:root {
  --bg-primary: #0f1a14;
  --bg-secondary: #162a1e;
  --bg-card: #1c3326;
  --text-primary: #e8e0d4;
  --text-secondary: #a89b8c;
  --accent: #4a8c6f;
  --accent-light: #6bb592;
  --danger: #c45c5c;
  --warning: #c4a35c;
  --success: #5cc45c;
  --border: #2a4a38;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* Login */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  width: 360px;
  text-align: center;
}

.login-card h1 { color: var(--accent-light); margin-bottom: 0.5rem; }
.login-card p { color: var(--text-secondary); margin-bottom: 1.5rem; font-size: 0.875rem; }

.login-card input {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-family: var(--font);
}

.login-card button {
  width: 100%;
  padding: 0.75rem;
  background: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}

.login-card button:hover { background: var(--accent-light); }
.error { color: var(--danger); font-size: 0.8rem; margin-top: 0.5rem; }

/* Layout */
#app { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent-light);
  padding: 0 1.25rem;
  margin-bottom: 2rem;
}

.nav-links { list-style: none; flex: 1; }
.nav-link {
  display: block;
  padding: 0.625rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-left: 3px solid transparent;
}
.nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.nav-link.active {
  color: var(--accent-light);
  border-left-color: var(--accent-light);
  background: rgba(74,140,111,0.1);
}

.sync-status {
  padding: 0.75rem 1.25rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
}

.logout-btn {
  margin: 0.75rem 1.25rem;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
}

.content { margin-left: 220px; flex: 1; padding: 1.5rem 2rem; }

.toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1.5rem;
}

.period-btn {
  padding: 0.375rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.8rem;
}
.period-btn:first-child { border-radius: 4px 0 0 4px; }
.period-btn:last-child { border-radius: 0 4px 4px 0; }
.period-btn.active { background: var(--accent); color: var(--text-primary); border-color: var(--accent); }

/* Cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
}

.stat-label { font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 0.25rem; }
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-change { font-size: 0.75rem; margin-top: 0.25rem; }
.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--danger); }

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.data-table th {
  text-align: left;
  padding: 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  cursor: pointer;
}
.data-table td {
  padding: 0.75rem;
  border-bottom: 1px solid rgba(42,74,56,0.4);
}
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* Charts */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.chart-title {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Recommendation cards */
.rec-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}

.rec-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }

.rec-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-weight: 600;
  text-transform: uppercase;
}
.rec-badge.high { background: rgba(196,92,92,0.2); color: var(--danger); }
.rec-badge.medium { background: rgba(196,163,92,0.2); color: var(--warning); }
.rec-badge.low { background: rgba(92,196,92,0.2); color: var(--success); }

.rec-type { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; }
.rec-title { font-weight: 600; font-size: 0.9rem; }
.rec-body { font-size: 0.825rem; color: var(--text-secondary); line-height: 1.4; }

.rec-actions { margin-top: 0.75rem; }
.rec-btn {
  padding: 0.3rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
  margin-right: 0.5rem;
}
.rec-btn:hover { border-color: var(--accent); color: var(--accent-light); }

.section-title { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }

.loading { color: var(--text-secondary); padding: 2rem; text-align: center; }