/*
 * Apple Mac Pro Design System & UI Style
 * Hochschule Niederrhein - InventorLab - Prof. Dr.-Ing. Dominic Deutges
 * Lokaler System-Font-Stack (Kein externes Google Fonts, 100% Abmahnsicher)
 */

:root {
  --bg-primary: #000000;
  --bg-surface: #111113;
  --bg-elevated: #1a1a1c;
  --bg-hover: #242426;
  
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --text-muted: #515154;
  
  --accent-blue: #2997ff;
  --accent-blue-hover: #4ea8ff;
  --accent-gradient: linear-gradient(135deg, #2997ff 0%, #0071e3 50%, #5e5ce6 100%);
  --accent-glow: rgba(41, 151, 255, 0.25);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-color: rgba(255, 255, 255, 0.14);
  --border-hover: rgba(41, 151, 255, 0.6);
  
  --glass-bg: rgba(17, 17, 19, 0.78);
  --glass-border: rgba(255, 255, 255, 0.1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background Ambient Glow */
.ambient-glow {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.15) 0%, rgba(94, 92, 230, 0.08) 50%, rgba(0,0,0,0) 80%);
  z-index: 0;
  pointer-events: none;
  filter: blur(80px);
}

/* Glass Navbar */
.pro-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand-logo {
  width: 38px;
  height: 38px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.nav-logo {
  height: 38px;
  max-width: 140px;
  object-fit: contain;
  background: #ffffff;
  padding: 3px 6px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
}

.nav-logo:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.nav-brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.nav-brand-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Pro Buttons */
.btn-pro {
  background: var(--accent-blue);
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(41, 151, 255, 0.3);
}

.btn-pro:hover {
  background: var(--accent-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(41, 151, 255, 0.45);
}

.btn-pro-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.btn-pro-outline:hover {
  border-color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

/* Main Container */
.main-container {
  max-width: 1380px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  position: relative;
  z-index: 1;
}

/* Hero Section */
.hero-section {
  text-align: center;
  padding: 60px 20px 80px;
  max-width: 900px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(41, 151, 255, 0.12);
  border: 1px solid rgba(41, 151, 255, 0.3);
  color: var(--accent-blue);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.08;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #a1a1a6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

/* Chapter Navigation Tabs */
.chapter-tabs {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
  padding: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 40px;
  max-width: max-content;
  margin-left: auto;
  margin-right: auto;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 10px;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  border: 1px solid var(--border-color);
}

.tab-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

/* Grid Layouts */
.pro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

/* Symmetrische Anordnung der 4 Module auf der Loginseite (je 2 nebeneinander) */
.login-modules-grid {
  grid-template-columns: repeat(2, 1fr);
  max-width: 1040px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 850px) {
  .login-modules-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.pro-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  position: relative;
  overflow: hidden;
}

.pro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-fast);
}

.pro-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 20px var(--accent-glow);
  background: var(--bg-elevated);
}

.pro-card:hover::before {
  opacity: 1;
}

.card-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(41, 151, 255, 0.1);
  border: 1px solid rgba(41, 151, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent-blue);
  font-size: 24px;
}

.card-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.card-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  flex-grow: 0;
}

.card-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.card-tag {
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
}

/* Script Item List inside cards or sections */
.script-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.script-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.script-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent-blue);
  transform: translateX(4px);
}

.script-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.script-icon {
  color: #ff3b30; /* PDF red / Pro accent */
  font-size: 18px;
}

.script-name {
  font-size: 14px;
  font-weight: 500;
}

.script-badge {
  font-size: 11px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.08);
  padding: 2px 8px;
  border-radius: 6px;
}

/* Tool Interactive Button */
.tool-launch-btn {
  background: linear-gradient(90deg, #1a1a1c 0%, #242426 100%);
  border: 1px solid var(--accent-blue);
  color: var(--accent-blue);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
  margin-top: 10px;
}

.tool-launch-btn:hover {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.pro-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 95%;
  max-width: 1440px;
  height: 92vh;
  max-height: 94vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.8);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .pro-modal {
  transform: scale(1);
}

.modal-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-elevated);
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close {
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.modal-body {
  padding: 0;
  flex-grow: 1;
  overflow: hidden;
  height: 100%;
  background: #000;
}

.tool-iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Login Form Specifics */
.login-card {
  max-width: 440px;
  margin: 40px auto;
  padding: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 50px rgba(0,0,0,0.7);
  backdrop-filter: blur(30px);
}

.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(0,0,0,0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* DSGVO Notice */
.dsgvo-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-top: 24px;
  border: 1px solid var(--border-subtle);
  line-height: 1.4;
}

/* Footer */
.pro-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 80px;
}

/* Search Bar */
.search-wrapper {
  max-width: 600px;
  margin: 0 auto 40px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 20px var(--accent-glow);
  background: var(--bg-elevated);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
  .pro-navbar {
    padding: 12px 16px;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .chapter-tabs {
    border-radius: 20px;
  }
  .pro-card {
    padding: 24px;
  }
}