/* ==========================================================================
   Queen's Gambit Zürich · Kids Chess workshop registration page
   Loaded only on /kids/<workshop>/ pages, after the site styles. Uses the
   site palette (Blue, Indigo & Ice) with the Kids Chess yellow as a subtle
   highlight. Form fields reuse .reg-* from css/features.css.
   ========================================================================== */

:root {
  --kids-yellow: #FFF0B3;        /* Kids Chess pastel yellow */
  --kids-yellow-strong: #FDD61F; /* Kids Chess yellow */
  --kids-yellow-soft: #FFF8D6;
}

.kreg { padding-block: clamp(2rem, 6vw, 4.5rem) clamp(3rem, 8vw, 6rem); }
.kreg__inner { display: grid; gap: clamp(1.5rem, 4vw, 2.5rem); max-width: 760px; }

/* ---------- Header ---------- */
.kreg__head { display: grid; gap: .9rem; }
.kreg__title {
  font-size: clamp(2rem, 6vw + .5rem, 3.4rem);
  line-height: 1;
  letter-spacing: var(--track-tight);
  text-transform: uppercase;
}
.kreg__title::after {               /* small yellow underline accent */
  content: ""; display: block; width: 3.25rem; height: 6px; margin-top: .8rem;
  border-radius: 99px; background: var(--kids-yellow-strong);
}
.kreg__lead { font-size: var(--fs-lead); max-width: 40rem; color: var(--muted); }
.kreg__facts {
  display: grid; gap: .6rem; margin: .4rem 0 0;
  grid-template-columns: 1fr 1fr;
}
.kreg__facts > div:nth-child(2) { grid-column: 1 / -1; }   /* location: full width */
@media (min-width: 720px) {
  .kreg__facts { grid-template-columns: auto 1fr; }
  .kreg__facts > div:nth-child(2) { grid-column: auto; }
}
.kreg__facts > div {
  display: grid; gap: .15rem; padding: .8rem 1rem;
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
  border-radius: var(--g-radius-sm); box-shadow: var(--glass-shadow);
}
.kreg__facts dt { font-size: var(--fs-label); letter-spacing: var(--track-label); text-transform: uppercase; color: var(--muted); font-weight: 600; }
.kreg__facts dd { margin: 0; font-weight: 600; }

/* ---------- Panel ---------- */
.kreg__panel {
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(30, 64, 175, .12), inset 0 1px 0 #fff;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  -webkit-backdrop-filter: blur(var(--glass-blur)); backdrop-filter: blur(var(--glass-blur));
}
.kreg-form { gap: 1.75rem; margin-top: 0; }
.kreg__closed { margin: 0; }

/* ---------- Steps ---------- */
.kreg-step { border: 0; margin: 0; padding: 0; min-width: 0; display: grid; gap: .9rem; }
.kreg-step + .kreg-step { padding-top: 1.75rem; border-top: 1px solid var(--rule); }
.kreg-step__title { display: flex; align-items: center; gap: .65rem; padding: 0; font-weight: 700; font-size: 1.1rem; }
.kreg-step__num {
  display: inline-grid; place-items: center; width: 1.85rem; height: 1.85rem; flex: none;
  border-radius: 50%; background: var(--g-blue); color: #fff; font-size: .9rem; font-weight: 700;
}
.kreg-step__hint { margin: -.35rem 0 0; color: var(--muted); font-size: var(--fs-small); }
.kreg-grid { display: grid; gap: .9rem 1rem; }
@media (min-width: 640px) { .kreg-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Session cards ---------- */
.kreg-sessions { display: grid; gap: .65rem; }
.kreg-sessions[aria-invalid="true"] .kreg-session { border-color: #B3261E; }
.kreg-session {
  position: relative;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .9rem;
  padding: .9rem 1rem; min-height: 64px;
  background: #fff; border: 1.5px solid rgba(57, 73, 171, .18); border-radius: 16px;
  cursor: pointer; transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease;
}
.kreg-session:hover { border-color: var(--g-blue); }
.kreg-session input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.kreg-session__tick {
  display: grid; place-items: center; width: 26px; height: 26px; border-radius: 8px;
  border: 1.5px solid rgba(57, 73, 171, .35); background: #fff; color: transparent;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.kreg-session__text { display: grid; gap: .1rem; min-width: 0; }
.kreg-session__date { font-weight: 700; }
.kreg-session__meta { color: var(--muted); font-size: var(--fs-small); }
.kreg-session.is-selected { border-color: var(--g-blue); background: var(--kids-yellow-soft); box-shadow: 0 0 0 3px rgba(253, 214, 31, .35); }
.kreg-session.is-selected .kreg-session__tick { background: var(--g-blue); border-color: var(--g-blue); color: #fff; }
.kreg-session:has(input:focus-visible) { outline: 3px solid rgba(0, 112, 180, .45); outline-offset: 2px; }
.kreg-session.is-full { background: rgba(255, 255, 255, .7); border-style: dashed; }
.kreg-session.is-full .kreg-session__date, .kreg-session.is-full .kreg-session__meta, .kreg-session.is-full .kreg-session__price { opacity: .65; }
.kreg-session.is-full.is-selected { background: var(--g-lavender); box-shadow: 0 0 0 3px rgba(57, 73, 171, .18); }
.kreg-session__price { font-weight: 700; color: var(--g-blue); white-space: nowrap; }
.kreg-session__badge {
  justify-self: start; margin-top: .3rem;
  font-size: var(--fs-label); font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: .3rem .6rem; border-radius: 99px; background: var(--g-lavender); color: var(--g-indigo);
}
.kreg-summary {
  display: grid; gap: .35rem; margin: 0; padding: .9rem 1rem; border-radius: 16px;
  background: var(--kids-yellow-soft); border: 1px solid var(--kids-yellow); color: var(--g-ink);
}
.kreg-summary__total { margin: 0; font-weight: 700; font-size: 1.05rem; }
.kreg-summary__inc-title { margin: .2rem 0 0; font-size: var(--fs-small); font-weight: 600; color: var(--muted); }
.kreg-summary__inc { margin: 0; padding-left: 1.15rem; display: grid; gap: .2rem; font-size: var(--fs-small); }
.kreg-summary__note { list-style: none; margin-left: -1.15rem; color: var(--muted); font-style: italic; }
.kreg-waitlist {
  margin: 0; padding: .8rem 1rem; border-radius: 14px; font-size: var(--fs-small);
  background: var(--g-lavender); border-left: 4px solid var(--g-indigo); color: var(--g-ink);
}
.kreg-paynote { margin: 0; font-size: var(--fs-small); color: var(--muted); }
.kreg-total { margin: 0; font-weight: 700; font-size: 1.15rem; }

/* ---------- What's included ---------- */
.kreg-inc { display: grid; gap: .9rem; }
.kreg-inc__title { font-size: clamp(1.25rem, 1.2vw + 1rem, 1.6rem); }
.kreg-inc__grid { display: grid; gap: .75rem; }
@media (min-width: 720px) { .kreg-inc__grid { grid-template-columns: 1fr 1fr 1.2fr; } }
.kreg-inc__card {
  display: grid; gap: .5rem; align-content: start; padding: 1rem 1.1rem;
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
  border-radius: var(--g-radius-sm); box-shadow: var(--glass-shadow);
}
.kreg-inc__card h3 { font-size: 1rem; text-transform: none; letter-spacing: 0; font-family: var(--font-body); font-weight: 700; }
.kreg-inc__card ul { margin: 0; padding-left: 1.1rem; display: grid; gap: .25rem; font-size: var(--fs-small); }
.kreg-inc__card--package { background: var(--kids-yellow-soft); border-color: var(--kids-yellow); }
.kreg-inc__price { display: block; font-weight: 600; color: var(--g-blue); font-size: var(--fs-small); }
.kreg-inc__note { margin: 0; font-size: .8rem; color: var(--muted); font-style: italic; }

/* ---------- Experience choice ---------- */
.kreg-choice { border: 0; }
.kreg-choice__label { font-weight: 600; font-size: .9rem; margin: 0; }
.kreg-choice__options { display: flex; flex-wrap: wrap; gap: .6rem; }
.kreg-choice__options--stack { flex-direction: column; align-items: flex-start; }
.kreg-choice .kreg-step__hint { margin: 0; }
.kreg-pill { position: relative; cursor: pointer; }
.kreg-pill input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.kreg-pill span {
  display: inline-flex; align-items: center; min-height: 44px; padding: .5rem 1.15rem;
  border: 1.5px solid rgba(57, 73, 171, .25); border-radius: 99px; background: #fff; font-weight: 600;
  transition: border-color .15s ease, background-color .15s ease;
}
.kreg-pill:hover span { border-color: var(--g-blue); }
.kreg-pill input:checked + span { background: var(--g-blue); border-color: var(--g-blue); color: #fff; }
.kreg-pill--check input:checked + span::before { content: "✓ "; }
.kreg-pill span { text-align: left; }
.kreg-pill input:focus-visible + span { outline: 3px solid rgba(0, 112, 180, .45); outline-offset: 2px; }
.kreg-choice[aria-invalid="true"] .kreg-pill span { border-color: #B3261E; }

/* Selects and the tel field share the .reg-field look */
.reg-field textarea {
  width: 100%; font: 400 1rem/1.4 var(--font-body); color: inherit; background: var(--g-white); resize: vertical;
  border: 1px solid rgba(57, 73, 171, .25); border-radius: var(--g-radius-sm); padding: .7rem .85rem;
}
.reg-field textarea:focus, .reg-field input[type=date]:focus { outline: none; border-color: var(--g-blue); box-shadow: 0 0 0 3px rgba(0, 112, 180, .18); }
.reg-field input[type=date] {
  width: 100%; font: inherit; color: inherit; background: var(--g-white); min-height: 46px;
  border: 1px solid rgba(57, 73, 171, .25); border-radius: var(--g-radius-sm); padding: .6rem .8rem;
}
.reg-field input[type=tel] {
  width: 100%; font: inherit; color: inherit; background: var(--g-white);
  border: 1px solid rgba(57, 73, 171, .25); border-radius: var(--g-radius-sm); padding: .7rem .85rem; min-height: 46px;
}
.reg-field input[type=tel]:focus { outline: none; border-color: var(--g-blue); box-shadow: 0 0 0 3px rgba(0, 112, 180, .18); }

.kreg-step--consent .reg-field--check { gap: .35rem .65rem; }
.kreg-form__submit { min-width: 12rem; justify-content: center; }
@media (max-width: 479px) { .kreg-form__submit { justify-self: stretch; } }

/* ---------- Success ---------- */
.kreg-done { gap: 1rem; }
.kreg-done__badge {
  display: grid; place-items: center; width: 44px; height: 44px; margin: 0; border-radius: 50%;
  background: var(--kids-yellow); color: var(--g-blue); box-shadow: 0 0 0 6px var(--kids-yellow-soft);
}
.kreg-done__title { font-size: clamp(1.4rem, 2vw + 1rem, 1.9rem); }

/* While the availability check runs, sessions cannot be ticked yet */
.kreg.is-loading .kreg-sessions { opacity: .6; pointer-events: none; }

@media (prefers-reduced-motion: reduce) {
  .kreg-session, .kreg-session__tick, .kreg-pill span { transition: none; }
}