/* ==========================================================================
   Components – Buttons, Header, Navigation, Badges, Mobile Call Bar
   ========================================================================== */

/* --- Buttons --- */
.btn {
  --btn-bg: var(--color-ink);
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95em 1.6em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border-radius: var(--radius-sm);
  transition:
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn .btn__icon {
  width: 1.15em;
  height: 1.15em;
}

.btn--primary {
  --btn-bg: var(--color-red);
  --btn-fg: #fff;
  box-shadow: var(--shadow-red);
}

.btn--primary:hover {
  --btn-bg: var(--color-red-deep);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: currentColor;
  border: 1.5px solid currentColor;
  box-shadow: none;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
}

.btn--on-light.btn--ghost {
  border-color: var(--color-text);
}

.btn--on-light.btn--ghost:hover {
  background: rgba(10, 11, 13, 0.06);
}

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

/* --- Header --- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(10, 11, 13, 0.0);
  border-bottom: 1px solid transparent;
  transition:
    background var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    backdrop-filter var(--duration-normal) var(--ease-out);
}

.site-header::before {
  /* dünne rote Akzentlinie oben */
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--color-red);
}

.site-header.is-scrolled {
  background: rgba(10, 11, 13, 0.92);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-graphite);
}

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

/* --- Logo / Brandmark Platzhalter --- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
}

.brand__mark {
  width: 42px;
  height: 42px;
  flex: none;
}

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

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand__sub {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.66rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--color-red);
}

/* --- Desktop Nav --- */
.primary-nav {
  display: none;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}

.primary-nav a {
  position: relative;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-invert-muted);
  padding-block: 0.4rem;
  transition: color var(--duration-fast) var(--ease-out);
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.primary-nav a:hover,
.primary-nav a.is-active {
  color: #fff;
}

.primary-nav a:hover::after,
.primary-nav a.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-call {
  display: none;
}

/* --- Burger --- */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0 11px;
  border: 1px solid var(--color-graphite);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  transition: transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

.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);
}

/* --- Mobile Overlay Menü --- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: grid;
  grid-template-rows: var(--header-h) 1fr auto;
  background: var(--color-ink);
  color: #fff;
  transform: translateY(-100%);
  visibility: hidden;
  transition:
    transform var(--duration-slow) var(--ease-out-expo),
    visibility 0s linear var(--duration-slow);
}

.mobile-menu.is-open {
  transform: translateY(0);
  visibility: visible;
  transition:
    transform var(--duration-slow) var(--ease-out-expo),
    visibility 0s;
}

.mobile-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--gutter);
  border-bottom: 1px solid var(--color-graphite);
}

.mobile-menu__close {
  font-size: 2rem;
  line-height: 1;
  width: 46px;
  height: 46px;
  color: #fff;
}

.mobile-menu nav {
  align-self: center;
  padding-inline: var(--gutter);
}

.mobile-menu nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mobile-menu nav a {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 9vw, 2.8rem);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  padding-block: 0.35rem;
}

.mobile-menu nav a span {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-red);
}

.mobile-menu__foot {
  padding: var(--space-md) var(--gutter) calc(var(--space-md) + env(safe-area-inset-bottom));
  border-top: 1px solid var(--color-graphite);
  display: grid;
  gap: var(--space-xs);
}

.mobile-menu__foot a:not(.btn) {
  color: var(--color-text-invert-muted);
  font-size: 0.95rem;
}

/* --- Mobile Sticky Call Bar --- */
.call-bar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: var(--z-mobilebar);
  display: flex;
  gap: 0;
  background: var(--color-ink);
  border-top: 2px solid var(--color-red);
  padding-bottom: env(safe-area-inset-bottom);
  transform: translateY(120%);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.call-bar.is-visible {
  transform: translateY(0);
}

.call-bar a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 1.05em 0.5em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
}

.call-bar a svg {
  width: 1.2em;
  height: 1.2em;
}

.call-bar a.call-bar__phone {
  background: var(--color-red);
}

.call-bar a.call-bar__route {
  border-left: 1px solid var(--color-graphite);
}

@media (min-width: 980px) {
  .nav-toggle { display: none; }
  .primary-nav { display: block; }
  .header-call { display: inline-flex; }
  .call-bar { display: none; }
}