/* ==========================================================================
   Southframe — Components
   Wiederverwendbare UI-Bausteine: Buttons, Header, Mobile-Navigation.
   Mobile First.
   ========================================================================== */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  border: 1px solid transparent;
  transition:
    transform var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

.btn__icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.btn:hover .btn__icon {
  transform: translateX(4px);
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: #000;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-text);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.btn--accent:hover {
  filter: brightness(1.06);
}

/* Auf Dark Sections invertierte Sekundär-Variante */
.section--dark .btn--secondary {
  color: var(--color-dark-text);
  border-color: var(--color-dark-border);
}

.section--dark .btn--secondary:hover {
  border-color: var(--color-dark-text);
}

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

/* ---------------------------------------------------------------------------
   Header
   ------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--duration-medium) var(--ease-standard),
    border-color var(--duration-medium) var(--ease-standard),
    box-shadow var(--duration-medium) var(--ease-standard);
}

/* Scroll-State wird per JS gesetzt (siehe main.js) — rein additiv,
   Grundzustand funktioniert auch ohne JavaScript. */
.site-header.is-scrolled {
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.2em;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.logo__dot {
  color: var(--color-accent);
  font-size: 1.1em;
  line-height: 0;
}

.site-nav {
  display: none;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-nav__link {
  font-size: 0.9375rem;
  /* Sprint 3.5: 600 statt 500 — es werden bewusst nur 400/600/700 als
     WOFF2 geladen (Brief §16: "möglichst wenige Dateien"). Bei 500 ohne
     passenden Schnitt entscheidet der Browser selbst, welcher Schnitt
     am nächsten liegt — hier stattdessen explizit auf den tatsächlich
     geladenen Schnitt gemappt. */
  font-weight: 600;
  color: var(--color-text);
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--color-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
}

.header-cta {
  display: none;
}

/* Hamburger-Button */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-inline-end: calc(var(--space-2xs) * -1);
  border-radius: var(--radius-sm);
}

.nav-toggle__icon {
  position: relative;
  width: 20px;
  height: 14px;
}

.nav-toggle__icon span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition:
    transform var(--duration-medium) var(--ease-standard),
    opacity var(--duration-medium) var(--ease-standard),
    top var(--duration-medium) var(--ease-standard);
}

.nav-toggle__icon span:nth-child(1) {
  top: 0;
}

.nav-toggle__icon span:nth-child(2) {
  top: 6px;
}

.nav-toggle__icon span:nth-child(3) {
  top: 12px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------------------------
   Mobile Navigation (Fullscreen-Overlay)
   ------------------------------------------------------------------------- */

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-nav);
  background: var(--color-dark);
  color: var(--color-dark-text);
  display: flex;
  flex-direction: column;
  padding: var(--edge-padding);
  padding-top: calc(var(--header-height) + var(--space-sm));
  /* Sprint 3.5 (Härtung): Bei sehr niedrigen Viewports (z. B. Mobile
     Querformat) könnten 6 große Nav-Links + CTA + neuer Claim (§40) den
     verfügbaren Platz überschreiten. overflow-y statt harter Kürzung. */
  overflow-y: auto;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform var(--duration-medium) var(--ease-standard),
    opacity var(--duration-medium) var(--ease-standard),
    visibility 0s linear var(--duration-medium);
}

.mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  transition:
    transform var(--duration-medium) var(--ease-standard),
    opacity var(--duration-medium) var(--ease-standard),
    visibility 0s linear 0s;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: auto;
}

.mobile-nav__link {
  display: block;
  font-size: clamp(1.75rem, 8vw, 2.25rem);
  font-weight: 700;
  letter-spacing: var(--ls-tight);
  padding-block: var(--space-2xs);
}

.mobile-nav__cta {
  margin-top: var(--space-lg);
}

/* Sprint 3.5: Claim + Goldlinie am unteren Menürand (Brief §40) —
   nutzt dieselben Tokens wie .eyebrow, ist aber kein Label über einem
   Inhalt, daher eigene (kleine) Klasse statt .eyebrow zweckzuentfremden. */
.mobile-nav__claim {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-dark-muted);
}

.mobile-nav__claim::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* Body Scroll Lock (Klasse wird per JS gesetzt) */
body.nav-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav {
    transition: opacity var(--duration-fast) linear, visibility 0s;
    transform: none;
  }

  .mobile-nav.is-open {
    transition: opacity var(--duration-fast) linear, visibility 0s;
  }
}

/* ---------------------------------------------------------------------------
   Cards (generische Card-Basis, für Sprint 2 vorbereitet)
   ------------------------------------------------------------------------- */

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition:
    transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard);
}

@media (hover: hover) {
  .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-text);
  }
}

.section--dark .card {
  background: var(--color-dark-card);
  border-color: var(--color-dark-border);
}

/* ---------------------------------------------------------------------------
   Icon-Container (wiederverwendet in Benefit- und Service-Cards)
   ------------------------------------------------------------------------- */

.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  color: var(--color-text);
  flex-shrink: 0;
}

.icon-box svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.section--dark .icon-box {
  background: var(--color-dark-card);
  color: var(--color-dark-text);
}

/* ---------------------------------------------------------------------------
   Benefit-Card ("Warum Southframe")
   ------------------------------------------------------------------------- */

.benefit-card {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.benefit-card__icon {
  margin-bottom: var(--space-2xs);
}

.benefit-card__title {
  margin-bottom: var(--space-3xs);
}

.benefit-card__text {
  color: var(--color-muted);
  font-size: var(--fs-small);
  line-height: var(--lh-body);
}

/* Hover nur auf Geräten mit echtem Hover (Maus/Trackpad) — nicht auf
   Touch erzwingen, siehe Brief §Card Styling. */
@media (hover: hover) and (pointer: fine) {
  .benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-text);
    transition-duration: 220ms;
  }
}

/* ---------------------------------------------------------------------------
   Service-Card ("Leistungen")
   ------------------------------------------------------------------------- */

.service-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs);
  padding: 1.25rem;
  min-height: 96px;
  justify-content: center;
}

.service-card__icon {
  color: var(--color-muted);
  transition: color var(--duration-fast) var(--ease-standard);
}

.service-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.3;
}

/* Kernleistungen: visuell leicht hervorgehoben (Brief §Leistungsstruktur) */
.service-card--core {
  border-color: var(--color-text);
  background: var(--color-bg);
}

.service-card--core .service-card__icon {
  color: var(--color-accent);
}

/* SEO: zusätzlich leicht betont (eine Stufe über den übrigen Kernleistungen) */
.service-card--emphasis {
  box-shadow: var(--shadow-card);
}

@media (hover: hover) and (pointer: fine) {
  .service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-text);
  }

  .service-card:hover .service-card__icon {
    color: var(--color-accent);
  }
}

/* ---------------------------------------------------------------------------
   Platform-Score (qualitative Bewertungsbalken)
   ------------------------------------------------------------------------- */

.platform-score__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xs);
  font-size: var(--fs-small);
}

.platform-score__header span {
  color: var(--color-dark-muted);
}

.platform-score__header strong {
  color: var(--color-dark-text);
  font-weight: 600;
}

.platform-score__track {
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-dark-border);
  overflow: hidden;
}

.platform-score__bar {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
}

/* Füllstand ausschließlich über data-score gesteuert — die Werte sind
   interne Gestaltungshilfen, keine im UI sichtbaren Prozentangaben
   (Brief §Bewertungslogik: "dürfen NICHT als Prozentwerte erscheinen"). */
.platform-score[data-score="very-low"] .platform-score__bar {
  width: 20%;
}

.platform-score[data-score="low"] .platform-score__bar {
  width: 35%;
}

.platform-score[data-score="medium"] .platform-score__bar {
  width: 55%;
}

.platform-score[data-score="medium-high"] .platform-score__bar {
  width: 65%;
}

.platform-score[data-score="high"] .platform-score__bar {
  width: 75%;
}

.platform-score[data-score="very-high"] .platform-score__bar {
  width: 95%;
}

/* ---------------------------------------------------------------------------
   Pros/Cons-Card
   ------------------------------------------------------------------------- */

.pros-cons-card__title {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.pros-cons-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.pros-cons-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2xs);
  font-size: var(--fs-small);
  color: var(--color-dark-text);
  line-height: 1.5;
}

.pros-cons-card__list svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.pros-cons-card--pros svg {
  color: var(--color-success);
}

.pros-cons-card--cons svg {
  color: var(--color-dark-muted);
}

/* ---------------------------------------------------------------------------
   Arrow-Link (heller Kontext) — bewusst als eigene, kontextunabhängige
   Komponente statt .platform-cta wiederzuverwenden: .platform-cta ist
   fest auf Dark-Section-Farben verdrahtet und bereits live im Einsatz.
   Ein Refactor auf eine gemeinsame Basis wäre möglich, birgt aber
   unnötiges Risiko für eine bereits verifizierte, produktive Section
   (siehe README, „Technische Schulden"). arrow-link nutzt stattdessen
   `color: inherit`, funktioniert dadurch automatisch in jedem Kontext.
   ------------------------------------------------------------------------- */

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-weight: 600;
  color: inherit;
}

.arrow-link__icon {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.arrow-link:hover .arrow-link__icon {
  transform: translateX(4px);
}

/* ---------------------------------------------------------------------------
   Check-List (Leistungspunkte in Pricing-/Addon-Cards, heller Kontext)
   ------------------------------------------------------------------------- */

.check-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2xs);
  font-size: var(--fs-small);
  color: var(--color-text);
  line-height: 1.5;
}

.check-list svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Auf dem hervorgehobenen (dunklen) Business-Paket ist der Textkontext
   dunkel — Checks und Text entsprechend umfärben, statt eine zweite
   Komponente zu bauen. */
.pricing-card--featured .check-list li {
  color: var(--color-dark-text);
}

/* ---------------------------------------------------------------------------
   Pricing-Card
   ------------------------------------------------------------------------- */

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
}

.pricing-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.pricing-card__name {
  font-size: var(--fs-h3);
  font-weight: 600;
}

.pricing-card__badge {
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  white-space: nowrap;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-2xs);
  margin-bottom: var(--space-sm);
}

.pricing-card__amount {
  font-size: var(--fs-price);
  font-weight: 700;
  letter-spacing: var(--ls-tight);
  line-height: 1;
}

.pricing-card__unit {
  color: var(--color-muted);
  font-size: var(--fs-small);
}

.pricing-card__desc {
  color: var(--color-muted);
  font-size: var(--fs-small);
  margin-bottom: var(--space-md);
}

.pricing-card__divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
}

.pricing-card__features {
  margin-bottom: var(--space-lg);
  flex-grow: 1;
}

.pricing-card__cta {
  margin-top: auto;
}

/* Business-Paket: hervorgehoben, aber zurückhaltend (Brief: "nicht
   übertrieben, keine starken Glow-Effekte"). */
.pricing-card--featured {
  background: var(--color-dark);
  border-color: var(--color-dark-border);
  color: var(--color-dark-text);
}

.pricing-card--featured .pricing-card__name,
.pricing-card--featured .pricing-card__amount {
  color: var(--color-dark-text);
}

.pricing-card--featured .pricing-card__unit,
.pricing-card--featured .pricing-card__desc {
  color: var(--color-dark-muted);
}

.pricing-card--featured .pricing-card__divider {
  border-top-color: var(--color-dark-border);
}

@media (hover: hover) and (pointer: fine) {
  .pricing-card:not(.pricing-card--featured):hover {
    transform: translateY(-3px);
    border-color: var(--color-text);
    box-shadow: var(--shadow-card-hover);
  }

  .pricing-card--featured:hover {
    box-shadow: var(--shadow-lg);
  }
}

/* ---------------------------------------------------------------------------
   Addon-Card (Zusatzleistungen — bewusst leichter als Pricing-Card)
   ------------------------------------------------------------------------- */

.addon-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}

.addon-card__name {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: var(--space-3xs);
}

.addon-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-2xs);
  margin-bottom: var(--space-2xs);
}

.addon-card__amount {
  font-size: 1.5rem;
  font-weight: 700;
}

.addon-card__unit {
  color: var(--color-muted);
  font-size: var(--fs-small);
}

.addon-card__desc {
  color: var(--color-muted);
  font-size: var(--fs-small);
  margin-bottom: var(--space-sm);
}

.addon-card__features {
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

.addon-card__cta {
  margin-top: auto;
}

@media (hover: hover) and (pointer: fine) {
  .addon-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-text);
    box-shadow: var(--shadow-card-hover);
  }
}