/*
  Komponentenbibliothek — Styleguide Kap. 3.4.
  Phase 2: Buttons, Header/Navigation, Mobiles Menü, Footer.
  Phase 3: Hero, Bildplatzhalter, Cards, Leistungsbox, Checkliste, CTA-Band.
  Weitere Komponenten (Tabellen) folgen bei Bedarf in späteren Phasen.
*/

/* ---------- Buttongruppen ---------- */

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-1);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-fast) ease-out, color var(--dur-fast) ease-out,
    border-color var(--dur-fast) ease-out;
}

@media (max-width: 767px) {
  .btn {
    height: 44px;
  }
}

.btn-primary {
  background: var(--brand-teal);
  border: 2px solid var(--brand-teal);
  color: #ffffff;
}

.btn-primary:hover {
  background: #0a616e;
  border-color: #0a616e;
}

.btn-primary:active {
  background: #084e58;
  border-color: #084e58;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--brand-anthracite);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--text-primary);
  border-color: var(--text-primary);
  color: #ffffff;
}

.btn[disabled] {
  background: var(--bg-muted);
  border-color: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-tertiary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: auto;
  padding: 0;
  background: none;
  border: none;
  color: var(--brand-teal);
  text-decoration: underline;
  text-decoration-color: #9fcbd3;
  text-underline-offset: 3px;
}

.btn-tertiary:hover {
  text-decoration-color: var(--brand-teal);
}

.btn-tertiary__arrow {
  display: inline-block;
  transition: transform var(--dur-fast) ease-out;
}

.btn-tertiary:hover .btn-tertiary__arrow {
  transform: translateX(4px);
}

/* ---------- Skip-Link (siehe base.css .skip-link) ---------- */

/* ---------- Header & Navigation ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  height: 80px;
  transition: height var(--dur-base) var(--ease);
}

.site-header.is-scrolled .site-header__inner {
  height: 64px;
}

.site-header.has-shadow {
  box-shadow: var(--shadow-overlay);
}

.site-header__logo {
  display: block;
  flex-shrink: 0;
}

.site-header__logo img {
  height: 40px;
  width: auto;
}

.site-nav {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  display: inline-block;
  padding: var(--space-2) 0;
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.site-nav__link:hover {
  color: var(--brand-teal);
  border-bottom-color: var(--border-strong);
}

.site-nav__link.is-active {
  color: var(--text-primary);
  border-bottom-color: var(--brand-cyan);
}

.site-header__contact {
  flex-shrink: 0;
}

.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: auto;
}

.mobile-menu-toggle__icon,
.mobile-menu-toggle__icon::before,
.mobile-menu-toggle__icon::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  position: relative;
  transition: transform var(--dur-fast) ease-out, opacity var(--dur-fast) ease-out;
}

.mobile-menu-toggle__icon::before {
  content: "";
  top: -7px;
}

.mobile-menu-toggle__icon::after {
  content: "";
  top: 5px;
}

.site-header.is-nav-open .mobile-menu-toggle__icon {
  background: transparent;
}

.site-header.is-nav-open .mobile-menu-toggle__icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site-header.is-nav-open .mobile-menu-toggle__icon::after {
  top: -2px;
  transform: rotate(-135deg);
}

@media (max-width: 1023px) {
  .site-nav,
  .site-header__contact {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }
}

.mobile-nav {
  position: fixed;
  inset: 0;
  top: 0;
  background: var(--bg-base);
  z-index: 60;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--dur-base) var(--ease);
}

.mobile-nav:not([hidden]) {
  transform: translateX(0);
}

.mobile-nav[hidden] {
  display: flex; /* per JS über hidden-Attribut gesteuert, transform übernimmt Sichtbarkeit */
}

.mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: var(--space-16) var(--space-6) 0;
  flex: 1;
  overflow-y: auto;
}

.mobile-nav__list li {
  border-bottom: 1px solid var(--border);
}

.mobile-nav__list a {
  display: flex;
  align-items: center;
  height: 64px;
  font-size: 20px;
  color: var(--text-primary);
  text-decoration: none;
}

.mobile-nav__list a.is-active {
  color: var(--brand-teal);
}

.mobile-nav__contact {
  margin: var(--space-6);
  justify-content: center;
}

@media (min-width: 1024px) {
  .mobile-nav {
    display: none;
  }
}

/* Scroll-Lock während geöffnetem mobilem Menü */
body.nav-open {
  overflow: hidden;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--bg-inverse);
  color: var(--text-on-dark);
  padding-top: 80px; /* expliziter Wert laut Styleguide Kap. 3.4 */
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-8); /* 32px */
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer__logo-plate {
  display: inline-block;
  background: #ffffff;
  border-radius: var(--radius-0);
  padding: var(--space-2) var(--space-3);
  line-height: 0;
}

.footer__logo-plate img {
  height: 32px;
  width: auto;
  display: block;
}

.footer__claim {
  margin-top: var(--space-4);
  color: var(--text-on-dark);
  font-size: 14px;
}

.footer__heading {
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-cyan);
}

.footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__col a {
  color: var(--text-on-dark);
  text-decoration: none;
}

.footer__col a:hover {
  color: var(--brand-cyan);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
  border-top: 1px solid #3a4247;
  font-size: 14px;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer__legal {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.footer__legal a,
.footer__legal button {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.footer__legal a:hover,
.footer__legal button:hover {
  color: var(--brand-cyan);
}

/* ---------- Sektionen ---------- */

.section {
  width: 100%;
}

.section--subtle {
  background: var(--bg-subtle);
}

/* ---------- Hero ---------- */

.hero {
  display: grid;
  gap: var(--space-12);
  align-items: center;
  padding-block: var(--space-16);
}

/* ---------- Zweispaltiger Inhalt (Text + Leistungsbox) ---------- */

.split {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .split {
    grid-template-columns: 7fr 5fr;
  }

  .split--reverse {
    grid-template-columns: 5fr 7fr;
  }
}

/* ---------- Checkliste ---------- */

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist li {
  display: flex;
  gap: var(--space-3);
  color: var(--text-body);
}

.checklist li::before {
  content: "✓";
  color: var(--success);
  font-weight: 600;
  flex-shrink: 0;
}

/* ---------- Leistungsbox ---------- */

.leistungsbox {
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-0);
  padding: var(--space-8);
}

.leistungsbox__title {
  margin-bottom: var(--space-4);
}

/* ---------- Cards & Kartenraster ---------- */

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

@media (min-width: 768px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

.card {
  position: relative;
  display: block;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-0);
  padding: var(--space-8);
  border-top: 3px solid transparent;
  transition: border-color var(--dur-fast) ease-out, transform var(--dur-fast) ease-out;
  text-decoration: none;
  color: inherit;
}

.card:hover,
.card:focus-within {
  border-color: var(--brand-teal);
  border-top-color: var(--brand-cyan);
  transform: translateY(-2px);
}

.card__icon {
  display: inline-block;
  width: 32px;
  height: 32px;
  margin-bottom: var(--space-4);
  color: var(--brand-teal);
}

.card__icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.card__title {
  margin-bottom: var(--space-2);
}

.card__text {
  color: var(--text-body);
  margin-bottom: var(--space-4);
}

.card__link {
  font-size: 16px;
}

/* ---------- CTA-Band ---------- */

.cta-band {
  background: var(--brand-cyan);
  padding-block: var(--space-24);
}

.cta-band__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: flex-start;
}

@media (min-width: 768px) {
  .cta-band__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.cta-band p {
  color: #10343a;
  margin: 0;
}

.cta-band__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.cta-band .btn-primary {
  background: var(--bg-inverse);
  border-color: var(--bg-inverse);
}

.cta-band .btn-primary:hover {
  background: #10343a;
  border-color: #10343a;
}

.cta-band a.fine-print {
  color: #10343a;
}

/* ---------- Seitenkopf (Leistungsseiten) ---------- */

.page-head .lead {
  margin-top: var(--space-4);
  max-width: 72ch;
}

.page-head .btn {
  margin-top: var(--space-8);
}

/* ---------- Sprungmarken-Leiste ---------- */

.section-nav {
  background: var(--bg-base);
  border-bottom: 1px solid var(--border);
}

.section-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  list-style: none;
  margin: 0;
  padding: var(--space-3) var(--space-6);
  align-items: center;
}

.section-nav__list a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 15px;
}

.section-nav__list a:hover {
  color: var(--brand-teal);
}

/* Sticky ab Desktop. Die Zeile bleibt bewusst umbruchfähig (flex-wrap)
   statt auf eine feste 56px-Höhe mit nowrap gezwungen zu werden — bei
   vielen/langen Einträgen (z. B. 7 auf der Microsoft-365-Seite) würde
   nowrap sonst je nach Breite zu horizontalem Overflow der ganzen Seite
   führen (Verstoß gegen Kap. 5: kein horizontales Scrollen außerhalb von
   Tabellen). Auf üblichen Desktop-Breiten passt eine Zeile ohnehin. */
@media (min-width: 1024px) {
  .section-nav {
    position: sticky;
    top: var(--header-h, 80px);
    z-index: 40;
  }
}

/* ---------- Themenabschnitte ---------- */
/* Scroll-Margin mit Reserve für bis zu zwei Zeilen Sprungmarken-Leiste,
   falls diese bei sehr vielen Einträgen umbricht (siehe oben). */

.topic {
  scroll-margin-top: calc(var(--header-h, 80px) + var(--space-4));
}

@media (min-width: 1024px) {
  .topic {
    scroll-margin-top: calc(var(--header-h, 80px) + 100px);
  }
}

.topic .checklist {
  margin-top: var(--space-4);
}

/* ---------- Tabelle (Kap. 3.4) ---------- */

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 12px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table thead th {
  background: var(--bg-inverse);
  color: #ffffff;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.data-table tbody tr:nth-child(even) {
  background: var(--bg-subtle);
}

.data-table tbody td:first-child {
  font-weight: 500;
}

.data-table .is-check {
  color: var(--success);
  text-align: center;
}

/* ---------- Kontaktabschnitt (Unternehmen) ---------- */

.contact-block__email {
  display: inline-block;
  font-size: 24px;
  color: var(--brand-teal);
  text-decoration: none;
  margin-bottom: var(--space-4);
}

.contact-block__email:hover {
  text-decoration: underline;
}

.contact-block address {
  font-style: normal;
  color: var(--text-body);
}

/* ---------- Cookie-Banner & Cookie-Einstellungen ---------- */

.cookie-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 90;
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow-overlay);
  padding-block: var(--space-6);
}

.cookie-banner[hidden] {
  display: none;
}

.cookie-banner__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .cookie-banner__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
  }
}

.cookie-banner__text {
  margin: 0;
  color: var(--text-body);
  font-size: 15px;
  max-width: 65ch;
}

.cookie-banner__text a {
  color: var(--brand-teal);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  flex-shrink: 0;
}

.cookie-banner__actions .btn {
  height: 44px;
  padding-inline: var(--space-6);
}

.cookie-dialog {
  width: min(560px, calc(100vw - var(--space-8)));
  max-height: calc(100vh - var(--space-8));
  overflow-y: auto;
  border: none;
  border-radius: var(--radius-0);
  padding: var(--space-8);
  box-shadow: var(--shadow-overlay);
}

.cookie-dialog::backdrop {
  background: rgba(28, 32, 36, 0.5);
}

.cookie-dialog__title {
  margin-bottom: var(--space-4);
}

.cookie-dialog__intro {
  color: var(--text-body);
}

.cookie-category {
  padding-block: var(--space-4);
  border-top: 1px solid var(--border);
}

.cookie-category__label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
}

.cookie-category__label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--brand-teal);
  flex-shrink: 0;
}

.cookie-category__desc {
  margin: var(--space-2) 0 0;
  color: var(--text-body);
  font-size: 15px;
}

.cookie-dialog__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}