:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #f97316;
  --primary-dark: #ea580c;
  --danger: #dc2626;
  --border: #e2e8f0;
  --sidebar-w: 220px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ── Top bar ── */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0f172a;
  color: #fff;
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand-title { font-weight: 700; font-size: 16px; }
.brand-sub { font-size: 12px; color: #94a3b8; }
.user-box { display: flex; align-items: center; gap: 12px; }
.user-email { font-size: 13px; color: #cbd5e1; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Buttons ── */
.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  transition: opacity .15s;
  white-space: nowrap;
}
.btn:active { opacity: .75; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: transparent; color: #334155; border: 1px solid var(--border); }
.btn-ghost:hover { background: #f8fafc; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

/* ── Login ── */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #0f172a, #1e293b);
}
.login-card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0,0,0,.3);
}
.login-card h1 { font-size: 22px; margin-bottom: 4px; }
.login-card p { color: var(--muted); margin-bottom: 20px; }
.login-hint { font-size: 13px; }
.login-card .btn { width: 100%; margin-top: 8px; }

/* ── App layout ── */
.app { display: flex; min-height: calc(100vh - 56px); }
.sidebar {
  width: var(--sidebar-w);
  background: #0f172a;
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  flex-shrink: 0;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  cursor: pointer;
  font-size: 14px;
  color: #cbd5e1;
  text-decoration: none;
}
.nav-item:hover { background: #1e293b; }
.nav-item.active { background: #1e293b; color: #fff; border-left: 3px solid var(--primary); }

.content {
  flex: 1;
  padding: 24px;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}
.view h2 { margin-bottom: 4px; }
.muted { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

/* ── Grid / cards ── */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.card-btn {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  font-size: 15px;
  cursor: pointer;
  text-align: left;
}
.card-btn:hover { border-color: var(--primary); box-shadow: 0 2px 8px rgba(0,0,0,.06); }

/* ── Browser ── */
.browser-controls { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.browser-controls select, .browser-controls input {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--card);
}
.browser-controls select { flex: 0 0 200px; }
.browser-controls input { flex: 1; min-width: 150px; }

.doc-list { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.doc-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  cursor: pointer;
  font-size: 13px;
}
.doc-item:hover { border-color: var(--primary); }
.doc-item .doc-id { font-family: monospace; color: var(--muted); font-size: 12px; }
.doc-item .doc-summary { margin-top: 4px; color: #334155; word-break: break-word; }

.empty { color: var(--muted); text-align: center; padding: 40px; }

/* ── Detail ── */
.doc-detail { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 16px; }
.detail-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.detail-head h3 { font-size: 16px; word-break: break-all; }
.detail-form .field { margin-bottom: 12px; }
.detail-form label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.detail-form .check-row { display: flex; align-items: center; gap: 4px; margin-top: 4px; font-size: 14px; color: var(--text); cursor: pointer; }
.detail-form .check-row input[type="checkbox"] { width: 18px; height: 18px; }
.detail-form input, .detail-form textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
.raw-details { margin: 12px 0; }
.raw-details pre { background: #0f172a; color: #e2e8f0; padding: 12px; border-radius: 8px; font-size: 12px; overflow: auto; max-height: 300px; }
.detail-actions { display: flex; gap: 8px; }
.status-msg { margin-top: 8px; font-size: 13px; }
.status-msg.ok { color: #16a34a; }
.status-msg.err { color: var(--danger); }

/* ── Actions ── */
.action-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
.action-card h3 { margin-bottom: 4px; }
.row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.row input {
  flex: 1;
  min-width: 180px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

/* ── Modal ── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}
.modal-card {
  background: var(--card);
  border-radius: 12px;
  padding: 20px;
  max-width: 420px;
  width: 100%;
}
.modal-card h3 { margin-bottom: 8px; }
.modal-card p { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.modal-card .row { justify-content: flex-end; }

.error-msg { color: var(--danger); font-size: 13px; margin-top: 8px; }
.loading { text-align: center; color: var(--muted); padding: 20px; }

/* ── Responsive ── */
@media (max-width: 720px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; overflow-x: auto; padding: 8px; }
  .nav-item { padding: 10px 14px; flex-shrink: 0; font-size: 13px; }
  .content { padding: 16px; }
}