/* ===========================
   desktop.css – ab 900px
   Zeitlos, ruhig, klassisch
   =========================== */

/* Grundlayout & Typografie
   ------------------------ */

:root {
  --bg-page: #f5f5f5;
  --bg-surface: #ffffff;
  --bg-muted: #f0f0f0;

  --border-subtle: #e0e0e0;
  --border-strong: #cfcfcf;

  --text-main: #222222;
  --text-muted: #666666;
  --text-soft: #888888;

  --accent: #4b5563;      /* gedecktes Grau-Blau */
  --accent-soft: #e3e6ea;

  --radius-small: 4px;
  --radius-medium: 6px;
  --radius-large: 8px;

  --shadow-soft: 0 8px 18px rgba(0, 0, 0, 0.04);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
}

/* Links */

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Basis-Struktur
   -------------- */

main {
  padding-bottom: 4rem;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===================================
   HEADER – .site-topbar (Desktop)
   =================================== */

.site-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
}

.topbar-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Brand / Logo */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-main);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.brand-text {
  white-space: nowrap;
}

/* Markenpunkt */
.brand-mark,
.brand-mark.small {
  display: inline-flex;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), #ffffff);
}

/* Navigation Desktop */

.nav-toggle {
  display: none; /* Desktop: Burger ausgeblendet, Mobile regelt mobile.css */
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* Kontakt-Button im Header */

.nav .btn.small {
  font-size: 0.85rem;
  padding: 0.4rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background-color: #ffffff;
  color: var(--text-main);
  box-shadow: none;
}

.nav .btn.small i[data-lucide] {
  margin-right: 0.3rem;
}

.nav .btn.small:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* Buttons allgemeine Basis
   ------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  padding: 0.55rem 1.4rem;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  background-color: transparent;
  color: var(--accent);
  text-decoration: none;
  transition:
    background-color 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.btn .btn-icon {
  display: inline-flex;
  align-items: center;
}

.btn.primary {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 6px 12px rgba(15, 23, 42, 0.12);
}

.btn.primary:hover {
  background-color: #374151;
  border-color: #374151;
  text-decoration: none;
}

.btn.plain {
  background-color: transparent;
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.btn.plain:hover {
  background-color: #ffffff;
  box-shadow: var(--shadow-soft);
  text-decoration: none;
}

/* Page Intro (ruhiger Hero)
   ------------------------- */

.page-intro {
  padding: 3.5rem 0 4.2rem;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(to bottom, #ffffff 0%, #f8f8f8 100%);
}

.page-intro-inner {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 1.4fr);
  gap: 4rem;
  align-items: flex-start;
}

.intro-text {
  max-width: 780px;
}

.intro-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--text-soft);
  margin: 0 0 0.5rem;
}

.intro-title {
  font-size: 2.4rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
}

.intro-subtitle {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.intro-meta {
  margin: 0 0 1.8rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

/* Intro-Rechte Spalte: Profil & KI
   -------------------------------- */

.intro-aside {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.info-block {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-large);
  padding: 1.25rem 1.2rem 1.2rem;
  box-shadow: var(--shadow-soft);
}

.info-block-muted {
  background-color: var(--bg-muted);
  box-shadow: none;
}

.info-title,
.info-subtitle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.8rem;
  font-size: 1rem;
  font-weight: 500;
}

.info-icon {
  width: 1.1rem;
  height: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.info-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.info-list li {
  margin-bottom: 0.35rem;
}

/* Abschnitte allgemein
   -------------------- */

.section {
  padding: 3rem 0;
}

.section-bordered {
  padding: 3rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background-color: #ffffff;
}

.section-cta {
  padding: 3.25rem 0 3rem;
  border-top: 1px solid var(--border-subtle);
  background: linear-gradient(to bottom, #f8f8f8 0%, #f2f2f2 100%);
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.section-inner-compact {
  max-width: 720px;
}

.section-header {
  margin-bottom: 1.75rem;
}

.section-header-inline {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.section-header h2 {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 500;
  margin: 0;
}

.section-icon {
  width: 1.1rem;
  height: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.section-intro {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Textgitter / Spalten
   -------------------- */

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 1.2fr);
  gap: 2.75rem;
  align-items: flex-start;
}

.section-column {
  font-size: 0.98rem;
  color: var(--text-main);
}

.section-column p {
  margin-top: 0;
  margin-bottom: 1rem;
}

.section-column-emphasis {
  background-color: var(--bg-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--border-subtle);
  padding: 1.4rem 1.3rem 1.3rem;
  box-shadow: var(--shadow-soft);
}

.section-column-emphasis h3 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  font-size: 1.02rem;
  font-weight: 500;
}

/* Listen
   ------ */

.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plain-list li {
  position: relative;
  padding-left: 0.9rem;
  margin-bottom: 0.35rem;
}

.plain-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--text-soft);
}

/* Leistungsschwerpunkte
   --------------------- */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(260px, 1fr));
  gap: 2rem;
  align-items: stretch;
}

/* Text darf nicht aus dem Kasten, lange Wörter hyphenieren */
.service-card,
.service-card * {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.service-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--border-subtle);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-soft);
  font-size: 1rem;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-card h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.9rem;
  font-size: 1rem;
  font-weight: 500;
}

.service-icon {
  width: 1.05rem;
  height: 1.05rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

/* Branchenerfahrung & Kernkompetenzen
   ----------------------------------- */

.pill-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.pill-grid-compact {
  margin-top: 0.75rem;
  margin-bottom: 0.9rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background-color: #ffffff;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pill-icon {
  width: 1rem;
  height: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.subsection {
  margin-top: 1.75rem;
}

.subsection h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.02rem;
  font-weight: 500;
  margin: 0 0 0.65rem;
}

.subsection-note {
  margin: 0.2rem 0 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.subsection p {
  margin: 0.4rem 0 0;
  font-size: 0.96rem;
  color: var(--text-main);
}

/* Referenzen
   ---------- */

.reference-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.reference-item {
  background-color: var(--bg-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem 1.2rem 1.1rem;
  box-shadow: var(--shadow-soft);
  font-size: 0.95rem;
}

.reference-item h3 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 500;
}

.reference-item p {
  margin: 0;
  color: var(--text-muted);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
}

.link-arrow-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* CTA-Bereich
   ----------- */

.section-cta .cta-content {
  text-align: left;
}

.section-cta h2 {
  margin: 0 0 0.6rem;
  font-size: 1.4rem;
  font-weight: 500;
}

.section-cta p {
  margin: 0 0 1.2rem;
  font-size: 0.97rem;
  color: var(--text-muted);
}

/* ===================================
   FOOTER – .site-footer
   =================================== */

.site-footer {
  margin-top: 2.5rem;
  background-color: #ffffff;
  border-top: 1px solid var(--border-subtle);
}

/* erste Zeile */

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem 0.5rem 1.1rem;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* kleiner Markenpunkt im Footer */
.footer-brand .brand-mark.small {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), #ffffff);
}

.footer-nav {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
}

.footer-nav a {
  font-size: 0.86rem;
  color: var(--text-soft);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--accent);
}

/* zweite Zeile mit © */

.footer-meta {
  border-top: 1px solid var(--border-subtle);
  background-color: #f9f9f9;
  padding: 0.6rem 0;
}

.footer-meta small {
  display: block;
  font-size: 0.8rem;
  color: var(--text-soft);
  text-align: left;
}

/* Lucide Icons
   ------------ */

i[data-lucide] {
  width: 1em;
  height: 1em;
  display: inline-block;
  line-height: 1;
}

/* Kleine Helfer
   ------------- */

.link-arrow:hover,
.link-arrow:focus {
  color: var(--accent);
  text-decoration: none;
}

/* ===================================
   Allgemein für Unterseiten (Kontakt / Referenzen)
   =================================== */

/* etwas schmalerer Container für Kontaktseite */
.container.narrow {
  max-width: 720px;
}

/* Seitentitel mit Icon */
main.section > .container h1 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.8rem;
  font-weight: 500;
  margin: 0 0 0.4rem;
}

main.section > .container h1 i[data-lucide] {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent);
}

/* Lead-Text unter Überschriften */
.lead {
  margin: 0 0 1.6rem;
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 640px;
}

/* Ghost-Button (z.B. "Zur Startseite") */
.btn.ghost {
  background-color: transparent;
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.btn.ghost:hover {
  background-color: #ffffff;
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
}

/* ===================================
   Kontaktseite – Formular
   =================================== */

.form {
  margin-top: 2rem;
  background-color: var(--bg-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--border-subtle);
  padding: 1.8rem 1.6rem 1.7rem;
  box-shadow: var(--shadow-soft);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 1.1rem;
}

.form-row:last-of-type {
  margin-bottom: 1.4rem;
}

.form-row label {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.form-row input,
.form-row textarea {
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  padding: 0.6rem 0.7rem;
  font: inherit;
  color: var(--text-main);
  background-color: #ffffff;
  outline: none;
  transition:
    border-color 0.12s ease,
    box-shadow 0.12s ease,
    background-color 0.12s ease;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: #b0b0b0;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(75, 85, 99, 0.15);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

/* ===================================
   Referenzen – Projektübersicht
   =================================== */

.projects-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.6rem;
}

/* Karte für ein Projekt */
.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border-radius: var(--radius-large);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  color: inherit;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.06);
  border-color: var(--border-strong);
  text-decoration: none;
}

/* Bildbereich (Platzhalter – kann später durch echte Bilder ersetzt werden) */
.project-media {
  height: 140px;
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 50%, #f3f4f6 100%);
}

/* Textbereich der Referenzkarte */
.project-meta {
  padding: 1.05rem 1.2rem 1rem;
}

.project-meta h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  font-weight: 500;
}

.project-meta p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* in desktop.css */
.section-switcher {
  display: none;
}


/* ===================================
   HEADER – Desktop (ab 900px)
   =================================== */

.site-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
}

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* Brand */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-main);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--accent);
}

.brand-text {
  white-space: nowrap;
}

.brand-mark,
.brand-mark.small {
  display: inline-flex;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: radial-gradient(circle at 30% 30%, var(--accent-soft), #ffffff);
}

/* Desktop-Navigation: inline rechts */

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-left: auto;
}

.nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  white-space: nowrap;
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--accent);
}

/* Kontakt-Button im Header Desktop */

.nav .btn.small {
  font-size: 0.85rem;
  padding: 0.4rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background-color: #ffffff;
  color: var(--text-main);
  box-shadow: none;
}

.nav .btn.small i[data-lucide] {
  margin-right: 0.3rem;
}

.nav .btn.small:hover {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

/* Burger-Button nur Mobile anzeigen */

.nav-toggle {
  display: none;
}

/* Desktop: Header ein-/ausblenden mit sanfter Transition */
/* Das eigentliche Header-Element im Include */
.site-topbar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
}

.site-topbar.hide {
  transform: translateY(-100%);
  opacity: 0;
}

.site-topbar.show {
  transform: translateY(0);
  opacity: 1;
}

/* Wrapper für den Header */
#site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

/* Wenn JS .hide setzt → hochfahren + ausblenden */
#site-header.hide {
  transform: translateY(-100%);
  opacity: 0;
}