/* =====================================================================
   Völk-IT – Zentrale Stylesheet-Datei
   Design: „Hell & Professionell“ · Klare, seriöse Business-Optik mit viel
   Weißraum, ruhigen Blautönen, feinen Schatten und klarer Typografie.
   Responsive · Barrierearm · DSGVO-freundlich (nur Systemschriftarten).

   Struktur:
     1. Design-Tokens (CSS-Variablen)
     2. Reset & Grundlagen
     3. Typografie
     4. Layout-Hilfsklassen
     5. Buttons
     6. Kopfbereich / Navigation
     7. Hero
     8. Karten & Icons
     9. Komponenten (Vorteile, Ablauf, Listen, Chips, Notice, CTA, FAQ)
    10. Formulare
    11. Fußbereich
    12. Nach-oben-Button
    13. Animationen
    14. Responsive Anpassungen
    15. Utilities
   ===================================================================== */

/* 1. ==================== Design-Tokens ============================= */
:root {
  /* Blau-Palette (professionell, ruhig) */
  --c-navy: #0f2a4d;        /* Dunkelblau – Überschriften, Footer */
  --c-navy-2: #163a66;
  --c-blue: #1b5fd0;        /* Mittelblau – Primärakzent */
  --c-blue-dark: #124aa8;
  --c-blue-light: #eaf2fd;  /* Hellblau – zarte Flächen */
  --c-blue-soft: #f2f7fe;

  /* Neutrale Töne */
  --c-white: #ffffff;
  --c-grey-bg: #f5f8fc;     /* Helles Grau – alternierende Sektionen */
  --c-line: #e4eaf3;        /* Rahmenlinien */
  --c-line-2: #d5deeb;
  --c-text: #3a4762;        /* Fließtext – Dunkelgrau */
  --c-text-dim: #64718c;    /* Sekundärtext */
  --c-heading: #0f2a4d;     /* Überschriften */

  /* Statusfarben */
  --c-erfolg: #14884f;
  --c-erfolg-bg: #e6f6ee;
  --c-fehler: #c53030;
  --c-fehler-bg: #fdeceb;

  /* Kompatibilitäts-Aliase (aus dem Markup referenziert) */
  --c-dunkelblau: var(--c-navy);
  --c-dunkelblau-2: var(--c-navy-2);
  --c-mittelblau: var(--c-blue);
  --c-hellblau: #4f93e6;
  --c-hellblau-bg: var(--c-blue-light);
  --c-hellgrau: var(--c-grey-bg);
  --c-grau-linie: var(--c-line);
  --c-textgrau: var(--c-text);
  --c-textgrau-hell: var(--c-text-dim);
  --c-weiss: var(--c-white);
  --c-cyan: var(--c-blue);

  /* Abstände (großzügig, aber ruhig) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3.25rem;
  --space-xl: 5.5rem;

  /* Radien & Schatten (dezent, seriös) */
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(15, 42, 77, 0.06), 0 2px 8px rgba(15, 42, 77, 0.05);
  --shadow: 0 8px 24px rgba(15, 42, 77, 0.09);
  --shadow-lg: 0 20px 50px rgba(15, 42, 77, 0.14);
  --shadow-blue: 0 10px 26px rgba(27, 95, 208, 0.22);

  /* Layout */
  --content-width: 1200px;
  --header-height: 78px;

  /* Typografie */
  --font-basis: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --transition: 0.24s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. ==================== Reset & Grundlagen ======================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-basis);
  font-size: 1.02rem;
  line-height: 1.72;
  color: var(--c-text);
  background-color: var(--c-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--c-blue);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--c-blue-dark);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--c-blue);
  outline-offset: 2px;
  border-radius: 5px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-navy);
  color: #fff;
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  z-index: 2000;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

/* 3. ==================== Typografie =============================== */
h1,
h2,
h3,
h4 {
  color: var(--c-heading);
  line-height: 1.16;
  margin: 0 0 var(--space-sm);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.2rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
}

h3 {
  font-size: clamp(1.18rem, 1.9vw, 1.38rem);
  font-weight: 700;
}

h4 {
  font-size: 1.06rem;
  font-weight: 700;
}

p {
  margin: 0 0 var(--space-sm);
}

ul,
ol {
  margin: 0 0 var(--space-sm);
  padding-left: 1.3rem;
}

li {
  margin-bottom: 0.4rem;
}

strong {
  color: var(--c-heading);
  font-weight: 700;
}

.text-grad {
  color: var(--c-blue);
}

/* 4. ==================== Layout-Hilfsklassen ====================== */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.4rem;
}

.section {
  position: relative;
  padding: var(--space-xl) 0;
}

.section--tight {
  padding: var(--space-lg) 0;
}

.section--grau {
  background-color: var(--c-grey-bg);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.section--blau {
  background-color: var(--c-blue-soft);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

/* „Dunkel“-Sektion als kräftiges Blau-Band für Kontrast/Abwechslung */
.section--dunkel {
  background: linear-gradient(155deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
  color: #d7e3f2;
}

.section--dunkel h2,
.section--dunkel h3,
.section--dunkel h4 {
  color: #ffffff;
}

.section--dunkel p {
  color: #c3d3e6;
}

.section-head {
  max-width: 760px;
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.section-head--links {
  margin-left: 0;
  text-align: left;
}

.section-head p {
  color: var(--c-text-dim);
  font-size: 1.12rem;
  margin-bottom: 0;
}

.section--dunkel .section-head p {
  color: #b6c8de;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--c-blue);
  margin-bottom: 0.9rem;
  padding: 0.4rem 0.9rem;
  background: var(--c-blue-light);
  border: 1px solid var(--c-line);
  border-radius: 100px;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-blue);
}

.section--dunkel .eyebrow,
.hero .eyebrow {
  color: #cfe2f8;
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.18);
}

.section--dunkel .eyebrow::before,
.hero .eyebrow::before {
  background: #8ec2f0;
}

.text-center {
  text-align: center;
}

.lead {
  font-size: 1.18rem;
  color: var(--c-text-dim);
}

.grid {
  display: grid;
  gap: 1.6rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 5. ==================== Buttons ================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition),
    background-color var(--transition), color var(--transition),
    border-color var(--transition);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background-color: var(--c-blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}

.btn--primary:hover {
  background-color: var(--c-blue-dark);
  color: #fff;
  box-shadow: 0 14px 32px rgba(27, 95, 208, 0.3);
}

.btn--secondary {
  background-color: #fff;
  color: var(--c-blue);
  border-color: var(--c-line-2);
}

.btn--secondary:hover {
  background-color: var(--c-blue-light);
  color: var(--c-blue-dark);
  border-color: var(--c-blue);
}

/* Heller CTA (in Heroes auf dunklem Grund) */
.btn--hell {
  background-color: #fff;
  color: var(--c-navy);
}

.btn--hell:hover {
  background-color: var(--c-blue-light);
  color: var(--c-navy);
}

/* Ghost (in Heroes auf dunklem Grund) */
.btn--ghost {
  background-color: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.55);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: #fff;
}

.btn--block { width: 100%; }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn-group--center { justify-content: center; }

/* 6. ==================== Kopfbereich / Navigation ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  font-size: 1.38rem;
  color: var(--c-heading);
  white-space: nowrap;
  letter-spacing: -0.02em;
}

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

.brand__logo {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 11px;
}

.brand__text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
}

.brand__text small {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-blue);
  text-transform: uppercase;
  margin-top: 4px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav a {
  display: inline-block;
  padding: 0.55rem 0.85rem;
  color: var(--c-text);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  white-space: nowrap;
  transition: color var(--transition), background-color var(--transition);
}

.main-nav a:hover {
  background: var(--c-blue-light);
  color: var(--c-navy);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--c-blue);
  background: var(--c-blue-light);
}

/* --- Dropdown „Leistungen“ ------------------------------------------ */
.nav-item--drop {
  position: relative;
  display: inline-flex;
}

.nav-drop-toggle {
  display: inline-flex !important;
  align-items: center;
  gap: 0.3rem;
}

.nav-caret {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition);
}

.nav-item--drop:hover .nav-caret,
.nav-item--drop:focus-within .nav-caret {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  padding: 0.5rem;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition),
    visibility var(--transition);
  z-index: 1010;
}

/* Unsichtbare „Brücke“, damit der Hover beim Überfahren nicht abreißt */
.nav-dropdown::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
}

.nav-item--drop:hover .nav-dropdown,
.nav-item--drop:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--c-text);
  border-radius: 8px;
  white-space: nowrap;
}

.nav-dropdown a:hover {
  background: var(--c-blue-light);
  color: var(--c-navy);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  color: var(--c-navy);
  white-space: nowrap;
}

.header-phone:hover {
  color: var(--c-blue);
  text-decoration: none;
}

.header-phone svg {
  width: 18px;
  height: 18px;
  fill: var(--c-blue);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 0;
  background: #fff;
  border: 1px solid var(--c-line-2);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background-color: var(--c-navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 7. ==================== Hero ===================================== */
.hero {
  position: relative;
  background: linear-gradient(150deg, var(--c-navy) 0%, #16386a 55%, var(--c-blue) 120%);
  color: #e8f1fc;
  padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 4.5rem);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.6;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero h1 {
  color: #fff;
  margin-bottom: 1.15rem;
}

.hero h1 .text-grad {
  color: #8ec8ff;
}

.hero__sub {
  font-size: clamp(1.08rem, 1.9vw, 1.3rem);
  color: #cdddf0;
  margin-bottom: 1.9rem;
  max-width: 650px;
  line-height: 1.6;
}

.hero--klein {
  padding: clamp(2.75rem, 6vw, 4.25rem) 0 clamp(2.25rem, 4vw, 3.25rem);
}

.hero--klein .hero__inner {
  max-width: 860px;
}

/* Vertrauens-Chips im Hero */
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2.1rem;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #eaf2fc;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 100px;
}

.hero-badges span::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #8ec8ff;
}

.breadcrumb {
  font-size: 0.85rem;
  color: #a9c1dc;
  margin-bottom: 1rem;
}

.breadcrumb a { color: #d4e3f4; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 0.4rem; opacity: 0.55; }

/* 8. ==================== Karten & Icons =========================== */
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
  height: 100%;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: var(--c-line-2);
}

.card h3 { margin-bottom: 0.65rem; }
.card p { color: var(--c-text); }
.card p:last-child { margin-bottom: 0; }

/* Verlinkte Karten: Fließtext soll nicht die Linkfarbe erben */
a.card,
a.card:hover { color: var(--c-text); text-decoration: none; }

.card--link {
  display: flex;
  flex-direction: column;
}

.card__more {
  margin-top: auto;
  padding-top: 1rem;
  font-weight: 700;
  color: var(--c-blue);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.card__more::after {
  content: "→";
  transition: transform var(--transition);
}

.card--link:hover .card__more::after { transform: translateX(4px); }

/* Icon-Kachel */
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 13px;
  margin-bottom: 1.1rem;
  background: var(--c-blue-light);
  border: 1px solid #dbe8fa;
}

.card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--c-blue);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 9. ==================== Komponenten ============================= */

/* Vertrauens-/Vorteilsliste mit Häkchen */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem 1.6rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-grid li {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  margin: 0;
}

.feature-grid li::before {
  content: "";
  flex-shrink: 0;
  width: 23px;
  height: 23px;
  margin-top: 1px;
  border-radius: 7px;
  background-color: var(--c-blue-light);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b5fd0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 13px;
}

.section--dunkel .feature-grid li::before {
  background-color: rgba(255, 255, 255, 0.14);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238ec8ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 13px;
}

/* Kompakte Häkchenliste */
.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.55rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 15px;
  height: 15px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b5fd0' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
}

.section--dunkel .check-list li::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238ec8ff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

/* Mehrspaltige Auflistung */
.column-list {
  columns: 2;
  column-gap: 2.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.column-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  break-inside: avoid;
}

.column-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.56em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-blue);
}

/* Ablauf in Schritten */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1.6rem;
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}

.steps li {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 2.7rem 1.5rem 1.5rem;
  box-shadow: var(--shadow-sm);
  margin: 0;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -20px;
  left: 1.5rem;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  color: #fff;
  background: var(--c-blue);
  border-radius: 13px;
  box-shadow: var(--shadow-blue);
}

.steps h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.steps p { margin-bottom: 0; color: var(--c-text-dim); font-size: 0.96rem; }

/* Statistik-Band */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stats__num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--c-blue);
  display: block;
}

/* Technologie-Chips */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.tech-tags li {
  margin: 0;
  padding: 0.5rem 1.05rem;
  background: #fff;
  border: 1px solid var(--c-line-2);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-navy);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.tech-tags li:hover {
  transform: translateY(-2px);
  border-color: var(--c-blue);
  box-shadow: var(--shadow);
}

/* Zweispaltiger Inhalt */
.split {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3rem;
  align-items: start;
}

.split--gleich { grid-template-columns: 1fr 1fr; }

.aside-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-blue);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow-sm);
}

.aside-card h3 { font-size: 1.2rem; }

/* Hinweis-/Info-Box */
.notice {
  background: var(--c-blue-light);
  border: 1px solid #d7e6fa;
  border-left: 4px solid var(--c-blue);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.35rem;
  margin: 1.6rem 0;
}

.notice p:last-child { margin-bottom: 0; }

.notice--warn {
  background: #fff8ea;
  border-color: #f3e2bd;
  border-left-color: #d6900a;
}

.notice strong { color: var(--c-heading); }

/* Call-to-Action Band */
.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--c-navy) 0%, var(--c-blue) 120%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2.4rem, 5vw, 3.6rem);
  text-align: center;
  box-shadow: var(--shadow);
}

.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.5;
  pointer-events: none;
}

.cta-band > * { position: relative; z-index: 1; }

.cta-band h2 { color: #fff; margin-bottom: 0.7rem; }
.cta-band p { color: #d5e3f5; max-width: 640px; margin: 0 auto 1.7rem; }

/* FAQ / Aufklappbereiche */
.faq details {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 0 1.3rem;
  margin-bottom: 0.8rem;
  box-shadow: var(--shadow-sm);
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--c-heading);
  padding: 1.05rem 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

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

.faq summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--c-blue);
  transition: transform var(--transition);
}

.faq details[open] summary::after { content: "–"; }
.faq details[open] { border-color: var(--c-line-2); }
.faq details > p { padding-bottom: 1rem; margin: 0; color: var(--c-text-dim); }

/* Problem-Karten */
.problem-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--c-line-2);
}

.problem-card h4 { color: var(--c-blue); margin-bottom: 0.35rem; }
.problem-card p { margin: 0; color: var(--c-text-dim); font-size: 0.96rem; }

/* 10. ==================== Formulare =============================== */
.form-card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 4vw, 2.6rem);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-weight: 600;
  color: var(--c-heading);
  margin-bottom: 0.45rem;
  font-size: 0.95rem;
}

.form-group .pflicht { color: var(--c-fehler); }

.form-control {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  color: var(--c-text);
  padding: 0.78rem 0.95rem;
  border: 1px solid var(--c-line-2);
  border-radius: var(--radius-sm);
  background-color: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control::placeholder { color: #9aa6bd; }

.form-control:focus {
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(27, 95, 208, 0.15);
  outline: none;
}

textarea.form-control { min-height: 155px; resize: vertical; }

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231b5fd0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  background-size: 18px;
  padding-right: 2.6rem;
}

.check-field {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
}

.check-field input[type="checkbox"] {
  width: 1.3rem;
  height: 1.3rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
  accent-color: var(--c-blue);
}

.check-field label {
  margin: 0;
  font-weight: 400;
  color: var(--c-text);
  font-size: 0.95rem;
}

.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-message {
  padding: 1.05rem 1.3rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.form-message--erfolg {
  background: var(--c-erfolg-bg);
  border-left: 4px solid var(--c-erfolg);
  color: #0f6b3d;
}

.form-message--fehler {
  background: var(--c-fehler-bg);
  border-left: 4px solid var(--c-fehler);
  color: #9a2620;
}

.field-error {
  display: block;
  color: var(--c-fehler);
  font-size: 0.85rem;
  margin-top: 0.4rem;
  font-weight: 600;
}

.form-control.has-error { border-color: var(--c-fehler); }

.contact-info { list-style: none; padding: 0; margin: 0; }

.contact-info li {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  margin-bottom: 1.3rem;
}

.contact-info .ci-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-blue-light);
  border: 1px solid #dbe8fa;
  border-radius: 12px;
}

.contact-info .ci-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--c-blue);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-info .ci-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-dim);
  display: block;
}

.contact-info .ci-value {
  font-weight: 700;
  color: var(--c-heading);
  font-size: 1.05rem;
}

/* 11. ==================== Fußbereich ============================== */
.site-footer {
  position: relative;
  background: linear-gradient(160deg, var(--c-navy) 0%, #0a1f3a 100%);
  color: #b8c8dd;
  padding: var(--space-xl) 0 1.8rem;
  font-size: 0.96rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 2.2rem;
  margin-bottom: 2.8rem;
}

.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 1.1rem; }
.site-footer a { color: #b8c8dd; }
.site-footer a:hover { color: #fff; }

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 0.9rem;
  letter-spacing: -0.02em;
}

.footer-brand img {
  width: 40px;
  height: 40px;
  border-radius: 11px;
}

.footer-nav { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 0.55rem; }

.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li { margin-bottom: 0.65rem; display: flex; gap: 0.5rem; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.86rem;
  color: #90a3bd;
}

.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 1.3rem; }

/* 12. ==================== Nach-oben-Button ======================= */
.to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 13px;
  background: var(--c-blue);
  color: #fff;
  cursor: pointer;
  box-shadow: var(--shadow-blue);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition),
    visibility var(--transition), background-color var(--transition);
  z-index: 900;
}

.to-top svg {
  width: 22px;
  height: 22px;
  margin: 0 auto;
  stroke: #fff;
  fill: none;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--c-blue-dark); transform: translateY(-3px); }

/* 13. ==================== Animationen ============================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.is-visible { opacity: 1; transform: translateY(0); }

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* 14. ==================== Responsive ============================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  .nav-toggle { display: flex; }

  /* Auf schmalen Screens nur das Telefon-Icon zeigen (Text ausblenden) */
  .header-phone span { display: none; }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-lg);
    padding: 0.6rem 1.1rem 1.2rem;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition),
      visibility var(--transition);
  }

  .main-nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }

  .main-nav a {
    padding: 0.9rem 0.8rem;
    border-bottom: 1px solid var(--c-grey-bg);
    font-size: 1rem;
    border-radius: 0;
  }

  .main-nav a.active { background: var(--c-blue-light); }

  /* Dropdown im mobilen Menü: statisch als eingerückte Unterliste */
  .nav-item--drop {
    display: block;
    width: 100%;
  }

  .nav-drop-toggle {
    justify-content: space-between;
    width: 100%;
  }

  .nav-caret { display: none; }

  .nav-dropdown {
    position: static;
    min-width: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0;
    background: transparent;
  }

  .nav-dropdown a {
    padding: 0.75rem 0.8rem 0.75rem 1.8rem;
    border-bottom: 1px solid var(--c-grey-bg);
    border-radius: 0;
    font-weight: 500;
    color: var(--c-text-dim);
  }

  .nav-dropdown::before { display: none; }
}

@media (max-width: 680px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .column-list { columns: 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-actions .btn { display: none; }
  .btn-group .btn { width: 100%; }
  .section { padding: var(--space-lg) 0; }
}

/* 15. ==================== Utilities =============================== */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.nowrap { white-space: nowrap; }