:root {
  --bg: #070707;
  --card: #111213;
  --card-edge: rgba(255, 255, 255, 0.08);
  --text: #f4f5f6;
  --muted: #9aa0a6;
  --green: #2fb866;
  --green-soft: rgba(47, 184, 102, 0.16);
  --danger: #ff6b6b;
  --field: #0c0d0e;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(1200px 600px at 50% -10%, #0e1a12 0%, var(--bg) 55%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

.portal-root {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent), var(--card);
  border: 1px solid var(--card-edge);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--green-soft); color: var(--green);
  border: 1px solid rgba(47, 184, 102, 0.35);
  font-size: 15px;
}
.brand-kicker {
  text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 11px; font-weight: 700; color: var(--muted);
}

.card-title { margin: 4px 0 6px; font-size: 30px; letter-spacing: -0.01em; }
.card-sub { margin: 0 0 18px; color: var(--muted); font-size: 14px; line-height: 1.5; }

.form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field span { font-size: 12px; color: var(--muted); font-weight: 600; }
.field input {
  background: var(--field);
  border: 1px solid var(--card-edge);
  border-radius: 10px;
  padding: 11px 12px;
  color: var(--text);
  font-size: 15px;
}
.field input:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px var(--green-soft); }

.btn {
  border-radius: 10px; padding: 12px 14px; font-size: 15px; font-weight: 650;
  border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--green); color: #06210f; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-primary:disabled { opacity: 0.7; cursor: default; }
.btn-link { background: none; color: var(--muted); border: none; padding: 4px; font-weight: 500; }
.btn-link:hover { color: var(--text); }

.notice { border-radius: 10px; padding: 10px 12px; font-size: 13px; line-height: 1.45; }
.notice-error { background: rgba(255, 107, 107, 0.12); color: #ffb4b4; border: 1px solid rgba(255, 107, 107, 0.3); }
.notice-success { background: var(--green-soft); color: #8fe6b3; border: 1px solid rgba(47, 184, 102, 0.3); }

.tiles { display: flex; flex-direction: column; gap: 12px; margin: 6px 0 14px; }
.tiles-loading { color: var(--muted); font-size: 14px; margin: 8px 0; }
.tile {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: 4px 12px;
  text-decoration: none; color: var(--text);
  background: var(--field);
  border: 1px solid var(--card-edge); border-radius: 12px;
  padding: 16px 18px;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}
.tile:hover { border-color: var(--green); background: rgba(47, 184, 102, 0.06); transform: translateY(-1px); }
.tile-name { font-size: 17px; font-weight: 700; }
.tile-detail { grid-column: 1; color: var(--muted); font-size: 13px; }
.tile-go { grid-row: 1 / span 2; color: var(--green); font-size: 20px; }