:root {
  --bg: #f7faf3;
  --surface: #ffffff;
  --line: #d9e6d4;
  --text: #18211c;
  --muted: #68766c;
  --primary: #176b4f;
  --primary-dark: #0f4e3a;
  --accent: #d49a24;
  --danger: #b42318;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(135deg, #eef8ef, #fff6dc 46%, #e6f7fa);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; }

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(320px, .92fr) minmax(420px, 1.08fr);
  background: linear-gradient(110deg, rgba(15, 78, 58, .94), rgba(24, 127, 143, .78), rgba(212, 154, 36, .62));
}
.brand-panel { color: white; padding: 56px; display: flex; flex-direction: column; justify-content: space-between; }
.brand-panel h1 { margin: 72px 0 16px; font-size: 44px; line-height: 1.05; }
.brand-panel p { max-width: 560px; color: rgba(255,255,255,.84); font-size: 17px; line-height: 1.65; }
.brand-mark { width: 64px; height: 64px; border-radius: 8px; background: white; object-fit: contain; padding: 3px; box-shadow: 0 12px 28px rgba(8,36,25,.18); }
.brand-panel .brand-mark, .install-logo { width: 92px; height: 92px; object-fit: contain; }
.login-panel, .install-page { display: grid; min-height: 100vh; place-items: center; padding: 32px; }
.login-card, .panel, .metric-card, .table-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 42px rgba(24,33,28,.08);
}
.login-card { width: min(100%, 430px); padding: 32px; }
.field { display: grid; gap: 7px; margin-top: 16px; }
.field label { font-weight: 700; font-size: 13px; }
.field input, .field select { border: 1px solid var(--line); border-radius: 8px; min-height: 42px; padding: 10px 12px; background: white; }
.btn { border: 1px solid transparent; border-radius: 8px; min-height: 40px; padding: 9px 14px; font-weight: 800; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.btn-primary { color: white; background: linear-gradient(135deg, var(--primary), #187f8f); }
.btn-ghost { border-color: var(--line); background: white; }
.btn-block { width: 100%; margin-top: 18px; }
.demo-users, .alert { margin-top: 16px; padding: 12px; border-radius: 8px; background: #edf8ef; color: var(--muted); font-size: 13px; }
.alert.danger { background: #fde8e7; color: var(--danger); }
.alert.success { background: #edf8ef; color: var(--primary-dark); }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 264px 1fr; }
.sidebar { background: linear-gradient(180deg, #0e3829, #0d241c 58%, #172018); color: white; padding: 22px 16px; }
.side-brand { display: flex; gap: 12px; align-items: center; padding: 4px 6px 22px; border-bottom: 1px solid rgba(255,255,255,.16); }
.side-brand strong { display: block; }
.side-brand span, .user-block span { color: rgba(255,255,255,.68); font-size: 12px; }
.nav { display: grid; gap: 6px; margin-top: 20px; }
.nav a { color: rgba(255,255,255,.78); text-decoration: none; border-radius: 8px; min-height: 42px; padding: 10px 12px; font-weight: 750; }
.nav a.active, .nav a:hover { color: white; background: linear-gradient(135deg, rgba(255,255,255,.14), rgba(212,154,36,.18)); box-shadow: inset 3px 0 0 var(--accent); }
.main { min-width: 0; }
.topbar { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 26px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.84); }
.topbar h1 { margin: 0; font-size: 21px; }
.user-block { display: flex; align-items: center; gap: 10px; }
.avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 8px; background: #fff4d7; color: var(--primary); font-weight: 900; }
.content { padding: 26px; }
.section-title { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 16px; }
.toolbar { display: flex; gap: 10px; justify-content: flex-end; }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.metric-card { padding: 18px; border-top: 4px solid var(--primary); }
.metric-label { color: var(--muted); font-size: 13px; font-weight: 750; }
.metric-value { margin-top: 10px; font-size: 28px; font-weight: 900; }
.metric-note { color: var(--muted); font-size: 12px; margin-top: 6px; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: linear-gradient(135deg, #eef7ed, #fff6dc); color: #3d4c42; font-size: 12px; text-transform: uppercase; }
.panel { padding: 18px; }
.master-form h3 { margin-top: 0; color: var(--primary-dark); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 14px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

@media (max-width: 900px) {
  .login-shell, .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .metric-grid { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
}