:root {
  --brand: #2563eb;
  --brand-ink: #fff;
  --bg: #f6f7f9;
  --card: #fff;
  --ink: #14161a;
  --muted: #646b76;
  --line: #e3e6ea;
  --soft: #eef1f5;
  --ok: #15803d;
  --warn: #b45309;
  --bad: #b91c1c;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1114; --card: #171a1f; --ink: #eceef1; --muted: #9aa1ab; --line: #2a2f36; --soft: #20242a;
    --shadow: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: 1.75rem; } h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.hidden { display: none !important; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 640px; margin: 0 auto; padding: 0 16px; }

/* top bar */
.topbar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar .wrap { display: flex; align-items: center; gap: 16px; height: 56px; }
.logo { font-weight: 700; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.logo .mark { width: 26px; height: 26px; border-radius: 7px; background: var(--brand); display: grid; place-items: center; color: #fff; font-size: 13px; }
.spacer { flex: 1; }

/* cards & layout */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.card + .card { margin-top: 16px; }
.stack > * + * { margin-top: 12px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 640px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

/* forms */
label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 4px; }
input, select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px;
}
textarea { min-height: 80px; resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
input[type=checkbox] { width: auto; }
.check { display: flex; gap: 8px; align-items: center; font-weight: 500; }
.field { margin-bottom: 12px; }
.hint { font-size: .8rem; color: var(--muted); margin-top: 4px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 600; border-radius: 9px; padding: 9px 16px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); text-decoration: none; white-space: nowrap;
}
.btn:hover { background: var(--soft); }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn.primary:hover { filter: brightness(1.07); }
.btn.danger { color: var(--bad); }
.btn.small { padding: 5px 10px; font-size: .85rem; }
.btn.block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.linkbtn { background: none; border: 0; color: var(--brand); font: inherit; cursor: pointer; padding: 0; }

.alert { padding: 10px 12px; border-radius: 9px; font-size: .9rem; }
.alert.error { background: color-mix(in srgb, var(--bad) 12%, transparent); color: var(--bad); }
.alert.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); color: var(--ok); }
.alert.info { background: var(--soft); color: var(--ink); }

.pill { display: inline-block; font-size: .75rem; font-weight: 600; padding: 2px 8px; border-radius: 99px; background: var(--soft); color: var(--muted); }
.pill.booked { background: color-mix(in srgb, var(--brand) 14%, transparent); color: var(--brand); }
.pill.completed { background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); }
.pill.cancelled { background: color-mix(in srgb, var(--bad) 12%, transparent); color: var(--bad); }
.pill.no_show { background: color-mix(in srgb, var(--warn) 14%, transparent); color: var(--warn); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

/* booking flow */
.hero { background: var(--brand); color: var(--brand-ink); padding: 28px 0 56px; }
.hero h1 { margin-bottom: 4px; }
.hero p { margin: 0; opacity: .9; }
.book-main { margin-top: -36px; padding-bottom: 48px; }
.steps { display: flex; gap: 6px; margin-bottom: 16px; }
.steps span { flex: 1; height: 4px; border-radius: 4px; background: var(--line); }
.steps span.on { background: var(--brand); }
.option {
  display: flex; gap: 12px; align-items: flex-start; width: 100%; text-align: left; font: inherit; color: inherit;
  padding: 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); cursor: pointer;
}
.option + .option { margin-top: 8px; }
.option:hover { border-color: color-mix(in srgb, var(--brand) 50%, var(--line)); }
.option.selected { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.option .grow { flex: 1; }
.option .price { font-weight: 700; white-space: nowrap; }
.tick { width: 20px; height: 20px; border-radius: 6px; border: 1.5px solid var(--line); flex: none; margin-top: 2px; display: grid; place-items: center; }
.option.selected .tick { background: var(--brand); border-color: var(--brand); }
.option.selected .tick::after { content: ""; width: 9px; height: 5px; border: 2px solid #fff; border-top: 0; border-right: 0; transform: rotate(-45deg) translate(1px,-1px); }
.radio .tick { border-radius: 50%; }
.cat { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 16px 0 8px; font-weight: 700; }
.avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--soft); display: grid; place-items: center; font-weight: 700; color: var(--brand); flex: none; }

.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; text-align: center; }
.cal .dow { font-size: .75rem; color: var(--muted); font-weight: 600; padding: 4px 0; }
.cal button {
  aspect-ratio: 1; border-radius: 9px; border: 1px solid transparent; font: inherit; background: none; color: var(--muted); cursor: default;
}
.cal button.avail { color: var(--ink); background: var(--soft); cursor: pointer; font-weight: 600; }
.cal button.avail:hover { border-color: var(--brand); }
.cal button.sel { background: var(--brand); color: var(--brand-ink); }
.cal button.today { text-decoration: underline; }
.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; }
.slots button { font: inherit; font-weight: 600; padding: 10px 6px; border-radius: 9px; border: 1px solid var(--line); background: var(--card); color: var(--ink); cursor: pointer; }
.slots button:hover { border-color: var(--brand); }
.slots button.sel { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.summary { background: var(--soft); border-radius: 10px; padding: 12px 14px; font-size: .92rem; }
.summary div { display: flex; justify-content: space-between; gap: 12px; }
.bar { position: sticky; bottom: 0; background: var(--card); border-top: 1px solid var(--line); padding: 12px 0; margin-top: 16px; }
.bar .narrow { display: flex; gap: 12px; align-items: center; }
.done-icon { width: 56px; height: 56px; border-radius: 50%; background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); display: grid; place-items: center; font-size: 28px; margin-bottom: 12px; }

/* dashboard */
.dash { display: grid; grid-template-columns: 220px 1fr; min-height: calc(100vh - 56px); }
.side { border-right: 1px solid var(--line); background: var(--card); padding: 16px 10px; }
.side button { display: block; width: 100%; text-align: left; font: inherit; padding: 9px 12px; border-radius: 8px; border: 0; background: none; color: var(--ink); cursor: pointer; }
.side button:hover { background: var(--soft); }
.side button.on { background: color-mix(in srgb, var(--brand) 12%, transparent); color: var(--brand); font-weight: 600; }
.side .label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding: 12px 12px 4px; font-weight: 700; }
.main { padding: 24px; min-width: 0; }
.main-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.main-head h1 { margin: 0; font-size: 1.4rem; }
@media (max-width: 800px) {
  .dash { grid-template-columns: 1fr; }
  .side { border-right: 0; border-bottom: 1px solid var(--line); display: flex; overflow-x: auto; gap: 4px; padding: 8px; }
  .side button { width: auto; white-space: nowrap; }
  .side .label { display: none; }
  .main { padding: 16px; }
}
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stat b { display: block; font-size: 1.6rem; }
.stat span { color: var(--muted); font-size: .85rem; }

.day-group h3 { margin: 20px 0 8px; font-size: .95rem; color: var(--muted); }
.appt { display: grid; grid-template-columns: 92px 1fr auto; gap: 12px; padding: 12px 14px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; align-items: start; }
.appt + .appt { margin-top: 8px; }
.appt .time { font-weight: 700; }
.appt .actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 640px) { .appt { grid-template-columns: 1fr; } .appt .actions { justify-content: flex-start; } }

.hours-row { display: grid; grid-template-columns: 110px 1fr; gap: 12px; align-items: start; padding: 8px 0; border-bottom: 1px solid var(--line); }
.shift { display: flex; gap: 6px; align-items: center; margin-bottom: 6px; }
.shift input { width: 140px; }
@media (max-width: 640px) { .hours-row { grid-template-columns: 1fr; } }

dialog { border: 1px solid var(--line); border-radius: 14px; padding: 0; max-width: 560px; width: calc(100% - 32px); background: var(--card); color: var(--ink); }
dialog::backdrop { background: rgba(10,12,16,.45); }
dialog form, dialog .dlg { padding: 20px; }
dialog .dlg-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.copy { display: flex; gap: 8px; }
.copy input { font-family: ui-monospace, monospace; font-size: .85rem; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; z-index: 100; font-size: .9rem; }

/* landing */
.landing-hero { padding: 72px 0 48px; text-align: center; }
.landing-hero h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 12px; }
.landing-hero p { font-size: 1.1rem; color: var(--muted); max-width: 560px; margin: 0 auto 24px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; padding-bottom: 64px; }
.auth-box { max-width: 400px; margin: 48px auto; }

/* legal pages */
.legal { padding: 32px 16px 64px; }
.legal h2 { margin-top: 28px; }
.legal ul { padding-left: 20px; }
.legal li { margin-bottom: 6px; }
.site-footer { text-align: center; padding: 24px 16px 40px; font-size: .85rem; color: var(--muted); }
.site-footer a { color: var(--muted); }