/* Heldmann KI – Buchungs-App
   Eigenes Stylesheet, identische Marken-Tokens wie ki.heldmann.cloud.
   Nur System-Schriften (kein Google-Fonts-CDN -> kein DSGVO-Problem). */

:root {
  --ink: #0f172a;
  --ink-soft: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --line-soft: #eef2f7;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-light: #60a5fa;
  --accent-tint: #eff6ff;
  --accent-glow: rgba(37, 99, 235, .18);
  --accent-glow-soft: rgba(37, 99, 235, .08);
  --grad-from: #2563eb;
  --grad-to: #7c3aed;
  --ok: #15803d;
  --ok-tint: #ecfdf5;
  --warn-bg: #fffbeb;
  --warn-line: #fde68a;
  --warn-ink: #78350f;
  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 880px;
  --shadow: 0 2px 4px rgba(15, 23, 42, .04), 0 16px 36px rgba(15, 23, 42, .06);
  --shadow-hover: 0 4px 8px rgba(15, 23, 42, .06), 0 24px 56px rgba(15, 23, 42, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg-alt);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3 { line-height: 1.2; color: var(--ink); margin: 0 0 .5em; font-weight: 700; letter-spacing: -.015em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); letter-spacing: -.025em; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; width: 100%; }

.eyebrow {
  font-size: .76rem; font-weight: 700; letter-spacing: .15em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 .8em;
  display: inline-flex; align-items: center; gap: 12px;
}
.eyebrow::before {
  content: ""; display: inline-block; width: 26px; height: 2px;
  background: var(--accent); border-radius: 2px;
}

/* ---- Header / Footer (wie Hauptseite) ---------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 18px; }
.brand { font-weight: 800; font-size: 1.05rem; letter-spacing: -.02em; color: var(--ink); white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand strong {
  font-weight: 800;
  background: linear-gradient(135deg, var(--grad-from) 0%, var(--grad-to) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.brand span { color: var(--muted); font-weight: 600; }
@media (max-width: 560px) { .brand span { display: none; } }
.back-link { font-size: .92rem; font-weight: 600; color: var(--ink-soft); white-space: nowrap; }
.back-link:hover { color: var(--accent); text-decoration: none; }

.site-footer { background: var(--ink); color: #cbd5e1; padding: 32px 0; font-size: .86rem; margin-top: auto; }
.site-footer a { color: #e2e8f0; }
.site-footer__inner { display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between; }
.site-footer__links { display: flex; gap: 20px; }

/* ---- Layout ------------------------------------------------------------ */
.booking-main { padding: 44px 0 64px; }
.booking-intro { max-width: 620px; margin: 0 auto 26px; text-align: center; }
.booking-intro .eyebrow { justify-content: center; }
.booking-intro__sub { font-size: 1.05rem; color: var(--ink-soft); margin: 0; }

/* ---- Banner ------------------------------------------------------------ */
.banner {
  max-width: var(--maxw); margin: 0 auto 20px;
  border-radius: var(--radius-sm); padding: 12px 18px; font-size: .92rem;
}
.banner--demo { background: var(--warn-bg); border: 1px solid var(--warn-line); color: var(--warn-ink); }

/* ---- Stepper ----------------------------------------------------------- */
.steps {
  list-style: none; display: flex; gap: 8px; padding: 0;
  margin: 0 auto 22px; max-width: 560px; counter-reset: step;
}
.steps[aria-hidden="true"] { display: none; }
.step { flex: 1; display: flex; align-items: center; gap: 10px; justify-content: center; }
.step__num {
  width: 28px; height: 28px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .85rem; font-weight: 700;
  background: #fff; border: 1.5px solid var(--line); color: var(--muted);
  transition: all .2s ease; flex-shrink: 0;
}
.step__label { font-size: .85rem; font-weight: 600; color: var(--muted); }
.step.is-active .step__num { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 4px 10px var(--accent-glow); }
.step.is-active .step__label { color: var(--ink); }
.step.is-done .step__num { background: var(--accent-tint); border-color: var(--accent); color: var(--accent); }
.step.is-done .step__label { color: var(--ink-soft); }
@media (max-width: 520px) { .step__label { display: none; } }

/* ---- Card -------------------------------------------------------------- */
.card {
  max-width: var(--maxw); margin: 0 auto; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 30px;
}
@media (max-width: 560px) { .card { padding: 22px 18px; } }
.card__head { margin-bottom: 22px; }
.card__head h2 { margin-bottom: .25em; }
.card__head p { margin: 0; font-size: .96rem; }

/* ---- Loading / spinner ------------------------------------------------- */
.loading { display: flex; align-items: center; gap: 12px; justify-content: center; color: var(--muted); padding: 40px 0; font-size: .95rem; }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid var(--line); border-top-color: var(--accent);
  display: inline-block; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Back link in card ------------------------------------------------- */
.step-back {
  background: none; border: none; cursor: pointer; padding: 0;
  color: var(--ink-soft); font-size: .9rem; font-weight: 600;
  margin-bottom: 16px; font-family: inherit;
}
.step-back:hover { color: var(--accent); }

/* ---- Meeting type cards ------------------------------------------------ */
.type-list { display: grid; gap: 14px; }
.type-card {
  text-align: left; width: 100%; cursor: pointer; font-family: inherit;
  background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; transition: transform .18s ease, box-shadow .2s ease, border-color .18s ease;
  display: flex; flex-direction: column; gap: 8px;
}
.type-card:hover { transform: translateY(-2px); border-color: var(--accent-light); box-shadow: var(--shadow); }
.type-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.type-card__top { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.type-card__name { font-weight: 700; font-size: 1.12rem; color: var(--ink); }
.type-card__summary { margin: 0; font-size: .95rem; color: var(--ink-soft); }
.type-card__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 2px; }
.type-card__go { color: var(--accent); font-weight: 700; font-size: .9rem; }

.badge {
  display: inline-flex; align-items: center; padding: 4px 11px;
  border-radius: 999px; font-size: .78rem; font-weight: 700;
  background: var(--accent-tint); color: var(--accent-dark);
}
.badge--soft { background: var(--bg-alt); color: var(--ink-soft); font-weight: 600; border: 1px solid var(--line); }

/* ---- Summary bar ------------------------------------------------------- */
.summary-bar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--accent-tint); border: 1px solid #dbeafe;
  border-radius: var(--radius-sm); padding: 12px 16px; margin-bottom: 22px;
  font-size: .92rem; color: var(--ink);
}
.summary-bar strong { font-weight: 700; }
.summary-bar .dot { color: var(--accent); }

/* ---- Timezone select --------------------------------------------------- */
.tz-row {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-bottom: 18px; font-size: .9rem; color: var(--muted);
}
.tz-row select {
  font-family: inherit; font-size: .9rem; padding: 6px 10px;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}

/* ---- Day strip --------------------------------------------------------- */
.day-strip {
  display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px;
  margin-bottom: 18px; scrollbar-width: thin;
}
.day-btn {
  flex: 0 0 auto; cursor: pointer; font-family: inherit;
  background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  padding: 10px 14px; text-align: center; min-width: 76px;
  transition: border-color .15s ease, background .15s ease, transform .15s ease;
}
.day-btn:hover { border-color: var(--accent-light); transform: translateY(-1px); }
.day-btn__dow { display: block; font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.day-btn__date { display: block; font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-top: 2px; }
.day-btn__mon { display: block; font-size: .74rem; color: var(--muted); }
.day-btn.is-active { background: var(--accent); border-color: var(--accent); box-shadow: 0 4px 12px var(--accent-glow); }
.day-btn.is-active .day-btn__dow,
.day-btn.is-active .day-btn__date,
.day-btn.is-active .day-btn__mon { color: #fff; }

/* ---- Time grid --------------------------------------------------------- */
.time-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(94px, 1fr)); gap: 10px;
}
.time-chip {
  cursor: pointer; font-family: inherit; font-size: .98rem; font-weight: 700;
  background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 8px; color: var(--ink-soft);
  transition: border-color .15s ease, color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.time-chip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); box-shadow: 0 4px 12px var(--accent-glow-soft); }
.time-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.empty-note {
  text-align: center; color: var(--muted); padding: 32px 16px;
  background: var(--bg-alt); border: 1px dashed var(--line); border-radius: var(--radius-sm);
}

/* ---- Form -------------------------------------------------------------- */
.field { margin-bottom: 18px; }
.field__label { display: block; font-weight: 600; font-size: .94rem; margin-bottom: 6px; color: var(--ink); }
.field__req { color: var(--accent); }
.field__hint { margin: -2px 0 8px; font-size: .84rem; line-height: 1.45; color: var(--muted); }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field select,
.field textarea {
  width: 100%; font-family: inherit; font-size: 1rem; color: var(--ink);
  padding: 11px 13px; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { min-height: 92px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow-soft);
}
.field--invalid input, .field--invalid select, .field--invalid textarea { border-color: #dc2626; }

.checkgroup { display: flex; flex-wrap: wrap; gap: 8px; }
.checkgroup label {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  border: 1.5px solid var(--line); border-radius: 999px; padding: 7px 14px;
  font-size: .92rem; font-weight: 600; color: var(--ink-soft);
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.checkgroup label:has(input:checked) { border-color: var(--accent); color: var(--accent-dark); background: var(--accent-tint); }
.checkgroup input { accent-color: var(--accent); }

.consent { display: flex; align-items: flex-start; gap: 10px; font-size: .9rem; color: var(--ink-soft); margin: 4px 0 20px; }
.consent input { margin-top: 3px; accent-color: var(--accent); flex-shrink: 0; }

/* ---- Buttons ----------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: var(--radius-sm); font-family: inherit;
  font-weight: 700; font-size: 1rem; cursor: pointer; border: 1.5px solid transparent;
  transition: transform .15s ease, background .15s ease, box-shadow .2s ease;
}
.btn--primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 6px var(--accent-glow), 0 10px 28px var(--accent-glow-soft);
}
.btn--primary:hover { background: var(--accent-dark); transform: translateY(-1px); text-decoration: none; }
.btn--primary:disabled { background: var(--muted); cursor: not-allowed; transform: none; box-shadow: none; }
.btn--ghost { background: #fff; color: var(--accent); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--accent); text-decoration: none; }
.btn--block { width: 100%; }
.btn--lg { padding: 16px 30px; font-size: 1.05rem; }

/* ---- Error message ----------------------------------------------------- */
.form-error {
  background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c;
  border-radius: var(--radius-sm); padding: 11px 15px; font-size: .92rem;
  margin-bottom: 16px;
}
.form-error[hidden] { display: none; }

/* ---- Confirmation ------------------------------------------------------ */
.confirm { text-align: center; padding: 14px 0; }
.confirm__check {
  width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 18px;
  background: var(--ok-tint); border: 2px solid var(--ok);
  display: flex; align-items: center; justify-content: center;
}
.confirm__check svg { width: 30px; height: 30px; }
.confirm h2 { margin-bottom: .3em; }
.confirm__detail {
  text-align: left; background: var(--bg-alt); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 18px 20px; margin: 22px auto;
  max-width: 460px;
}
.confirm__row { display: flex; gap: 12px; padding: 7px 0; font-size: .95rem; }
.confirm__row + .confirm__row { border-top: 1px solid var(--line-soft); }
.confirm__row span:first-child { color: var(--muted); min-width: 96px; }
.confirm__row span:last-child { color: var(--ink); font-weight: 600; }
.confirm__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.confirm__meet { word-break: break-all; }