:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --line: #d0d5dd;
  --paper: #ffffff;
  --canvas: #f4f6f8;
  --accent: #175cd3;
  --accent-pressed: #1849a9;
  --danger: #b42318;
  --success: #067647;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

.topbar {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: max(18px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) 16px max(20px, env(safe-area-inset-left));
  background: color-mix(in srgb, var(--canvas) 88%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  backdrop-filter: blur(18px);
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: 1.55rem; letter-spacing: -0.025em; }
h2 { font-size: 1.3rem; letter-spacing: -0.018em; }
.eyebrow { margin-bottom: 2px; color: var(--accent); font-size: .72rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }

main { width: min(100%, 760px); margin: 0 auto; padding: 18px 16px calc(126px + env(safe-area-inset-bottom)); }
.card { margin-bottom: 14px; padding: 20px; background: var(--paper); border: 1px solid #e4e7ec; border-radius: 18px; box-shadow: 0 1px 2px rgb(16 24 40 / 5%); }
.centered { margin-top: 12vh; text-align: center; }
.centered img { margin-bottom: 18px; }
.centered p { color: var(--muted); line-height: 1.55; }

label { display: block; margin: 0 0 7px; font-size: .9rem; font-weight: 650; }
input, textarea, select {
  width: 100%;
  min-height: 48px;
  margin: 0 0 18px;
  padding: 11px 13px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 11px;
  font: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
textarea { min-height: 120px; resize: vertical; line-height: 1.45; }
select[multiple] { min-height: 132px; padding: 6px; }
select[multiple] option { padding: 8px 7px; border-radius: 7px; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgb(23 92 211 / 12%); }
input:invalid:not(:placeholder-shown) { border-color: var(--danger); }
.essentials > :last-child { margin-bottom: 0; }

details { padding: 0 !important; overflow: hidden; }
summary { display: flex; align-items: center; justify-content: space-between; min-height: 62px; padding: 0 20px; cursor: pointer; font-weight: 700; }
summary small { color: var(--muted); font-size: .75rem; font-weight: 500; }
details[open] summary { border-bottom: 1px solid #eaecf0; }
.details-grid { padding: 20px 20px 4px; }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hint { margin: -13px 0 18px; color: var(--muted); font-size: .78rem; }

.actions {
  position: fixed;
  z-index: 9;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 8px;
  padding: 12px max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  background: color-mix(in srgb, #fff 94%, transparent);
  border-top: 1px solid #e4e7ec;
  backdrop-filter: blur(18px);
}
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 11px;
  font: inherit;
  font-size: .88rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.button:disabled { cursor: wait; opacity: .58; }
.primary { color: #fff; background: var(--accent); }
.primary:hover { background: var(--accent-pressed); }
.secondary { color: #344054; background: #fff; border-color: var(--line); }
.quiet { padding: 8px 2px; color: var(--muted); background: transparent; border: 0; font: inherit; cursor: pointer; }
.message { padding: 13px 15px; border-radius: 11px; line-height: 1.4; }
.error { color: var(--danger); background: #fef3f2; }
.success { color: var(--success); background: #ecfdf3; }
.hidden { display: none !important; }

@media (max-width: 560px) {
  .two-columns { grid-template-columns: 1fr; gap: 0; }
  .card { padding: 17px; border-radius: 15px; }
  summary { padding: 0 17px; }
  .details-grid { padding: 17px 17px 1px; }
  .actions { grid-template-columns: 1fr 1fr; }
  .actions .primary { grid-column: 1 / -1; grid-row: 1; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }