/* =========================================================
   MFD — Motorfreunde Dreiland | Design System
   Palette: Schwarz + Grün, edel & hochwertig
   ========================================================= */

/* --- Google Fonts (Development) ---
   For GDPR-compliant production: download WOFF2 and self-host in /assets/fonts/
   Then remove this @import and use the @font-face block below.
   ----------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@600;800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

/* --- Self-hosted @font-face (activate for production) ---
@font-face { font-family: 'Barlow Condensed'; src: url('../fonts/barlow-condensed-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Barlow Condensed'; src: url('../fonts/barlow-condensed-800.woff2') format('woff2'); font-weight: 800; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('../fonts/inter-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('../fonts/jetbrains-mono-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
*/

/* =========================================================
   CSS Custom Properties
   ========================================================= */
:root {
  /* Colors */
  --c-bg-deep:      #0A0D0B;
  --c-bg-card:      #131A15;
  --c-bg-surface:   #1C261E;
  --c-border:       #253028;
  --c-green:        #4CAF82;
  --c-green-dim:    #2E7A55;
  --c-green-glow:   rgba(76, 175, 130, 0.12);
  --c-green-glow2:  rgba(76, 175, 130, 0.06);
  --c-text-primary: #F0EDE8;
  --c-text-second:  #8A9A8E;
  --c-text-muted:   #4A5A4E;
  --c-danger:       #C0392B;
  --c-success:      #4CAF82;
  --c-white:        #FFFFFF;

  /* Typography */
  --ff-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --ff-body:    'Inter', system-ui, sans-serif;
  --ff-mono:    'JetBrains Mono', 'Courier New', monospace;

  --fs-display: clamp(3rem, 8vw, 7rem);
  --fs-h1:      clamp(2rem, 4vw, 3.5rem);
  --fs-h2:      clamp(1.5rem, 3vw, 2.5rem);
  --fs-h3:      1.35rem;
  --fs-h4:      1.1rem;
  --fs-body:    1rem;
  --fs-small:   0.875rem;
  --fs-xs:      0.75rem;
  --fs-mono:    0.9rem;

  /* Spacing */
  --sp-xs:  0.25rem;
  --sp-sm:  0.5rem;
  --sp-md:  1rem;
  --sp-lg:  1.5rem;
  --sp-xl:  2.5rem;
  --sp-2xl: 4rem;
  --sp-3xl: 6rem;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-green: 0 8px 32px rgba(76,175,130,0.15);
  --shadow-green-strong: 0 0 40px rgba(76,175,130,0.25);

  /* Transitions */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:    150ms;
  --dur-base:    300ms;
  --dur-slow:    500ms;

  /* Layout */
  --max-w: 1280px;
  --nav-h: 72px;
}

/* =========================================================
   Reset
   ========================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--c-bg-deep);
  color: var(--c-text-primary);
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font: inherit; background: none; border: none; }
input, textarea, select { font: inherit; }
table { border-collapse: collapse; }

/* =========================================================
   Typography
   ========================================================= */
h1, h2, h3, h4, h5 {
  font-family: var(--ff-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--c-text-primary);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); font-weight: 600; }

p { line-height: 1.7; color: var(--c-text-second); }
strong { color: var(--c-text-primary); font-weight: 600; }
code, pre { font-family: var(--ff-mono); font-size: var(--fs-mono); }

.text-green  { color: var(--c-green); }
.text-muted  { color: var(--c-text-muted); }
.text-center { text-align: center; }
.uppercase   { text-transform: uppercase; letter-spacing: 0.08em; }

/* =========================================================
   Layout
   ========================================================= */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-xl);
}
@media (max-width: 768px) { .container { padding: 0 var(--sp-lg); } }

.section { padding: var(--sp-3xl) 0; }
.section--sm { padding: var(--sp-2xl) 0; }

.grid { display: grid; gap: var(--sp-xl); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.flex      { display: flex; }
.flex-col  { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm    { gap: var(--sp-sm); }
.gap-md    { gap: var(--sp-md); }
.gap-lg    { gap: var(--sp-lg); }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--dur-base) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-green);
  color: var(--c-bg-deep);
  box-shadow: 0 4px 20px rgba(76,175,130,0.3);
}
.btn-primary:hover {
  background: #5DC494;
  box-shadow: 0 6px 30px rgba(76,175,130,0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--c-green);
  color: var(--c-green);
}
.btn-outline:hover {
  background: var(--c-green-glow);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text-second);
}
.btn-ghost:hover { color: var(--c-text-primary); }

/* =========================================================
   Cards
   ========================================================= */
.card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-green);
  border-color: var(--c-green-dim);
}

/* =========================================================
   Section Headers
   ========================================================= */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-green);
  margin-bottom: var(--sp-md);
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-green);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: var(--fs-h2);
  margin-bottom: var(--sp-md);
}

.section-desc {
  font-size: 1.05rem;
  max-width: 600px;
  line-height: 1.75;
}

/* =========================================================
   Dividers & Decorations
   ========================================================= */
.divider {
  width: 100%;
  height: 1px;
  background: var(--c-border);
  margin: var(--sp-xl) 0;
}

.dot-sep::after {
  content: ' · ';
  color: var(--c-text-muted);
}

/* =========================================================
   Badges & Tags
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.badge-green {
  background: rgba(76,175,130,0.15);
  color: var(--c-green);
  border: 1px solid rgba(76,175,130,0.3);
}
.badge-muted {
  background: var(--c-bg-surface);
  color: var(--c-text-second);
  border: 1px solid var(--c-border);
}

/* =========================================================
   Form Elements
   ========================================================= */
.form-group { display: flex; flex-direction: column; gap: var(--sp-sm); }

.form-label {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-second);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--c-bg-surface);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  color: var(--c-text-primary);
  font-size: var(--fs-body);
  transition: border-color var(--dur-base) ease,
              box-shadow var(--dur-base) ease;
  outline: none;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--c-green);
  box-shadow: 0 0 0 3px rgba(76,175,130,0.15);
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--c-text-muted); }

.form-textarea { resize: vertical; min-height: 120px; }

.form-error {
  font-size: var(--fs-small);
  color: var(--c-danger);
}

/* =========================================================
   Scroll Reveal Animations
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   Page Transitions
   ========================================================= */
body.page-enter {
  opacity: 0;
  transform: translateY(10px);
}
body {
  transition: opacity 250ms var(--ease-out), transform 250ms var(--ease-out);
}
body.page-exit {
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
}

/* =========================================================
   Toast Notification
   ========================================================= */
.toast {
  position: fixed;
  bottom: var(--sp-xl);
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--c-bg-card);
  border: 1px solid var(--c-green);
  color: var(--c-green);
  padding: 0.875rem 1.5rem;
  border-radius: var(--radius-lg);
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-green-strong);
  z-index: 99999;
  white-space: nowrap;
  transition: transform 400ms var(--ease-out);
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* =========================================================
   Overlay base
   ========================================================= */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,13,11,0.92);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
  backdrop-filter: blur(4px);
}
.overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* =========================================================
   Scrollbar
   ========================================================= */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--c-bg-deep); }
::-webkit-scrollbar-thumb { background: var(--c-bg-surface); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--c-green-dim); }

/* =========================================================
   Selection
   ========================================================= */
::selection { background: rgba(76,175,130,0.3); color: var(--c-text-primary); }

/* =========================================================
   Accessibility
   ========================================================= */
.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-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* =========================================================
   Utilities
   ========================================================= */
.hidden  { display: none !important; }
.mt-sm   { margin-top: var(--sp-sm); }
.mt-md   { margin-top: var(--sp-md); }
.mt-lg   { margin-top: var(--sp-lg); }
.mt-xl   { margin-top: var(--sp-xl); }
.mb-sm   { margin-bottom: var(--sp-sm); }
.mb-md   { margin-bottom: var(--sp-md); }
.mb-lg   { margin-bottom: var(--sp-lg); }
.mb-xl   { margin-bottom: var(--sp-xl); }

/* Glow effect for special elements */
.glow-green {
  box-shadow: var(--shadow-green-strong);
  border-color: var(--c-green) !important;
}