:root {
  --accent: #00854a;
  --accent-dark: #006b3c;
  --bg: #f4f6f5;
  --card: #ffffff;
  --border: #e2e6e4;
  --text: #1c2420;
  --text-muted: #62706a;
  --danger: #c0392b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Login */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 340px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.login-card h1 { margin: 0; font-size: 20px; }
.login-card .subtitle { margin: 0 0 10px; color: var(--text-muted); font-size: 13px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-muted); }
.login-card input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}
.login-card button {
  margin-top: 8px;
  padding: 11px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
.login-card button:hover { background: var(--accent-dark); }
.error { color: var(--danger); font-size: 13px; min-height: 16px; margin: 0; }

/* Dashboard */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar-title { font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-muted); }
.topbar-right select { padding: 6px 8px; border-radius: 6px; border: 1px solid var(--border); }

.ghost-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}
.ghost-btn:hover { background: var(--bg); }
.ghost-btn.small { padding: 2px 8px; }

.content { max-width: 1100px; margin: 0 auto; padding: 24px; display: flex; flex-direction: column; gap: 20px; }

.stat-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.stat-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.stat-tile .label { font-size: 12px; color: var(--text-muted); }
.stat-tile .value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.delta { display: inline-block; margin-left: 8px; font-size: 12px; font-weight: 600; vertical-align: middle; }
.delta.up { color: var(--accent); }
.delta.down { color: var(--danger); }
.delta.flat { color: var(--text-muted); }

.insights-card { background: linear-gradient(135deg, #eefaf3, #ffffff); border-color: #c9ecd9; }
.insights-list { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; }
.insights-loading, .insights-error { list-style: none; margin-left: -18px; color: var(--text-muted); font-style: italic; }

.charts-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 800px) { .charts-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}
.card h2 { margin: 0 0 14px; font-size: 15px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 500; }

/* Chat widget */
.chat-widget { position: fixed; bottom: 20px; right: 20px; z-index: 50; }
.chat-toggle {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 12px 18px;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.chat-panel { display: none; }
.chat-widget.open .chat-toggle { display: none; }
.chat-widget.open .chat-panel { display: flex; }

.chat-panel {
  flex-direction: column;
  width: 340px;
  height: 440px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.18);
  overflow: hidden;
}
.chat-header { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; background: var(--accent); color: #fff; font-size: 13px; }
.chat-header .ghost-btn { border-color: rgba(255,255,255,0.5); color: #fff; }
.chat-messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; font-size: 13px; }
.chat-msg { padding: 8px 10px; border-radius: 8px; max-width: 85%; white-space: pre-wrap; }
.chat-msg.user { align-self: flex-end; background: var(--accent); color: #fff; }
.chat-msg.assistant { align-self: flex-start; background: var(--bg); }
.chat-msg.pending { align-self: flex-start; color: var(--text-muted); font-style: italic; }
.chat-form { display: flex; border-top: 1px solid var(--border); }
.chat-form input { flex: 1; border: none; padding: 10px; font-size: 13px; }
.chat-form button { border: none; background: var(--accent); color: #fff; width: 44px; cursor: pointer; }

/* Admin modal */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: flex; align-items: center; justify-content: center; z-index: 60; }
.modal[hidden] { display: none; }
.modal-card { background: var(--card); border-radius: 12px; padding: 20px; width: 420px; max-height: 80vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; font-weight: 600; }
.inline-form { display: flex; gap: 8px; margin-bottom: 10px; }
.inline-form input { flex: 1; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }
.inline-form button { border: none; background: var(--accent); color: #fff; border-radius: 6px; padding: 8px 14px; cursor: pointer; }
#new-user-result { font-size: 12px; color: var(--text-muted); word-break: break-all; }