy Brown */
  --color-accent: #C2A281; /* Richer Earthy Brown Accent */
  
  --color-background: #E8D5C4; /* Soft Warm Brown / Sand */
  --color-surface: #F4EBE1; /* Very Light Warm Tint for Cards */
  --color-text-main: #2C2C2C;
  --color-text-muted: #5C5C5C;
  --color-border: #E5E5E5;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Layout */
  --container-width: 1200px;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 8rem;

  /* Aesthetics */
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 32px;
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(88, 116, 104, 0.12); /* Tinted shadow */
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text-main);
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-primary-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--spacing-lg); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: var(--spacing-md); }

p {
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

/* --- Layout Components --- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.section-light {
  background-color: var(--color-surface);
}

.section-tinted {
  background-color: var(--color-accent);
}

/* Glassmorphism Utilities */
.glass-panel {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-md);
  border-radius: var(--border-radius-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.9);
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--spacing-md) 0;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-sm);
}

/* Base states for links (default: dark for light pages) */
.nav-links a {
  font-weight: 500;
  color: var(--color-text-main);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-normal);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal), background-color var(--transition-normal);
}

/* Theme: Dark Background (e.g. Hero Image on Startseite) */
.site-header.theme-dark-bg:not(.scrolled) .nav-links a {
  color: #ffffff;
}

.site-header.theme-dark-bg:not(.scrolled) .nav-links a::after {
  background-color: #ffffff;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}



.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 500;
  border-radius: 50px; /* Pill shape */
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(88, 116, 104, 0.3);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(88, 116, 104, 0.4);
  color: #fff;
}

/* --- Hero Section --- */
.hero {
  padding: calc(var(--spacing-xxl) + 80px) 0 var(--spacing-xxl);
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-background) 100%);
  position: relative;
  overflow: hidden;
}

/* Subtle background decoration */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(166, 124, 82, 0.15) 0%, rgba(255,255,255,0) 70%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-tagline {
  display: inline-block;
  font-weight: 600;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}

.fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  opacity: 0;
  transform: translateY(30px);
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

/* --- AI Apps Grid (Dynamic Content) --- */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.app-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.app-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

/* Card hover glow */
.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.app-card:hover::before {
  transform: scaleX(1);
}

.app-icon {
  width: 60px;
  height: 60px;
  background: var(--color-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 1.5rem;
  color: var(--color-primary);
}

.app-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.app-card a::after {
  content: "→";
  display: inline-block;
  margin-left: 8px;
  transition: transform var(--transition-fast);
}

.app-card:hover a::after {
  transform: translateX(4px);
}

/* --- Internal Content Pages --- */
.page-header {
  padding: calc(var(--spacing-xxl) + 80px) 0 var(--spacing-xl);
  background-color: var(--color-accent);
  text-align: center;
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xxl) 0;
}

.content-wrapper h2 {
  margin-top: var(--spacing-xl);
}

.content-wrapper ul, .content-wrapper ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
  color: var(--color-text-muted);
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: #fff;
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-col h4 {
  color: #fff;
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
}

/* --- Animations --- */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Mobile Menu --- */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-main);
  position: relative;
  transition: background 0.2s;
}

.hamburger::before, .hamburger::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--color-text-main);
  left: 0;
  transition: all 0.3s;
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }


/* Responsive */
@media (max-width: 768px) {
  .menu-toggle { display: block; }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: transform var(--transition-normal);
    opacity: 0;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }
  
  .menu-toggle.active .hamburger { background: transparent; }
  .menu-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
  .menu-toggle.active .hamburger::after { transform: rotate(-45deg); bottom: 0; }
}

/* Soften logos globally */
.logo img { opacity: 0.85; mix-blend-mode: multiply; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1)); border-radius: 8px; }
.footer-logo { filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5)); opacity: 0.9; }