/* APSO booking — brand: navy #1f3a5f, grey #5b6770, teal accent #1aa3b5. */
:root {
  --navy: #1f3a5f; --grey: #5b6770; --teal: #1aa3b5; --teal-d: #15848f;
  --bg: #f5f7fa; --card: #fff; --line: #e2e8f0; --danger: #c0392b;
  --radius: 12px; --shadow: 0 2px 10px rgba(31,58,95,.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--navy); }
h1, h2, h3 { margin: 0 0 .4em; }
.loading, .empty, .muted { color: var(--grey); }
.error { color: var(--danger); padding: 1rem; }

/* brand band */
.brandbar { background: var(--navy); color: #fff; padding: 1.5rem 1rem; }
.brandbar-inner { max-width: 760px; margin: 0 auto; display: flex; align-items: center; gap: 1.1rem; }
.logo-chip { background: #fff; border-radius: 12px; padding: .7rem .9rem; flex: 0 0 auto; display: grid; place-items: center; box-shadow: 0 2px 8px rgba(0,0,0,.15); }
.logo-chip img { height: 42px; display: block; }
.brand-titles h1 { font-size: 1.5rem; line-height: 1.1; margin: 0; color: #fff; }
.brand-titles h1::after { content: ""; display: block; width: 46px; height: 3px; background: var(--teal); border-radius: 2px; margin: .55rem 0; }
.brand-sub { margin: 0; color: #fff; font-weight: 600; font-size: 1.12rem; }
.brand-tag { margin: .15rem 0 0; color: #b9c6d6; font-size: .9rem; }

/* next-available call to action */
.cta-wrap { text-align: center; margin: 1.4rem 1rem .4rem; }

/* logo on light backgrounds (admin login) */
.hero-logo { height: 48px; margin-bottom: .8rem; }

/* sponsor footer */
.sponsors { max-width: 920px; margin: 2.5rem auto 0; padding: 1.5rem 1rem 2.5rem; border-top: 1px solid var(--line); text-align: center; }
.sponsors img { max-width: 100%; height: auto; }

/* buttons */
.btn { font: inherit; border: 0; border-radius: 999px; padding: .6rem 1.1rem; cursor: pointer; font-weight: 600; }
.btn.primary { background: var(--teal); color: #fff; }
.btn.primary:hover { background: var(--teal-d); }
.btn.ghost { background: transparent; border: 1px solid var(--line); color: var(--navy); }
.btn.danger { background: #fdecea; color: var(--danger); }
.btn.sm { padding: .35rem .7rem; font-size: .85rem; }
.btn:disabled { opacity: .6; cursor: default; }

/* speaker cards */
.speakers { max-width: 760px; margin: 0 auto; padding: 0 1rem 3rem; display: grid; gap: 1rem; }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.2rem; }
.card-head { display: flex; gap: 1rem; align-items: center; }
.avatar { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; }
.avatar.sm { width: 44px; height: 44px; }
.avatar.placeholder { background: var(--navy); color: #fff; display: grid; place-items: center; font-size: 1.6rem; font-weight: 700; }
.card h2 { font-size: 1.15rem; }
.title { color: var(--grey); margin: 0; font-size: .9rem; }
.next { color: var(--teal-d); font-weight: 600; font-size: .85rem; margin: .2rem 0 0; }
.next.none { color: var(--grey); }
.bio { color: var(--grey); margin: .8rem 0; line-height: 1.5; }
.slots { display: flex; flex-wrap: wrap; gap: .5rem; }
.slot { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: .5rem .7rem; cursor: pointer; font: inherit; font-size: .85rem; }
.slot:hover { border-color: var(--teal); color: var(--teal-d); }
.slot.flash { animation: flash 1.4s ease; }
@keyframes flash { 0%,100% { background: #fff; } 30% { background: #d8f3f6; } }

/* expert list cards (clickable) */
.card-main { flex: 1; }
.card.expert { cursor: pointer; transition: box-shadow .15s, transform .15s; }
.card.expert:hover { box-shadow: 0 6px 20px rgba(31,58,95,.14); transform: translateY(-1px); }
.card.expert:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
.card.full { opacity: .65; }
.chev { margin-left: auto; font-size: 1.8rem; color: var(--teal); line-height: 1; padding-left: .5rem; }
.view-times { color: var(--teal-d); font-weight: 600; font-size: .9rem; margin: .8rem 0 0; }

/* detail view (one expert's times) */
.detail { max-width: 760px; margin: 0 auto; padding: 1rem 1rem 3rem; }
.back { margin-bottom: 1rem; }
.detail-head { display: flex; gap: 1rem; align-items: center; }
.detail-head h2 { font-size: 1.25rem; }
.detail .bio { margin: 1rem 0; }
.pick { margin: 1.4rem 0 .2rem; }
.day h4 { margin: 1.1rem 0 .5rem; color: var(--grey); font-size: .9rem; font-weight: 600; }
.change { text-align: center; margin: .8rem 0 0; }
.change a { color: var(--teal-d); font-size: .9rem; }

/* modal */
.overlay { position: fixed; inset: 0; background: rgba(31,58,95,.45); display: grid; place-items: center; padding: 1rem; }
.modal { background: #fff; border-radius: var(--radius); padding: 1.5rem; width: min(420px, 100%); }
.modal .when { color: var(--grey); margin-top: 0; }
form label { display: block; margin: .7rem 0; font-size: .9rem; font-weight: 600; }
form input, form textarea, form select { width: 100%; margin-top: .25rem; padding: .55rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.row { display: flex; gap: .6rem; justify-content: flex-end; margin-top: 1rem; }
.cal-actions { display: flex; gap: .6rem; flex-wrap: wrap; margin: .6rem 0 1rem; }
.cal-actions .btn { text-decoration: none; }
.form-msg { font-size: .85rem; margin: .6rem 0 0; }
.form-msg.error { color: var(--danger); }

/* admin */
.admin, .admin-login { max-width: 820px; margin: 0 auto; padding: 1rem; }
.admin-login { text-align: center; padding-top: 3rem; }
.admin-login form { display: inline-grid; gap: .8rem; margin-top: 1rem; }
.admin-bar { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: .8rem; }
.admin-bar h1 { font-size: 1.2rem; }
.tabs { display: flex; gap: .4rem; margin: 1rem 0; }
.tabs button { border: 0; background: transparent; padding: .5rem .9rem; border-radius: 999px; cursor: pointer; font: inherit; font-weight: 600; color: var(--grey); }
.tabs button.active { background: var(--navy); color: #fff; }
.panel { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.2rem; margin-bottom: 1rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem 1rem; align-items: end; }
.form-grid .wide, .form-grid button, .form-grid .form-msg { grid-column: 1 / -1; }
.form-actions { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.list { display: grid; gap: .5rem; }
.row-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .7rem 1rem; display: flex; align-items: center; gap: .8rem; }
.row-card .grow { flex: 1; }
.note { color: var(--grey); font-style: italic; font-size: .88rem; margin-top: .2rem; }
.badge { background: var(--line); color: var(--grey); border-radius: 6px; padding: .1rem .4rem; font-size: .72rem; font-weight: 700; }
.badge.booked { background: #fdecea; color: var(--danger); }

/* bookings management view */
.stats { display: flex; gap: .6rem; margin-bottom: 1rem; flex-wrap: wrap; }
.stat { background: var(--card); border-radius: 10px; box-shadow: var(--shadow); padding: .7rem 1rem; display: flex; flex-direction: column; min-width: 90px; }
.stat.grow { flex: 1; }
.stat .num { font-size: 1.5rem; font-weight: 700; color: var(--navy); line-height: 1.1; }
.stat .num.sm { font-size: 1rem; }
.stat .lbl { font-size: .75rem; color: var(--grey); text-transform: uppercase; letter-spacing: .03em; margin-top: .2rem; }
.book-controls { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; margin-bottom: 1rem; }
.book-controls input { flex: 1; min-width: 160px; padding: .55rem; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.seg button { border: 0; background: #fff; padding: .45rem .9rem; font: inherit; font-weight: 600; color: var(--grey); cursor: pointer; }
.seg button.on { background: var(--navy); color: #fff; }
.row-card.agenda { align-items: flex-start; }
.row-card.agenda .time { font-weight: 700; color: var(--teal-d); min-width: 52px; }
.expert-block-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .6rem; }
.expert-block .row-card { margin-bottom: .4rem; }
@media (max-width: 520px) { .form-grid { grid-template-columns: 1fr; } }