:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --surface-alt: #f0f3f2;
  --border: #e2e6e4;
  --text: #1d2624;
  --text-muted: #6b7876;
  --primary: #1f5f52;
  --primary-dark: #16453b;
  --primary-light: #e6efec;
  --accent: #c8963e;
  --ok: #2e7d5b;
  --ok-bg: #e5f3ec;
  --draft: #7a6a4f;
  --draft-bg: #f4ede0;
  --overdue: #b3413a;
  --overdue-bg: #fbe9e7;
  --muted-bg: #eef0ef;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 28, 0.06), 0 4px 14px rgba(20, 30, 28, 0.05);
  font-size: 15px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { display: flex; min-height: 100vh; }

/* --- Sidebar --- */
.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--primary-dark);
  color: #eef4f1;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
}
.sidebar .brand {
  font-size: 1.15rem;
  font-weight: 700;
  padding: 0 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}
.sidebar nav { flex: 1; display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }
.sidebar nav a {
  color: #d7e5df;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.sidebar nav a.active { background: var(--primary); color: #fff; font-weight: 600; }
.sidebar .user-box {
  padding: 14px 20px 0;
  margin-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: 0.82rem;
  color: #b9cbc3;
}
.sidebar .user-box a { color: #e7d9b8; }

/* --- Main --- */
.main {
  flex: 1;
  min-width: 0;
  padding: 28px 36px 60px;
}
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}
.page-header h1 { margin: 0 0 4px; font-size: 1.5rem; }
.page-header .subtitle { color: var(--text-muted); font-size: 0.92rem; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* --- Cards / Grid --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  margin-bottom: 20px;
}
.card h2, .card h3 { margin-top: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.kpi .label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); margin-bottom: 6px; }
.kpi .value { font-size: 1.6rem; font-weight: 700; color: var(--primary-dark); }
.kpi .value.negative { color: var(--overdue); }
.kpi .value.positive { color: var(--ok); }
.kpi .hint { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

/* --- Table --- */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: var(--surface-alt); }
.text-right { text-align: right; }

/* --- Badges --- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-draft { background: var(--draft-bg); color: var(--draft); }
.badge-overdue { background: var(--overdue-bg); color: var(--overdue); }
.badge-muted { background: var(--muted-bg); color: var(--text-muted); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
}
.btn:hover { background: var(--surface-alt); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }
.btn-danger { color: var(--overdue); border-color: var(--overdue-bg); }
.btn-danger:hover { background: var(--overdue-bg); }

/* --- Forms --- */
form .field { margin-bottom: 14px; }
label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-muted); margin-bottom: 5px; }
input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], select, textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.9rem;
  background: #fff;
  color: var(--text);
  font-family: inherit;
}
textarea { resize: vertical; min-height: 70px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }

/* --- Tree --- */
.tree ul { list-style: none; margin: 0; padding-left: 22px; }
.tree > ul { padding-left: 0; }
.tree li { margin: 4px 0; position: relative; }
.tree-node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}
.tree-node .type-tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  text-transform: uppercase;
}
.tree-node .meta { color: var(--text-muted); font-size: 0.8rem; }
.tree-node .grow { flex: 1; }

/* --- Alerts --- */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 0.88rem; }
.alert-error { background: var(--overdue-bg); color: var(--overdue); }
.alert-success { background: var(--ok-bg); color: var(--ok); }
.alert-info { background: var(--primary-light); color: var(--primary-dark); }

/* --- Login --- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--primary-dark); }
.login-box { background: #fff; padding: 40px; border-radius: 14px; width: 100%; max-width: 380px; box-shadow: var(--shadow); }
.login-box h1 { margin-top: 0; font-size: 1.3rem; color: var(--primary-dark); }
.login-box .btn-primary { width: 100%; justify-content: center; margin-top: 6px; }

.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs a { padding: 9px 16px; font-size: 0.88rem; color: var(--text-muted); border-bottom: 2px solid transparent; }
.tabs a.active { color: var(--primary-dark); font-weight: 700; border-color: var(--primary); }