:root {
  color-scheme: light;
  --ink: #13201b;
  --muted: #637068;
  --panel: rgba(255,255,255,.91);
  --line: #dfe9e3;
  --accent: #0b8f62;
  --accent-dark: #08704d;
  --danger: #b42318;
  --shadow: 0 24px 70px rgba(26, 66, 49, .16);
}
* { box-sizing: border-box; }
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 28px;
  color: var(--ink);
  font-family: Tahoma, Arial, sans-serif;
  background:
    radial-gradient(circle at 15% 15%, rgba(36, 178, 126, .18), transparent 34%),
    radial-gradient(circle at 85% 85%, rgba(255, 191, 72, .15), transparent 32%),
    #f2f7f4;
}
.shell { width: min(920px, 100%); display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
.brand { padding: 28px; display: flex; gap: 18px; align-items: flex-start; }
.brand-mark { flex: 0 0 auto; width: 58px; height: 58px; display: grid; place-items: center; border-radius: 18px; color: #fff; background: linear-gradient(135deg, var(--accent), #075b40); font-size: 30px; font-weight: 800; box-shadow: 0 14px 30px rgba(11, 143, 98, .27); }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 12px; font-size: clamp(34px, 5vw, 58px); letter-spacing: -.04em; }
h2 { margin-bottom: 22px; font-size: 26px; }
.eyebrow { margin-bottom: 8px; color: var(--accent-dark); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.subtitle { max-width: 520px; color: var(--muted); font-size: 17px; line-height: 1.8; }
.card { padding: 30px; border: 1px solid rgba(255,255,255,.75); border-radius: 26px; background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
label { display: block; margin-bottom: 9px; font-size: 14px; font-weight: 700; }
.password-wrap { display: flex; border: 1px solid var(--line); border-radius: 14px; background: #fff; overflow: hidden; transition: border-color .18s ease, box-shadow .18s ease; }
.password-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(11, 143, 98, .12); }
input { min-width: 0; flex: 1; padding: 15px 16px; border: 0; outline: 0; background: transparent; font-size: 16px; }
button { font: inherit; cursor: pointer; }
button:active { transform: scale(.98); }
.icon-button { border: 0; padding: 0 16px; color: var(--accent-dark); background: transparent; font-weight: 700; }
.primary, .secondary { width: 100%; min-height: 49px; border-radius: 14px; font-weight: 800; transition: transform .14s ease, background .18s ease; }
.primary { border: 0; color: #fff; background: var(--accent); }
.primary:hover { background: var(--accent-dark); }
.primary:disabled { cursor: wait; opacity: .65; }
.secondary { margin-top: 22px; border: 1px solid var(--line); color: var(--ink); background: #fff; }
.error { min-height: 24px; margin: 10px 0 8px; color: var(--danger); font-size: 14px; }
.hidden { display: none !important; }
.admin-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; }
.status { display: inline-flex; align-items: center; gap: 7px; padding: 8px 11px; border-radius: 999px; color: #08704d; background: #e8f8f1; font-size: 13px; font-weight: 800; }
.status span { width: 8px; height: 8px; border-radius: 50%; background: #0aa66f; box-shadow: 0 0 0 4px rgba(10, 166, 111, .12); }
.notice { padding: 18px; border: 1px solid #dcebe3; border-radius: 16px; background: #f7fbf9; line-height: 1.7; }
.notice p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.session-details { margin: 20px 0 0; }
.session-details div { display: flex; justify-content: space-between; gap: 18px; padding: 12px 0; border-bottom: 1px solid var(--line); }
dt { color: var(--muted); } dd { margin: 0; font-weight: 800; }
@media (max-width: 760px) {
  body { padding: 18px; }
  .shell { grid-template-columns: 1fr; gap: 8px; }
  .brand { padding: 12px 8px 22px; }
  .brand-mark { width: 48px; height: 48px; border-radius: 15px; font-size: 25px; }
  h1 { font-size: 36px; }
  .card { padding: 24px; border-radius: 22px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }