/* ============================================================================
   bytebrise green · Solar-Honest Brand-System
   Stand: 2026-05-27
   ============================================================================
   Brand-Konzept: handwerklich, ehrlich, warm, erdig
   ========================================================================== */

:root {
  /* === Brand-Palette (Solar-Honest) === */
  --color-earth: #5a3a2a;
  --color-earth-deep: #3d2719;
  --color-moss: #7a9b6e;
  --color-moss-light: #a4be96;
  --color-paper: #fbf6ea;
  --color-paper-warm: #f3ecd9;
  --color-ink: #2a1f17;
  --color-ink-soft: rgba(42, 31, 23, 0.78);
  --color-ink-mute: rgba(42, 31, 23, 0.55);
  --color-line: rgba(90, 58, 42, 0.18);
  --color-line-soft: rgba(90, 58, 42, 0.10);

  /* === State-Farben === */
  --color-success: #5a7d4f;
  --color-warning: #c89043;
  --color-error: #a14a3a;

  /* === Typografie === */
  --font-display: 'Crimson Pro', 'Crimson Text', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', 'Geist', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Menlo', 'Geist Mono', monospace;
  --font-brand: 'Dystopian', Georgia, serif;  /* bytebrise-Mutter-Brand */

  /* === Type-Scale (Fluid, Modular 1.25) === */
  --fs-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8rem);
  --fs-sm: clamp(0.85rem, 0.8rem + 0.25vw, 0.95rem);
  --fs-base: clamp(1rem, 0.95rem + 0.3vw, 1.1rem);
  --fs-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.35rem);
  --fs-xl: clamp(1.4rem, 1.2rem + 1vw, 1.8rem);
  --fs-2xl: clamp(1.8rem, 1.4rem + 2vw, 2.6rem);
  --fs-3xl: clamp(2.3rem, 1.8rem + 2.5vw, 3.6rem);
  --fs-4xl: clamp(3rem, 2.2rem + 4vw, 5rem);

  /* === Spacing === */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* === Layout === */
  --container-max: 1180px;
  --container-padding: clamp(1.2rem, 4vw, 3rem);

  /* === Radius === */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* === Transitions === */
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-short: 180ms;
  --duration-base: 280ms;
  --duration-long: 480ms;
}

/* ============================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-earth); text-decoration: none; transition: color var(--duration-short) var(--ease-soft); }
a:hover { color: var(--color-earth-deep); }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

/* ============================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}
h1 { font-size: var(--fs-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
em, .italic { font-style: italic; color: var(--color-moss); }
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-earth);
}
strong { font-weight: 600; color: var(--color-ink); }
.lead { font-size: var(--fs-lg); line-height: 1.55; color: var(--color-ink-soft); max-width: 60ch; }
p { color: var(--color-ink-soft); max-width: 65ch; }
code, kbd { font-family: var(--font-mono); font-size: 0.9em; background: var(--color-paper-warm); padding: 0.1em 0.35em; border-radius: var(--radius-sm); color: var(--color-earth-deep); }

/* ============================================================================
   Container & Sections
   ========================================================================== */
.container { max-width: var(--container-max); margin: 0 auto; padding-inline: var(--container-padding); }
section { padding-block: var(--space-9); }
section + section { border-top: 1px solid var(--color-line-soft); }

/* ============================================================================
   Header / Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 246, 234, 0.92);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-line-soft);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding-block: var(--space-4); }
.brand-mark { display: flex; align-items: center; gap: var(--space-3); }
.brand-mark img { width: 36px; height: 36px; }
/* Brand-Mark: "bytebrise" in Original-Dystopian, "green" im Solar-Honest-Italic */
.brand-text { font-family: var(--font-brand); font-weight: 700; font-size: var(--fs-lg); color: var(--color-earth); letter-spacing: -0.01em; }
.brand-text em { font-family: var(--font-display); color: var(--color-moss); font-style: italic; font-weight: 600; }
.nav-menu { display: flex; gap: var(--space-6); align-items: center; }
.nav-menu a { font-size: var(--fs-sm); color: var(--color-ink-soft); font-weight: 500; }
.nav-menu a:hover { color: var(--color-earth); }
.nav-menu .lang { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.1em; color: var(--color-ink-mute); border-left: 1px solid var(--color-line); padding-left: var(--space-4); }
@media (max-width: 720px) { .nav-menu { gap: var(--space-4); } .nav-menu a:not(.btn):not(.lang) { display: none; } }

/* ============================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.75em 1.5em;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  transition: all var(--duration-short) var(--ease-soft);
  cursor: pointer;
  border: 1.5px solid transparent;
  text-decoration: none;
}
.btn-primary { background: var(--color-earth); color: var(--color-paper); }
.btn-primary:hover { background: var(--color-earth-deep); color: var(--color-paper); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--color-earth); border-color: var(--color-earth); }
.btn-ghost:hover { background: var(--color-earth); color: var(--color-paper); }
.btn-arrow { transition: transform var(--duration-short) var(--ease-soft); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ============================================================================
   Hero
   ========================================================================== */
.hero {
  padding-block: var(--space-10) var(--space-9);
  position: relative;
  overflow: hidden;
}
.hero .container { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-8); align-items: center; }
@media (max-width: 900px) { .hero .container { grid-template-columns: 1fr; } }
.hero-text .eyebrow { margin-bottom: var(--space-5); }
.hero-text h1 { margin-bottom: var(--space-5); }
.hero-text h1 em { font-style: italic; color: var(--color-moss); }
.hero-text .lead { margin-bottom: var(--space-6); }
.hero-ctas { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-visual img { width: 100%; max-width: 400px; border-radius: var(--radius-md); }

/* ============================================================================
   Metric-Boxes
   ========================================================================== */
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); margin-top: var(--space-7); }
@media (max-width: 900px) { .metrics-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .metrics-grid { grid-template-columns: 1fr; } }
.metric {
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-moss);
  padding: var(--space-5);
  border-radius: var(--radius-sm);
}
.metric-num {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 600;
  color: var(--color-earth);
  line-height: 1;
}
.metric-num em { color: var(--color-moss); font-style: italic; }
.metric-label { font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-ink-mute); margin-top: var(--space-3); font-weight: 500; }
.metric-desc { font-size: var(--fs-sm); color: var(--color-ink-soft); margin-top: var(--space-2); line-height: 1.5; }

/* ============================================================================
   Section-Header
   ========================================================================== */
.section-header { text-align: center; max-width: 56ch; margin: 0 auto var(--space-8); }
.section-header .eyebrow { margin-bottom: var(--space-4); display: inline-block; }
.section-header h2 { margin-bottom: var(--space-4); }
.section-header p { margin-inline: auto; }

/* ============================================================================
   Hebel-Cards (6 Hebel-Pattern)
   ========================================================================== */
.levers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
@media (max-width: 900px) { .levers-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .levers-grid { grid-template-columns: 1fr; } }
.lever {
  background: var(--color-paper-warm);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-earth);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform var(--duration-base) var(--ease-soft);
}
.lever:hover { transform: translateY(-4px); }
.lever-num { font-family: var(--font-display); font-size: var(--fs-lg); color: var(--color-moss); font-style: italic; font-weight: 600; }
.lever h3 { font-size: var(--fs-lg); }
.lever p { font-size: var(--fs-sm); }

/* ============================================================================
   CTA-Banner
   ========================================================================== */
.cta-banner {
  background: var(--color-earth);
  color: var(--color-paper);
  padding-block: var(--space-9);
  text-align: center;
}
.cta-banner h2, .cta-banner h3 { color: var(--color-paper); }
.cta-banner h2 em { color: var(--color-moss-light); font-style: italic; }
.cta-banner p { color: rgba(251, 246, 234, 0.78); margin-inline: auto; margin-bottom: var(--space-6); max-width: 56ch; }
.cta-banner .btn-primary { background: var(--color-paper); color: var(--color-earth); }
.cta-banner .btn-primary:hover { background: var(--color-paper-warm); color: var(--color-earth-deep); }

/* ============================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-earth-deep);
  color: var(--color-paper);
  padding-block: var(--space-8) var(--space-6);
}
.site-footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-6); }
@media (max-width: 720px) { .site-footer .container { grid-template-columns: 1fr 1fr; } }
.site-footer .brand-text { color: var(--color-paper); }
.site-footer .brand-text em { color: var(--color-moss-light); }
.site-footer h4 { color: var(--color-paper); font-size: var(--fs-sm); font-family: var(--font-body); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: var(--space-4); font-weight: 600; }
.site-footer ul li { margin-bottom: var(--space-2); font-size: var(--fs-sm); }
.site-footer a { color: rgba(251, 246, 234, 0.72); }
.site-footer a:hover { color: var(--color-moss-light); }
.footer-meta {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(251, 246, 234, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--fs-xs);
  color: rgba(251, 246, 234, 0.5);
  letter-spacing: 0.04em;
}

/* ============================================================================
   Article (Methodik / Blog / Legal)
   ========================================================================== */
.article { max-width: 64ch; margin-inline: auto; }
.article h2 { margin-top: var(--space-7); margin-bottom: var(--space-4); }
.article h3 { margin-top: var(--space-6); margin-bottom: var(--space-3); font-size: var(--fs-xl); }
.article p { margin-bottom: var(--space-4); }
.article ul, .article ol { margin-bottom: var(--space-5); padding-left: var(--space-5); }
.article ul li, .article ol li { margin-bottom: var(--space-3); padding-left: var(--space-3); position: relative; color: var(--color-ink-soft); }
.article ul li::before { content: '·'; position: absolute; left: 0; color: var(--color-moss); font-weight: 700; font-size: 1.4em; line-height: 1; top: -0.1em; }
.article ol { counter-reset: art; }
.article ol li::before { content: counter(art); counter-increment: art; position: absolute; left: -1.2em; color: var(--color-moss); font-family: var(--font-display); font-style: italic; font-weight: 600; }
.article blockquote { border-left: 3px solid var(--color-moss); padding: var(--space-3) var(--space-5); margin: var(--space-5) 0; font-style: italic; color: var(--color-ink-soft); background: var(--color-paper-warm); }
.article a { text-decoration: underline; text-decoration-color: var(--color-moss); text-underline-offset: 3px; }
.article .source { font-size: var(--fs-xs); color: var(--color-ink-mute); margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--color-line-soft); }

/* ============================================================================
   Forms (Audit-Tool, Kontakt)
   ========================================================================== */
.form { max-width: 56ch; margin-inline: auto; display: grid; gap: var(--space-4); }
.form-row { display: grid; gap: var(--space-2); }
.form-row label { font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; color: var(--color-earth); }
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  padding: 0.75em 1em;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-ink);
  background: var(--color-paper-warm);
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: border-color var(--duration-short) var(--ease-soft), background var(--duration-short) var(--ease-soft);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none;
  border-color: var(--color-earth);
  background: var(--color-paper);
}
.form-row textarea { resize: vertical; min-height: 6em; }
.form-row .hint { font-size: var(--fs-xs); color: var(--color-ink-mute); margin-top: 0.2em; }
.form-row.row-check { display: flex; gap: var(--space-3); align-items: flex-start; }
.form-row.row-check input { width: auto; }
.form-row.row-check label { text-transform: none; letter-spacing: 0; font-weight: 400; font-size: var(--fs-sm); color: var(--color-ink-soft); line-height: 1.5; }
.form-submit { margin-top: var(--space-3); display: flex; gap: var(--space-4); align-items: center; flex-wrap: wrap; }
.form-status { font-size: var(--fs-sm); }
.form-status.success { color: var(--color-success); }
.form-status.error { color: var(--color-error); }

/* === Audit-Result-Box === */
.audit-result {
  margin-top: var(--space-7);
  padding: var(--space-6);
  background: var(--color-paper-warm);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-moss);
}
.audit-result.hidden { display: none; }
.audit-score-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin-bottom: var(--space-5); }
@media (max-width: 600px) { .audit-score-row { grid-template-columns: 1fr; } }
.audit-score { text-align: center; }
.audit-score .num { font-family: var(--font-display); font-size: var(--fs-2xl); font-weight: 600; color: var(--color-earth); line-height: 1; }
.audit-score .num em { color: var(--color-moss); font-style: italic; }
.audit-score .lbl { font-size: var(--fs-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-ink-mute); margin-top: var(--space-2); }
.audit-recos { display: grid; gap: var(--space-3); }
.audit-reco { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3); font-size: var(--fs-sm); }
.audit-reco-icon { color: var(--color-moss); font-family: var(--font-display); font-style: italic; font-weight: 600; }

/* ============================================================================
   Utilities
   ========================================================================== */
.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; }
.text-center { text-align: center; }

/* === Reveal-Animation on Scroll === */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--duration-long) var(--ease-soft), transform var(--duration-long) var(--ease-soft); }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ============================================================================
   Self-hosted Fonts (lokal, DSGVO-konform; LG München I 2022)
   Quelle: Google Fonts → lokal in assets/fonts/
   ========================================================================== */
@font-face {
  font-family: 'Crimson Pro';
  src: url('fonts/CrimsonPro-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Crimson Pro';
  src: url('fonts/CrimsonPro-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Crimson Pro';
  src: url('fonts/CrimsonPro-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: 'Inter';
  src: url('fonts/Inter.var.woff2') format('woff2-variations'),
       url('fonts/Inter.var.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* === Dystopian: bytebrise-Mutter-Brand (für "bytebrise"-Wortmarke) === */
@font-face {
  font-family: 'Dystopian';
  src: url('fonts/Dystopian-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Dystopian';
  src: url('fonts/Dystopian-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}