/* KRUMBIX public website – custom CSS architecture */

:root {
  /* Colors – cool industrial documentation look */
  --color-bg: #f3f6f8;
  --color-bg-elevated: #ffffff;
  --color-bg-muted: #e8eef2;
  --color-bg-deep: #0f2433;
  --color-ink: #12202b;
  --color-ink-soft: #3d5160;
  --color-muted: #5f7383;
  --color-line: #d3dde5;
  --color-line-strong: #b7c5d1;
  --color-accent: #0f6e7c;
  --color-accent-strong: #0a5560;
  --color-accent-soft: #d7eef1;
  --color-warn: #8a5a12;
  --color-warn-bg: #f7eedc;
  --color-ok: #1f6b45;
  --color-ok-bg: #e4f3ea;
  --color-error: #8f1f2d;
  --color-error-bg: #f8e8ea;
  --color-focus: #0f6e7c;

  /* 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: 4.5rem;
  --space-9: 6.5rem;

  /* Typography – expressive system stack (no external fonts) */
  --font-sans: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-display: "Segoe UI Semibold", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;

  --fs-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --fs-sm: clamp(0.875rem, 0.82rem + 0.25vw, 0.9375rem);
  --fs-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --fs-md: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  --fs-lg: clamp(1.25rem, 1.1rem + 0.55vw, 1.65rem);
  --fs-xl: clamp(1.5rem, 1.25rem + 1vw, 2.25rem);
  --fs-2xl: clamp(1.7rem, 1.25rem + 2vw, 3.25rem);
  --lh-tight: 1.18;
  --lh-snug: 1.35;
  --lh-body: 1.65;

  /* Radii & shadows */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px rgba(15, 36, 51, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 36, 51, 0.08);
  --shadow-lg: 0 24px 50px rgba(15, 36, 51, 0.12);

  /* Layout */
  --content-max: 72rem;
  --content-narrow: 42rem;
  --header-h: 4.25rem;
  --gutter: clamp(1rem, 0.6rem + 2vw, 2rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 150ms;
  --dur: 280ms;
  --dur-slow: 500ms;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--color-ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(15, 110, 124, 0.08), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(18, 48, 71, 0.06), transparent 55%),
    linear-gradient(180deg, #eef3f6 0%, var(--color-bg) 28%, var(--color-bg) 100%);
  min-height: 100vh;
  overflow-x: clip;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--space-4);
  inset-block-start: -100%;
  z-index: 1000;
  background: var(--color-bg-deep);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  inset-block-start: var(--space-3);
}

.container {
  width: min(100% - (var(--gutter) * 2), var(--content-max));
  margin-inline: auto;
  max-width: 100%;
}

.hero-grid,
.hero-copy,
.hero-viz,
.page-hero .container,
.section .container {
  min-width: 0;
  max-width: 100%;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(243, 246, 248, 0.94);
  border-bottom: 1px solid rgba(211, 221, 229, 0.9);
}

.nav-backdrop {
  display: none;
}

.header-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1.5rem, 2.5vw, 3rem);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.055em;
  flex-shrink: 0;
  margin-inline-end: 0.75rem;
}

.brand-mark {
  color: var(--color-accent);
  flex-shrink: 0;
  display: inline-flex;
  line-height: 0;
}

.brand-mark-img {
  display: block;
  width: 28px;
  height: 28px;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-width: 0;
  margin-inline-start: auto;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-label {
  display: none;
}

.nav-link {
  text-decoration: none;
  color: var(--color-ink-soft);
  font-size: var(--fs-sm);
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-ink);
  background: rgba(15, 110, 124, 0.08);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: var(--color-ink);
  position: relative;
  transition: transform var(--dur) var(--ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.site-header.is-open .nav-toggle-bars { background: transparent; }
.site-header.is-open .nav-toggle-bars::before { top: 0; transform: rotate(45deg); }
.site-header.is-open .nav-toggle-bars::after { top: 0; transform: rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line-strong);
}

.btn-secondary:hover {
  background: var(--color-bg-elevated);
  color: var(--color-ink);
}

.btn-lg { min-height: 3rem; padding-inline: 1.35rem; }
.btn-nav { margin-inline-start: var(--space-2); }

/* Hero */
.hero {
  position: relative;
  padding-block: clamp(3rem, 2rem + 4vw, 5.5rem) var(--space-8);
  overflow: clip;
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(15, 110, 124, 0.07), transparent 45%),
    repeating-linear-gradient(
      -18deg,
      transparent,
      transparent 18px,
      rgba(18, 48, 71, 0.025) 18px,
      rgba(18, 48, 71, 0.025) 19px
    );
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--space-7);
  align-items: center;
}

.hero-copy {
  min-width: 0;
  max-width: 100%;
}

.brand-signal {
  margin: 0 0 var(--space-3);
  font-size: clamp(1.35rem, 1.1rem + 1.2vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  line-height: 1;
}

.hero h1,
.page-hero h1 {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.hero-lead,
.lede,
.service-card h3,
.page-hero h1 {
  max-width: 100%;
  overflow-wrap: anywhere;
}

h2, h3 {
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.hero-lead {
  margin: 0 0 var(--space-5);
  color: var(--color-ink-soft);
  font-size: var(--fs-md);
  max-width: 38rem;
}

.hero-lead.narrow,
.prose-wide { max-width: var(--content-narrow); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-viz { min-width: 0; }

.flow-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 0.7rem + 1vw, 1.5rem);
  box-shadow: var(--shadow-lg);
  animation: rise 700ms var(--ease) both;
}

.flow-label {
  margin: 0 0 var(--space-4);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 700;
}

.flow-chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.flow-chain li {
  position: relative;
  padding-inline-start: 1.5rem;
}

.flow-chain li:not(:last-child)::after {
  content: "";
  position: absolute;
  inset-inline-start: 0.45rem;
  top: 2.1rem;
  width: 1px;
  height: calc(100% - 0.4rem);
  background: var(--color-line-strong);
}

.flow-chain li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0.2rem;
  top: 0.95rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.flow-chain span {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  font-weight: 600;
}

.flow-chain .is-accent span {
  background: var(--color-accent-soft);
  border-color: rgba(15, 110, 124, 0.25);
  color: var(--color-accent-strong);
}

.flow-chain .is-result span {
  background: var(--color-bg-deep);
  border-color: var(--color-bg-deep);
  color: #fff;
}

.flow-caption {
  margin: var(--space-4) 0 0;
  color: var(--color-muted);
  font-size: var(--fs-sm);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

/* Sections */
.section {
  padding-block: var(--space-8);
}

.section-alt {
  background: rgba(255, 255, 255, 0.55);
  border-block: 1px solid var(--color-line);
}

.section-trust {
  padding-block: var(--space-7) var(--space-8);
}

.section-services {
  background: #e9eef2;
  border-block: 1px solid var(--color-line);
}

.section-demo {
  background: transparent;
}

.section-process {
  background: rgba(255, 255, 255, 0.7);
  border-block: 1px solid var(--color-line);
}

.section-intro {
  margin-bottom: var(--space-6);
  max-width: 44rem;
}

.section-intro.narrow { max-width: 38rem; }

.eyebrow {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.lede {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-soft);
  font-size: var(--fs-md);
}

h2 {
  margin: 0;
  font-size: var(--fs-xl);
  line-height: var(--lh-snug);
  letter-spacing: -0.02em;
}

h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-lg);
  line-height: var(--lh-snug);
}

/* Trust */
.trust-pills {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.trust-pills li {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  font-weight: 600;
  font-size: var(--fs-sm);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.compare-panel {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-bg-elevated);
  min-width: 0;
}

.compare-loose {
  background:
    linear-gradient(160deg, #f7f8f9 0%, #eef1f4 100%);
  border-style: dashed;
}

.compare-ordered {
  border-color: rgba(15, 110, 124, 0.35);
  box-shadow: var(--shadow-md);
  background:
    linear-gradient(180deg, rgba(215, 238, 241, 0.55), #fff 40%);
}

.compare-visual {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.cv-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: #fff;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-ink-soft);
  width: fit-content;
  max-width: 100%;
}

.cv-offset { margin-inline-start: 1.25rem; transform: rotate(-1.5deg); }
.cv-offset-alt { margin-inline-start: 0.5rem; transform: rotate(1deg); }

.cv-icon {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
  border-radius: 0.25rem;
  background: var(--color-bg-muted);
  border: 1px solid var(--color-line);
}

.cv-photo .cv-icon {
  background:
    linear-gradient(135deg, #d9e2e8 40%, transparent 40%),
    linear-gradient(45deg, #b7c5d1 0 55%, #eef3f6 55%);
}
.cv-note .cv-icon {
  background: #fff8e8;
  box-shadow: inset 0 -2px 0 rgba(138, 90, 18, 0.25);
}
.cv-chat .cv-icon {
  border-radius: 0.55rem 0.55rem 0.55rem 0.15rem;
  background: #e8f0f8;
}
.cv-warn {
  border-color: rgba(138, 90, 18, 0.35);
  background: var(--color-warn-bg);
  color: var(--color-warn);
}
.cv-warn .cv-icon {
  background: transparent;
  border: 0;
  position: relative;
}
.cv-warn .cv-icon::before,
.cv-warn .cv-icon::after {
  content: "";
  position: absolute;
  inset: 0.35rem;
  background: currentColor;
  height: 2px;
  top: 50%;
}
.cv-warn .cv-icon::before { transform: rotate(45deg); }
.cv-warn .cv-icon::after { transform: rotate(-45deg); }

.compare-stack {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.compare-stack li {
  position: relative;
  padding: 0.7rem 0.9rem 0.7rem 1.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  font-weight: 650;
  font-size: var(--fs-sm);
}

.compare-stack li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0.7rem;
  top: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--color-accent);
  transform: translateY(-50%);
}

.compare-stack .is-result {
  background: var(--color-bg-deep);
  border-color: var(--color-bg-deep);
  color: #fff;
}
.compare-stack .is-result::before { background: #7fd0db; }

/* Services */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  min-height: 100%;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(15, 110, 124, 0.35);
  color: inherit;
}

.service-index {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-accent);
  font-weight: 700;
}

.service-card p {
  margin: 0;
  color: var(--color-ink-soft);
  flex: 1;
}

.service-more {
  font-weight: 600;
  color: var(--color-accent-strong);
  font-size: var(--fs-sm);
}

.service-card-static {
  cursor: default;
}

.service-card-static:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--color-line);
}

/* Dual business directions */
.direction-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.direction-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  box-shadow: var(--shadow-sm);
}

.direction-card-accent {
  border-color: rgba(15, 110, 124, 0.28);
  background:
    linear-gradient(160deg, rgba(215, 238, 241, 0.55), #fff 55%);
}

.direction-label {
  margin: 0;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.direction-card h3 {
  margin: 0;
  font-size: var(--fs-lg);
}

.direction-card p {
  margin: 0;
  color: var(--color-ink-soft);
  flex: 1;
}

.direction-card .btn {
  align-self: flex-start;
  margin-top: var(--space-2);
}

.lead-accent {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-accent-strong);
  line-height: var(--lh-snug);
}

.footer-heading-spaced {
  margin-top: var(--space-5);
}

.nav-group-secondary {
  padding-inline-start: var(--space-2);
  border-inline-start: 1px solid var(--color-line);
  margin-inline-start: var(--space-1);
}

/* Demo blocks */
.demo-object,
.raumbuch-demo,
.leistung-demo,
.asset-demo {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
}

.demo-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-warn);
  background: var(--color-warn-bg);
  border: 1px solid rgba(138, 90, 18, 0.25);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.55rem;
  margin: 0 0 var(--space-3);
}

.demo-object-head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: flex-start;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.demo-object-title {
  min-width: 0;
  flex: 1 1 12rem;
}

.demo-object-title h3 {
  margin: 0;
}

.demo-object-head p,
.demo-finding p { margin: var(--space-2) 0 0; color: var(--color-ink-soft); }

.demo-footnote {
  margin: var(--space-4) 0 0;
  font-size: var(--fs-sm);
  color: var(--color-muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-sm);
  background: var(--color-ok-bg);
  color: var(--color-ok);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.demo-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: var(--space-3);
  margin: 0 0 var(--space-4);
}

.demo-meta div {
  padding: var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.demo-meta dt {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  font-weight: 700;
}

.demo-meta dd {
  margin: var(--space-1) 0 0;
  font-weight: 650;
}

.demo-finding {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  border: 1px solid rgba(15, 110, 124, 0.18);
  margin-bottom: var(--space-4);
}

.demo-finding h4 { margin: 0; font-size: var(--fs-sm); letter-spacing: 0.06em; text-transform: uppercase; }

.demo-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.demo-timeline li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: var(--space-3);
  align-items: baseline;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink-soft);
}

.demo-timeline time {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-accent-strong);
  font-weight: 700;
}

/* Process */
.process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-3);
}

.process-step {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.process-num {
  display: block;
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.process-step p {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: var(--fs-sm);
}

/* Region */
.region-panel {
  background: var(--color-bg-deep);
  color: #e8eef2;
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 1rem + 2vw, 3rem);
  box-shadow: var(--shadow-lg);
}

.region-panel .eyebrow { color: #7fd0db; }
.region-panel .lede { color: rgba(232, 238, 242, 0.82); }
.region-panel h2 { color: #fff; }

.region-grid {
  list-style: none;
  margin: var(--space-6) 0 var(--space-4);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.region-grid li {
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
}

.region-note {
  margin: 0;
  color: rgba(232, 238, 242, 0.7);
  font-size: var(--fs-sm);
}

/* Prep / CTA */
.prep-panel,
.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  background: var(--color-bg-elevated);
}

.prep-panel-calm {
  background: #f7fafb;
  border-color: var(--color-line);
  box-shadow: none;
}

.cta-panel {
  background:
    linear-gradient(135deg, rgba(15, 110, 124, 0.1), rgba(255, 255, 255, 0.9) 45%),
    var(--color-bg-elevated);
}

.prep-panel .lede,
.cta-panel p {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-soft);
  max-width: 40rem;
}

.cta-mail {
  margin-top: var(--space-3) !important;
  font-weight: 700;
}

.cta-mail a {
  color: var(--color-accent-strong);
  text-decoration: none;
}

.cta-mail a:hover {
  text-decoration: underline;
}

/* Page hero */
.page-hero {
  padding-block: var(--space-7) var(--space-6);
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.65), transparent);
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--space-6);
  align-items: center;
}

.page-hero-panel {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.mini-stack,
.structure-hint,
.checklist-preview {
  display: grid;
  gap: var(--space-2);
}

.mini-stack span,
.structure-hint span,
.checklist-preview span,
.asset-chip {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  font-weight: 600;
}

.mini-stack .is-accent,
.checklist-preview .ok {
  background: var(--color-accent-soft);
  border-color: rgba(15, 110, 124, 0.25);
  color: var(--color-accent-strong);
}

.checklist-preview .warn {
  background: var(--color-warn-bg);
  border-color: rgba(138, 90, 18, 0.25);
  color: var(--color-warn);
}

.asset-chip {
  display: grid;
  gap: var(--space-1);
}

.asset-id {
  font-family: var(--font-mono);
  color: var(--color-accent-strong);
}

.prose-grid,
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.prose-grid p,
.prose-wide p,
.legal-content p {
  color: var(--color-ink-soft);
}

.notice {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-warn-bg);
  border: 1px solid rgba(138, 90, 18, 0.2);
  color: var(--color-ink);
  font-size: var(--fs-sm);
}

.legal-todo { background: #fff4e5; }

.check-list,
.footer-links {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.4rem;
  color: var(--color-ink-soft);
}

.check-list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.85rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-accent);
}

.tag-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-list li {
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-line);
  font-size: var(--fs-sm);
  font-weight: 600;
}

/* Raumbuch demo */
.raumbuch-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-5);
  margin-top: var(--space-4);
}

.raumbuch-tree {
  font-size: var(--fs-sm);
}

.tree-root {
  margin: 0 0 var(--space-3);
  font-weight: 700;
}

.raumbuch-tree ul {
  list-style: none;
  margin: 0;
  padding-inline-start: 1rem;
  border-inline-start: 1px solid var(--color-line);
}

.tree-node {
  display: inline-block;
  padding: 0.25rem 0;
  font-weight: 650;
}

.tree-room {
  display: block;
  width: 100%;
  text-align: start;
  border: 1px solid transparent;
  background: transparent;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  color: var(--color-ink-soft);
}

.tree-room:hover,
.tree-room.is-active {
  background: var(--color-accent-soft);
  border-color: rgba(15, 110, 124, 0.25);
  color: var(--color-accent-strong);
}

.raumbuch-detail {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--color-bg);
}

.detail-note {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: var(--fs-sm);
}

/* Leistung demo */
.doc-points {
  margin: var(--space-3) 0 var(--space-5);
  color: var(--color-ink-soft);
}

.doc-results {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.doc-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: var(--color-bg);
}

.doc-row.is-ok { background: var(--color-ok-bg); border-color: rgba(31, 107, 69, 0.2); }
.doc-row.is-warn { background: var(--color-warn-bg); border-color: rgba(138, 90, 18, 0.2); }

/* Asset demo */
.asset-demo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  gap: var(--space-5);
  margin-top: var(--space-4);
}

.qr-panel {
  display: grid;
  place-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px dashed var(--color-line-strong);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.qr-panel p {
  margin: 0;
  font-size: var(--fs-xs);
  color: var(--color-muted);
}

.qr-fake {
  padding: var(--space-3);
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

/* Values / FAQ */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.values-grid article {
  padding: var(--space-4);
  border-top: 2px solid var(--color-accent);
  background: var(--color-bg-elevated);
  border-inline: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.values-grid p {
  margin: 0;
  color: var(--color-ink-soft);
  font-size: var(--fs-sm);
}

.faq details {
  border-bottom: 1px solid var(--color-line);
  padding-block: var(--space-4);
}

.faq summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

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

.faq details p {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-soft);
  max-width: 42rem;
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: var(--space-6);
  align-items: start;
}

.contact-mail {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin: var(--space-3) 0 var(--space-4);
}

.contact-form-wrap {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.contact-form {
  display: grid;
  gap: var(--space-4);
}

.form-field label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 650;
  font-size: var(--fs-sm);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font: inherit;
  color: var(--color-ink);
}

.form-field textarea { min-height: 9rem; resize: vertical; }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(15, 110, 124, 0.15);
  outline: none;
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: var(--color-error);
}

.field-error {
  margin: var(--space-2) 0 0;
  color: var(--color-error);
  font-size: var(--fs-sm);
}

.form-check label {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-weight: 500;
}

.form-check input {
  width: 1.15rem;
  height: 1.15rem;
  min-height: auto;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.hp-field {
  position: absolute;
  inset-inline-start: -10000px;
  height: 0;
  overflow: hidden;
}

.flash {
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
}

.flash p { margin: 0; }

.flash-success { background: var(--color-ok-bg); border-color: rgba(31, 107, 69, 0.25); color: var(--color-ok); }
.flash-success_dev { background: #e8f0ff; border-color: #b7c8ef; color: #1e3a6e; }
.flash-error { background: var(--color-error-bg); border-color: rgba(143, 31, 45, 0.2); color: var(--color-error); }

.legal-content {
  max-width: 46rem;
}

.legal-content h2 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-size: var(--fs-lg);
}

/* Footer */
.site-footer {
  margin-top: var(--space-7);
  padding-block: var(--space-7) var(--space-5);
  background: var(--color-bg-deep);
  color: rgba(232, 238, 242, 0.86);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-6);
}

.brand-footer { color: #fff; margin-bottom: var(--space-3); }
.brand-footer .brand-mark { color: #fff; }
.brand-footer .brand-mark-img {
  width: 24px;
  height: 24px;
}
.brand-footer .brand-word {
  color: #fff;
  letter-spacing: 0.06em;
}

.footer-tagline,
.footer-note {
  color: rgba(232, 238, 242, 0.7);
  font-size: var(--fs-sm);
}

.footer-heading {
  margin: 0 0 var(--space-3);
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
}

.footer-links li { margin-bottom: 0.45rem; }

.footer-links a,
.footer-mail a {
  color: rgba(232, 238, 242, 0.86);
  text-decoration: none;
}

.footer-links a:hover,
.footer-mail a:hover { color: #fff; text-decoration: underline; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: var(--fs-sm);
}

.footer-bottom p { margin: 0; }

/* Responsive */
@media (max-width: 1100px) {
  .process-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .region-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .values-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Hamburger earlier so desktop nav does not overflow on tablet */
@media (max-width: 1200px) {
  .nav-toggle { display: inline-flex; }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1;
    background: rgba(15, 36, 51, 0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease);
  }

  .site-header.is-open .nav-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    z-index: 3;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
    padding: var(--space-4) var(--gutter) var(--space-5);
    background: #f7fafb;
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-h));
    overflow: auto;
  }

  .site-header.is-open {
    background: #f7fafb;
  }

  .site-header.is-open .site-nav { display: flex; }

  .nav-group {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-line);
    margin-bottom: var(--space-2);
  }

  .nav-group-secondary {
    padding-inline-start: 0;
    border-inline-start: 0;
    margin-inline-start: 0;
  }

  .nav-label {
    display: block;
    font-size: var(--fs-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 700;
    padding: var(--space-2);
  }

  .btn-nav {
    margin-inline-start: 0;
    margin-top: var(--space-2);
    width: 100%;
  }
}

@media (max-width: 900px) {
  .hero-grid,
  .page-hero-grid,
  .service-grid,
  .direction-grid,
  .compare-grid,
  .prose-grid,
  .two-col,
  .raumbuch-layout,
  .asset-demo-grid,
  .contact-layout,
  .footer-grid,
  .prep-panel,
  .cta-panel {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .process-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .hero {
    padding-block: clamp(2rem, 1.4rem + 2vw, 3rem) var(--space-7);
  }

  .hero h1,
  .page-hero h1 {
    max-width: 100%;
  }

  .cv-offset,
  .cv-offset-alt {
    margin-inline-start: 0;
    transform: none;
  }
}

@media (max-width: 640px) {
  .process-steps,
  .region-grid,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    gap: var(--space-3);
  }

  .hero-actions .btn,
  .cta-panel .btn,
  .prep-panel .btn {
    width: 100%;
  }

  .section { padding-block: var(--space-7); }

  .demo-object-head {
    flex-direction: column;
  }

  .status-pill {
    align-self: flex-start;
  }
}

@media (max-width: 390px) {
  .brand { gap: 0.55rem; }
  .brand-mark-img { width: 24px; height: 24px; }
  .brand-word {
    letter-spacing: 0.04em;
    font-size: 0.98rem;
  }
  .flow-card,
  .demo-object,
  .contact-form-wrap,
  .compare-panel { padding: var(--space-4); }

  .hero h1,
  .page-hero h1 {
    font-size: 1.55rem;
    line-height: 1.22;
  }

  .brand-signal {
    font-size: 1.25rem;
  }
}

@media (max-width: 360px) {
  .hero h1,
  .page-hero h1 {
    font-size: 1.4rem;
    line-height: 1.24;
  }

  .gutter-tight {
    --gutter: 0.875rem;
  }
}