/* ==========================================================================
   AI BRIDGE PARTNERS — components.css
   Preloader, Cursor, Buttons, Leistungs-Akkordeon, Cases, FAQ, Formular.
   ========================================================================== */

/* ---------- Preloader ---------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: var(--ink-900);
}
.preloader__inner {
  width: min(90vw, 26rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
}
.preloader__mark {
  position: relative;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
}
.preloader__ring {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--hair-strong);
  border-top-color: var(--blue-400);
  border-radius: 50%;
  animation: spin 1.1s linear infinite;
}
.preloader__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-400);
}
@keyframes spin { to { transform: rotate(360deg); } }

.preloader__meta {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.preloader__count { color: var(--blue-200); font-variant-numeric: tabular-nums; }
.preloader__count i { font-style: normal; opacity: 0.5; }

.preloader__bar {
  width: 100%;
  height: 1px;
  background: var(--hair);
  overflow: hidden;
}
.preloader__bar span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--blue-400);
}

/* ---------- Cursor ---------- */
.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: 150;
  pointer-events: none;
  mix-blend-mode: difference;
  opacity: 0;
  transition: opacity 0.3s linear;
}
.cursor.is-active { opacity: 1; }
.cursor__dot, .cursor__ring {
  position: absolute;
  top: 0; left: 0;
  border-radius: 50%;
  will-change: transform;
}
.cursor__dot {
  width: 6px; height: 6px;
  margin: -3px 0 0 -3px;
  background: #fff;
}
.cursor__ring {
  width: 38px; height: 38px;
  margin: -19px 0 0 -19px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  display: grid;
  place-items: center;
  transition: width 0.35s var(--ease), height 0.35s var(--ease),
              margin 0.35s var(--ease), background-color 0.35s var(--ease),
              border-color 0.35s var(--ease);
}
.cursor__ring em {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-style: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-900);
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 0.25s linear, transform 0.35s var(--ease);
}
.cursor.is-hover .cursor__ring {
  width: 74px; height: 74px;
  margin: -37px 0 0 -37px;
  background: #fff;
  border-color: #fff;
}
.cursor.is-hover .cursor__dot { opacity: 0; }
.cursor.is-hover .cursor__ring em { opacity: 1; transform: scale(1); }

@media (hover: none), (pointer: coarse) {
  .cursor { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  --btn-fg: var(--fg);
  --btn-bg: transparent;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.7rem;
  border-radius: 99px;
  border: 1px solid var(--hair-strong);
  color: var(--btn-fg);
  background: var(--btn-bg);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  overflow: hidden;
  isolation: isolate;
  transition: color 0.4s var(--ease), border-color 0.4s var(--ease);
  will-change: transform;
}
.btn > span { position: relative; z-index: 2; }
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--blue-400);
  transform: translateY(101%);
  transition: transform 0.55s var(--ease);
}
.btn:hover::before { transform: translateY(0); }
.btn:hover { color: var(--ink-900); border-color: var(--blue-400); }

.btn--primary {
  background: var(--blue-400);
  border-color: var(--blue-400);
  color: var(--ink-900);
}
.btn--primary::before { background: var(--blue-100); }
.btn--primary:hover { color: var(--ink-900); border-color: var(--blue-100); }

.btn--line { border-color: var(--hair-strong); }

.btn--sm { padding: 0.65rem 1.25rem; font-size: 0.83rem; }

.btn--dark {
  border-color: rgba(238, 241, 247, 0.25);
  color: var(--paper);
}
.btn--dark::before { background: var(--blue-300); }

.theme-light .btn { border-color: var(--hair-dark); color: var(--fg-on-paper); }
.theme-light .btn:hover { color: var(--ink-900); }

/* ---------- Reveal-Grundzustände (JS setzt sie zurück) ---------- */
.reveal-fade, .reveal-card { will-change: transform, opacity; }
html.js .reveal-fade { opacity: 0; transform: translateY(18px); }
html.js .reveal-card { opacity: 0; transform: translateY(34px); }
html.js .line__i { transform: translateY(105%); }
html.no-anim .reveal-fade,
html.no-anim .reveal-card { opacity: 1; transform: none; }
html.no-anim .line__i { transform: none; }

/* ---------- Leistungen: Akkordeon ---------- */
.services__list { border-top: 1px solid var(--hair); }
.service { border-bottom: 1px solid var(--hair); }

.service__head {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(0.9rem, 2vw, 1.8rem);
  padding: clamp(1.4rem, 2.6vw, 2.1rem) 0;
  text-align: left;
}
.service__head::after {
  content: "";
  position: absolute;
  left: -1.5rem; right: -1.5rem; top: 0; bottom: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(76, 141, 255, 0.09), transparent 70%);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  border-radius: var(--radius);
}
.service.is-active .service__head::after { opacity: 1; }

.service__num {
  color: var(--fg-mute);
  transition: color 0.4s var(--ease);
}
.service.is-active .service__num { color: var(--blue-400); }

.service__title {
  font-size: clamp(1.6rem, 4vw, 3.1rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--fg-dim);
  transition: color 0.4s var(--ease), transform 0.6s var(--ease);
}
.service.is-active .service__title,
.service.is-open .service__title { color: var(--fg); }
.service.is-active .service__title { transform: translateX(0.5rem); }

.service__plus {
  position: relative;
  width: 34px; height: 34px;
  border: 1px solid var(--hair-strong);
  border-radius: 50%;
  flex: none;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease), transform 0.5s var(--ease);
}
.service__plus::before,
.service__plus::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 11px; height: 1.5px;
  margin: -0.75px 0 0 -5.5px;
  background: currentColor;
  transition: transform 0.45s var(--ease), opacity 0.3s linear;
}
.service__plus::after { transform: rotate(90deg); }
.service.is-open .service__plus { background: var(--blue-400); border-color: var(--blue-400); color: var(--ink-900); }
.service.is-open .service__plus::after { transform: rotate(0deg); opacity: 0; }

.service__body { height: 0; overflow: hidden; }
.service.is-open .service__body { height: auto; }
.service__body-i { padding: 0 0 clamp(1.6rem, 3vw, 2.4rem); max-width: 56ch; }
.service__body-i > p { color: var(--fg-dim); }

.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin: 1.4rem 0; }
.chips li {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--hair);
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}
.service.is-open .chips li:hover { border-color: var(--blue-500); color: var(--blue-200); }

.service__metric {
  padding-top: 1.1rem;
  border-top: 1px solid var(--hair);
  font-size: 0.9rem;
  color: var(--fg-dim);
}
.service__metric span {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--blue-200);
  margin-right: 0.4rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- Cases ---------- */
.case {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: rgba(8, 12, 22, 0.62);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.6s var(--ease), background-color 0.5s var(--ease);
}
.case:hover {
  border-color: var(--hair-strong);
  background: rgba(13, 20, 36, 0.8);
  transform: translateY(-6px);
}
.case__visual {
  aspect-ratio: 5 / 3;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--hair);
  background:
    radial-gradient(70% 90% at 50% 110%, rgba(47, 110, 224, 0.22), transparent 70%),
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(148, 176, 226, 0.055) 23px 24px),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(148, 176, 226, 0.055) 23px 24px);
  color: var(--blue-300);
}
.case__visual svg { width: 100%; }
.case__visual path, .case__visual rect, .case__visual circle {
  stroke: currentColor;
  stroke-width: 1.25;
  vector-effect: non-scaling-stroke;
}
.case__ring { opacity: 0.55; }
.case__wave path { fill: none; }
.case__net circle { fill: var(--ink-800); }
.case__bars rect { fill: rgba(76, 141, 255, 0.14); }
.case__trend { stroke-dasharray: 4 5; opacity: 0.7; }

.case__wave path,
.case__trend { transition: transform 0.8s var(--ease); transform-origin: center; }
.case:hover .case__wave path { transform: scaleY(1.5); }
.case:hover .case__trend { transform: translate(4px, -4px); }
.case__net path { transition: opacity 0.6s var(--ease); }
.case:hover .case__net path { opacity: 0.55; }
.case__bars rect { transition: transform 0.6s var(--ease); transform-origin: 50% 100%; }
.case:hover .case__bars rect { transform: scaleY(1.14); }

.case__body {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: clamp(1.4rem, 2.4vw, 1.9rem);
  flex: 1;
}
.case__cat { color: var(--blue-400); }
.case__body h3 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.case__desc { color: var(--fg-dim); font-size: 0.925rem; }
.case__metric {
  margin-top: auto;
  padding-top: 1.1rem;
  border-top: 1px solid var(--hair);
  font-size: 0.85rem;
  color: var(--fg-mute);
}
.case__metric strong {
  display: block;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  color: var(--blue-100);
  margin-bottom: 0.2rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- FAQ ---------- */
.faq__list { border-top: 1px solid var(--hair); }
.qa { border-bottom: 1px solid var(--hair); }
.qa__head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.2rem, 2.2vw, 1.7rem) 0;
  text-align: left;
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--fg-dim);
  transition: color 0.35s var(--ease);
}
.qa__head:hover, .qa.is-open .qa__head { color: var(--fg); }
.qa__plus {
  position: relative;
  flex: none;
  width: 15px; height: 15px;
  color: var(--blue-400);
}
.qa__plus::before, .qa__plus::after {
  content: "";
  position: absolute;
  top: 50%; left: 0;
  width: 100%; height: 1.5px;
  margin-top: -0.75px;
  background: currentColor;
  transition: transform 0.45s var(--ease);
}
.qa__plus::after { transform: rotate(90deg); }
.qa.is-open .qa__plus::after { transform: rotate(0); }
.qa__body { height: 0; overflow: hidden; }
.qa__body-i { padding-bottom: clamp(1.2rem, 2.2vw, 1.7rem); max-width: 60ch; }
.qa__body-i p { color: var(--fg-dim); font-size: 0.95rem; }

/* ---------- Formular ---------- */
.form {
  display: grid;
  gap: 1.4rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: rgba(8, 12, 22, 0.66);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.form__row { display: grid; gap: 1.4rem; }
@media (min-width: 560px) { .form__row { grid-template-columns: 1fr 1fr; } }

.field { display: grid; gap: 0.5rem; }
.field label, .field legend {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-mute);
}
.field input, .field textarea {
  width: 100%;
  padding: 0.85rem 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--hair-strong);
  border-radius: 0;
  font-size: 1rem;
  transition: border-color 0.35s var(--ease);
}
.field textarea { resize: vertical; min-height: 5rem; }
.field input::placeholder, .field textarea::placeholder { color: var(--fg-mute); opacity: 0.7; }
.field input:focus, .field textarea:focus {
  outline: none;
  border-bottom-color: var(--blue-400);
}
.field.has-error input, .field.has-error textarea { border-bottom-color: #ff6b6b; }
.field__error {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: #ff8f8f;
  min-height: 0;
}

.field--chips { gap: 0.75rem; }
.pickers { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.picker input { position: absolute; opacity: 0; pointer-events: none; }
.picker span {
  display: inline-block;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--hair);
  border-radius: 99px;
  font-size: 0.83rem;
  color: var(--fg-dim);
  cursor: pointer;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.picker span:hover { border-color: var(--hair-strong); color: var(--fg); }
.picker input:checked + span {
  background: rgba(76, 141, 255, 0.14);
  border-color: var(--blue-500);
  color: var(--blue-100);
}
.picker input:focus-visible + span { outline: 2px solid var(--blue-300); outline-offset: 2px; }

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  padding-top: 0.5rem;
}
.form__hint { flex: 1; min-width: 12rem; }

.form__success {
  display: grid;
  gap: 0.6rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--blue-600);
  border-radius: var(--radius);
  background: rgba(27, 75, 171, 0.14);
}
.form__success-title { font-size: 1.15rem; font-weight: 500; letter-spacing: -0.02em; color: var(--blue-100); }
.form__success p { color: var(--fg-dim); font-size: 0.95rem; }
.form__success-note { color: var(--fg-mute); }
.form__success-note code {
  font-family: var(--font-mono);
  color: var(--blue-300);
  text-transform: none;
  letter-spacing: 0;
}
.form.is-sent > *:not(.form__success) { display: none; }

/* ---------- Einwilligung ---------- */
.field--consent { margin-top: 0.4rem; }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--fg-dim);
  cursor: pointer;
}
.consent input {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 0.15rem;
  accent-color: var(--blue-400);
  cursor: pointer;
}
.consent a {
  color: var(--blue-300);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.consent a:hover { color: var(--blue-200); }
.field--consent.has-error .consent { color: var(--fg); }