:root {
  --bg: #12151a;
  --panel: #1a1e25;
  --panel-line: #2a2f38;
  --ink: #f2efe9;
  --ink-dim: #9aa1ad;
  --accent: #ff5a36;
  --accent-ink: #12151a;
  --ok: #3ddc97;
  --danger: #ff6b6b;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 28px 40px 10px;
  border-bottom: 1px solid var(--panel-line);
}

.brand-mark {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-sub {
  margin-left: 12px;
  color: var(--ink-dim);
  font-size: 14px;
}

.gateway-status {
  font-size: 13px;
  color: var(--ink-dim);
}

.gateway-status.up { color: var(--ok); }
.gateway-status.down { color: var(--danger); }

.tabs {
  display: flex;
  gap: 28px;
  padding: 18px 40px 0;
  border-bottom: 1px solid var(--panel-line);
}

.tab {
  background: none;
  border: none;
  color: var(--ink-dim);
  font-size: 15px;
  font-weight: 600;
  padding: 0 0 14px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

.tab.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

main {
  padding: 32px 40px 60px;
  max-width: 1100px;
}

.panel { display: none; }
.panel.active { display: block; }

.panel-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  align-items: start;
}

.card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 10px;
  padding: 22px;
}

.form-card h2, .list-card h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
}

.form-card label {
  display: block;
  font-size: 13px;
  color: var(--ink-dim);
  margin-bottom: 12px;
}

.form-card input,
.form-card select,
.form-card textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 10px;
  background: var(--bg);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  color: var(--ink);
  font-size: 14px;
  font-family: inherit;
}

.form-card textarea { resize: vertical; }

.form-card button,
.list-card .ghost {
  cursor: pointer;
}

.form-card button[type="submit"] {
  width: 100%;
  margin-top: 6px;
  padding: 10px 14px;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 6px;
  font-weight: 700;
  font-size: 14px;
}

.hint {
  margin-top: 12px;
  font-size: 12px;
  color: var(--ink-dim);
  line-height: 1.5;
}

.list-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.ghost {
  background: none;
  border: 1px solid var(--panel-line);
  color: var(--ink-dim);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

th {
  text-align: left;
  font-size: 12px;
  color: var(--ink-dim);
  font-weight: 600;
  padding: 8px 6px;
  border-bottom: 1px solid var(--panel-line);
}

td {
  padding: 10px 6px;
  border-bottom: 1px solid var(--panel-line);
  font-size: 13px;
  vertical-align: middle;
}

td.empty {
  color: var(--ink-dim);
  text-align: center;
  padding: 24px 0;
}

.row-action {
  background: none;
  border: 1px solid var(--panel-line);
  color: var(--ink-dim);
  border-radius: 5px;
  padding: 4px 9px;
  font-size: 12px;
  cursor: pointer;
  margin-right: 4px;
}

.row-action.danger { color: var(--danger); border-color: #4a2c2c; }
.row-action.accent { color: var(--accent); border-color: #4a3226; }

.status-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-CONFIRMED { background: rgba(61,220,151,0.15); color: var(--ok); }
.status-CANCELLED { background: rgba(255,107,107,0.15); color: var(--danger); }
.status-ATTENDED { background: rgba(154,161,173,0.2); color: var(--ink-dim); }

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--panel-line);
  display: block;
}

.upload-label {
  display: inline-block;
  font-size: 11px;
  color: var(--accent);
  cursor: pointer;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-left: 3px solid var(--accent);
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  max-width: 360px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}

.toast.error { border-left-color: var(--danger); }
.toast.hidden { display: none; }

footer {
  padding: 20px 40px 40px;
  color: var(--ink-dim);
  font-size: 12px;
  border-top: 1px solid var(--panel-line);
}

footer code {
  color: var(--ink);
}

@media (max-width: 760px) {
  .panel-grid { grid-template-columns: 1fr; }
  main, .topbar, .tabs, footer { padding-left: 18px; padding-right: 18px; }
}