/* ==========================================================================
   PlantStack Showcase Website Stylesheet
   Design Philosophy: Botanical Modernism v2.0
   100% Self-Hosted & DSGVO Compliant (No external CDNs or Google Fonts)
   ========================================================================== */

/* 1. Local Self-Hosted Typography */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url('../fonts/PlusJakartaSans-Variable.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* 2. Design Tokens & CSS Variables */
:root {
  /* Light Mode (Botanical Naturalist) */
  --bg-canvas: #F8F9F6;
  --bg-surface: #FFFFFF;
  --bg-surface-subtle: #F1F3EE;
  --bg-surface-hover: #E8ECE3;
  --bg-elevated: #FFFFFF;

  --border-hairline: rgba(25, 36, 28, 0.08);
  --border-subtle: rgba(25, 36, 28, 0.12);
  --border-strong: rgba(25, 36, 28, 0.22);

  --text-primary: #19241C;
  --text-secondary: #4D5E52;
  --text-muted: #738478;
  --text-on-brand: #FFFFFF;

  /* Brand Colors */
  --brand: #1E5135;
  --brand-primary: #1E5135;
  --brand-hover: #163D27;
  --brand-light: #E8F0EA;
  --brand-subtle: rgba(30, 81, 53, 0.08);
  --brand-border: #C8D9CD;
  --brand-glow: rgba(30, 81, 53, 0.18);

  /* Functional Care Tokens */
  --care-water: #0D638F;
  --care-water-bg: #EEF7FC;
  --care-fertilizer: #995B00;
  --care-fertilizer-bg: #FEF7EC;
  --care-bug: #7E22CE;
  --care-bug-bg: #FAF5FF;
  --care-fungus: #0F766E;
  --care-fungus-bg: #F0FDFA;
  --care-frost: #0284C7;
  --care-frost-bg: #F0F9FF;
  --care-sun: #A16207;
  --care-sun-bg: #FEF9C3;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(25, 36, 28, 0.05);
  --shadow-md: 0 4px 16px -2px rgba(25, 36, 28, 0.07), 0 2px 6px -1px rgba(25, 36, 28, 0.04);
  --shadow-lg: 0 12px 32px -4px rgba(25, 36, 28, 0.09), 0 4px 12px -2px rgba(25, 36, 28, 0.05);
  --shadow-glow: 0 0 40px -8px var(--brand-glow);

  --header-bg: rgba(248, 249, 246, 0.85);
  --code-bg: #141C16;
  --code-text: #EEF3EF;
}

:root.dark,
.dark {
  /* Dark Mode (Botanical OLED Modernism) */
  --bg-canvas: #0E1310;
  --bg-surface: #151C17;
  --bg-surface-subtle: #1C2620;
  --bg-surface-hover: #243029;
  --bg-elevated: #18221B;

  --border-hairline: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.20);

  --text-primary: #EEF3EF;
  --text-secondary: #A3B5A7;
  --text-muted: #6E8073;
  --text-on-brand: #0E1310;

  /* Brand Colors */
  --brand: #34D37A;
  --brand-primary: #34D37A;
  --brand-hover: #2EC470;
  --brand-light: rgba(52, 211, 122, 0.14);
  --brand-subtle: rgba(52, 211, 122, 0.12);
  --brand-border: rgba(52, 211, 122, 0.28);
  --brand-glow: rgba(52, 211, 122, 0.22);

  /* Functional Care Tokens in Dark */
  --care-water: #38BDF8;
  --care-water-bg: rgba(56, 189, 248, 0.14);
  --care-fertilizer: #FBBF24;
  --care-fertilizer-bg: rgba(251, 191, 36, 0.14);
  --care-bug: #C084FC;
  --care-bug-bg: rgba(192, 132, 252, 0.14);
  --care-fungus: #2DD4BF;
  --care-fungus-bg: rgba(45, 212, 191, 0.14);
  --care-frost: #22D3EE;
  --care-frost-bg: rgba(34, 211, 238, 0.14);
  --care-sun: #FACC15;
  --care-sun-bg: rgba(250, 204, 21, 0.14);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 20px -2px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 40px -4px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 50px -6px rgba(52, 211, 122, 0.25);

  --header-bg: rgba(14, 19, 16, 0.85);
  --code-bg: #090D0B;
  --code-text: #EEF3EF;
}

/* 3. Base & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s cubic-bezier(0.16, 1, 0.3, 1), color 0.25s ease;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* 4. Language Visibility Control (Zero Flash, Pure CSS) */
html[lang="de"] .lang-en { display: none !important; }
html[lang="en"] .lang-de { display: none !important; }

/* 5. Layout Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* 6. Navigation Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-hairline);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 1.5rem;
  flex-wrap: nowrap;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: opacity 0.2s ease;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand-link:hover {
  opacity: 0.9;
}

.brand-logo-img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.version-pill {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  background-color: var(--brand-subtle);
  color: var(--brand);
  border: 1px solid var(--brand-border);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--brand);
}

.mobile-nav-github {
  display: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Control Buttons (Lang, Theme, GitHub) */
.ctrl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 8px;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.ctrl-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.ctrl-btn-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 8px;
}

.btn-github {
  background-color: var(--text-primary);
  color: var(--bg-canvas);
  border: 1px solid transparent;
}

.btn-github:hover {
  background-color: var(--brand-hover);
  color: #FFFFFF;
  border-color: transparent;
}

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

/* 7. Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
}

.btn-primary {
  background-color: var(--brand);
  color: var(--text-on-brand);
  box-shadow: 0 2px 8px var(--brand-glow);
}

.btn-primary:hover {
  background-color: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--brand-glow);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

/* 8. Hero Section */
.hero-section {
  position: relative;
  padding-top: 4.5rem;
  padding-bottom: 5rem;
  overflow: hidden;
}

.hero-glow-bg {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 450px;
  background: radial-gradient(circle, var(--brand-glow) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.7;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  background-color: var(--brand-light);
  color: var(--brand);
  border: 1px solid var(--brand-border);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.hero-highlight {
  color: var(--brand);
  background: linear-gradient(135deg, var(--brand) 0%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto 2.25rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

/* Hero Showcase Frame */
.hero-frame-wrapper {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  border-radius: 16px;
  padding: 6px;
  background: linear-gradient(180deg, var(--border-subtle) 0%, var(--border-hairline) 100%);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.hero-frame-inner {
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--bg-surface);
  position: relative;
}

.hero-frame-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background-color: var(--bg-surface-subtle);
  border-bottom: 1px solid var(--border-hairline);
}

.browser-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-strong);
}

.browser-url-pill {
  flex: 1;
  max-width: 320px;
  margin: 0 auto;
  padding: 0.2rem 0.75rem;
  background-color: var(--bg-surface);
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--text-muted);
  text-align: center;
  border: 1px solid var(--border-hairline);
}

.hero-frame-img {
  width: 100%;
  height: auto;
  cursor: zoom-in;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-frame-img:hover {
  transform: scale(1.008);
}

/* 9. Section Styling */
.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
  border-top: 1px solid var(--border-hairline);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 10. Feature Cards (Botanical Anti-Outline) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 14px;
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-subtle);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.icon-water { background-color: var(--care-water-bg); color: var(--care-water); }
.icon-fertilizer { background-color: var(--care-fertilizer-bg); color: var(--care-fertilizer); }
.icon-bug { background-color: var(--care-bug-bg); color: var(--care-bug); }
.icon-fungus { background-color: var(--care-fungus-bg); color: var(--care-fungus); }
.icon-weather { background-color: var(--care-frost-bg); color: var(--care-frost); }
.icon-plantbook { background-color: var(--care-sun-bg); color: var(--care-sun); }
.icon-brand { background-color: var(--brand-light); color: var(--brand); }

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.feature-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 11. Screenshots Gallery & Lightbox Trigger */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.gallery-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.gallery-card:hover .gallery-zoom-overlay {
  opacity: 1;
}

.gallery-thumb-wrapper {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--bg-surface-subtle);
}

.gallery-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-card:hover .gallery-thumb {
  transform: scale(1.04);
}

.gallery-zoom-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.gallery-zoom-icon {
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-caption {
  padding: 1rem 1.25rem;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-hairline);
}

.gallery-caption-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.gallery-caption-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 12. Badges Showcase (Gamification) */
.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.badge-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.badge-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-subtle);
}

.badge-img-wrapper {
  width: 96px;
  height: 96px;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.12));
  transition: transform 0.2s ease;
}

.badge-card:hover .badge-img-wrapper {
  transform: scale(1.08) rotate(2deg);
}

.badge-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.badge-subtitle {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--brand);
  background-color: var(--brand-light);
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
  margin-bottom: 0.6rem;
}

.badge-desc {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* 13. Docker Quickstart & Terminal */
.quickstart-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.terminal-card {
  background-color: var(--code-bg);
  color: var(--code-text);
  border-radius: 14px;
  border: 1px solid var(--border-strong);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background-color: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-family: monospace;
  color: rgba(255, 255, 255, 0.6);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 6px;
  background-color: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background-color: var(--brand);
  border-color: var(--brand);
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.7;
}

.terminal-body pre {
  margin: 0;
}

.code-comment { color: #6E8073; }
.code-keyword { color: #F472B6; }
.code-key { color: #38BDF8; }
.code-val { color: #4ADE80; }

.quickstart-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.note-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 10px;
  padding: 1.25rem;
}

.note-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.note-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 14. Architecture Banner */
.architecture-card {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-subtle) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2.5rem;
  margin-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-md);
}

.arch-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.arch-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background-color: var(--brand-light);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.arch-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.arch-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.arch-bullet {
  color: var(--brand);
  font-size: 1.2rem;
  line-height: 1;
  margin-top: 0.15rem;
}

.arch-item-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.arch-item-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 15. Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  padding: 4rem 0 2.5rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand {
  max-width: 320px;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 0.75rem;
}

.footer-col-title {
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.footer-link:hover {
  color: var(--brand);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-hairline);
  font-size: 0.825rem;
  color: var(--text-muted);
}

.footer-sm4sh-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-sm4sh-badge:hover {
  color: var(--brand);
}

/* 16. Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox-modal.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 1100px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  object-fit: contain;
}

.lightbox-caption {
  margin-top: 1rem;
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
}

.lightbox-close-btn {
  position: absolute;
  top: -45px;
  right: 0;
  background: none;
  border: none;
  color: #FFFFFF;
  font-size: 2rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.lightbox-close-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

/* 17. Legal Pages (Impressum & Datenschutz) */
.legal-wrapper {
  max-width: 800px;
  margin: 3rem auto 6rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 16px;
  padding: 2.5rem 3rem;
  box-shadow: var(--shadow-md);
}

.legal-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-hairline);
}

.legal-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.legal-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.legal-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-content p, .legal-content ul {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

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

.legal-content a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 1.5rem;
  transition: transform 0.15s ease;
}

.legal-back-link:hover {
  transform: translateX(-3px);
}

/* 18. FAQ Accordion Section */
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-md);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color 0.15s ease;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--brand);
  transition: transform 0.2s ease;
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.5rem 1.25rem 1.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  border-top: 1px solid var(--border-hairline);
  margin-top: -0.25rem;
  padding-top: 1rem;
}

/* 19. Obfuscated Email Style */
.email-protected {
  font-family: inherit;
  cursor: pointer;
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* 20. Responsive Breakpoints */
@media (max-width: 900px) {
  .nav-wrapper {
    height: 4rem;
    gap: 0.75rem;
  }

  .desktop-github-btn {
    display: none !important;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background-color: var(--header-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-hairline);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    padding: 1.25rem 1.5rem 1.75rem;
    gap: 0.5rem;
    z-index: 49;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
  }

  .nav-links.active {
    display: flex;
    animation: drawerSlideDown 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-links .nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: 8px;
    color: var(--text-primary);
    background-color: transparent;
    transition: background-color 0.15s ease, color 0.15s ease;
  }

  .nav-links .nav-link:hover,
  .nav-links .nav-link:active {
    background-color: var(--bg-surface-subtle);
    color: var(--brand);
  }

  .mobile-nav-github {
    display: block;
    margin-top: 0.5rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--border-hairline);
  }

  .mobile-github-link {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-actions {
    gap: 0.45rem;
  }

  .ctrl-btn {
    padding: 0.4rem 0.6rem;
    font-size: 0.825rem;
    border-radius: 7px;
  }

  .ctrl-btn-icon {
    width: 36px;
    height: 36px;
  }

  .legal-wrapper {
    padding: 1.75rem;
    margin: 1.5rem auto 4rem;
  }
}

@keyframes drawerSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .nav-wrapper {
    height: 3.75rem;
  }

  .brand-link {
    gap: 0.5rem;
    font-size: 1.15rem;
  }

  .brand-logo-img {
    width: 28px;
    height: 28px;
  }

  .version-pill {
    display: none !important;
  }

  .nav-actions {
    gap: 0.35rem;
  }

  .ctrl-btn {
    padding: 0.35rem 0.5rem;
    font-size: 0.8rem;
  }

  .ctrl-btn-icon {
    width: 34px;
    height: 34px;
  }

  .hero-section {
    padding-top: 3rem;
    padding-bottom: 3.5rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

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

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

  .footer-top {
    flex-direction: column;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}