:root {
  --bg: #f4f6f9;
  --sidebar-bg: #1e2a3a;
  --sidebar-text: #c6d0dc;
  --accent: #2f7cf6;
  --card-bg: #ffffff;
  --border: #e3e7ed;
  --text: #222b36;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); }
.hidden { display: none !important; }

.screen { min-height: 100vh; }

#login-screen { display: flex; align-items: center; justify-content: center; background: var(--sidebar-bg); }
.login-box { background: var(--card-bg); padding: 40px; border-radius: 10px; width: 320px; text-align: center; }
.login-box h1 { margin-top: 0; color: var(--accent); }
.login-box input { width: 100%; padding: 10px; margin: 8px 0; border: 1px solid var(--border); border-radius: 6px; }
.login-box button { width: 100%; padding: 10px; background: var(--accent); color: #fff; border: none; border-radius: 6px; cursor: pointer; font-weight: 600; }
.error { color: #d33; font-size: 13px; min-height: 18px; }

#app-screen { display: flex; }
.sidebar { width: 220px; background: var(--sidebar-bg); color: var(--sidebar-text); min-height: 100vh; padding: 20px 0; }
.sidebar h2 { padding: 0 20px; color: #fff; font-size: 18px; }
.sidebar nav { display: flex; flex-direction: column; margin-top: 20px; }
.sidebar nav a { color: var(--sidebar-text); text-decoration: none; padding: 12px 20px; font-size: 14px; }
.sidebar nav a.active, .sidebar nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar button { margin: 20px; padding: 8px 16px; background: transparent; border: 1px solid var(--sidebar-text); color: var(--sidebar-text); border-radius: 6px; cursor: pointer; }

.content { flex: 1; padding: 20px 30px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; background: var(--card-bg); padding: 12px 16px; border-radius: 8px; border: 1px solid var(--border); }
.topbar select, .topbar input, .topbar button { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; }
.topbar button { background: var(--accent); color: #fff; border: none; cursor: pointer; }

.cards { display: flex; gap: 16px; margin-bottom: 24px; }
.card { flex: 1; background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 20px; text-align: center; }
.card h3 { margin: 0 0 6px; font-size: 26px; color: var(--accent); }
.card p { margin: 0; color: #667; font-size: 13px; }

table { width: 100%; border-collapse: collapse; background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 24px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: #fafbfc; color: #556; }

.screenshot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.screenshot-grid img { width: 100%; border-radius: 6px; border: 1px solid var(--border); }

#view-agent input, #view-team input, #view-team select { padding: 8px; margin: 4px; border: 1px solid var(--border); border-radius: 6px; }
#view-agent button, #view-team button { padding: 8px 16px; background: var(--accent); color: #fff; border: none; border-radius: 6px; cursor: pointer; }