:root {
  --bg: #0d0f13;
  --panel: #151820;
  --panel-2: #1b1f29;
  --border: #262b36;
  --text: #e7e9ec;
  --muted: #8a93a3;
  --accent: #3b82f6;
  --ok: #22c55e;
  --warn: #eab308;
  --danger: #ef4444;
  --ahead: #38bdf8;
}
* { 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);
  font-size: 14px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 600; font-size: 15px; letter-spacing: 0.2px; }
.topbar nav { display: flex; gap: 18px; }
.topbar nav a { color: var(--muted); font-size: 13px; }
.topbar nav a.active, .topbar nav a:hover { color: var(--text); }

main { max-width: 1100px; margin: 0 auto; padding: 28px 24px; }

h1 { font-size: 20px; font-weight: 600; margin: 0 0 20px; }
h2 { font-size: 15px; font-weight: 600; margin: 28px 0 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }

.login-wrap { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
}
.login-wrap .card { width: 100%; max-width: 340px; }

label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
input[type=text], input[type=password], input[type=email], input[type=number],
input[type=date], textarea, select {
  width: 100%;
  padding: 9px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0b0d11;
  color: var(--text);
  margin-bottom: 14px;
  font-family: inherit;
  font-size: 14px;
}
textarea { min-height: 120px; resize: vertical; }

button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 9px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  display: inline-block;
}
button.secondary, .btn.secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
button.danger, .btn.danger { background: var(--danger); }
button.small, .btn.small { padding: 5px 10px; font-size: 12px; }

.error { color: var(--danger); font-size: 13px; margin-bottom: 14px; }
.notice { color: var(--ok); font-size: 13px; margin-bottom: 14px; }

/* Dashboard */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 10px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.stat .n { font-size: 26px; font-weight: 600; }
.stat .l { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* Tablas */
table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 0.3px; }
tr:hover td { background: var(--panel-2); }

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2px;
  border: 1px solid transparent;
}
.badge-aldia { color: var(--ok); background: rgba(34,197,94,0.12); border-color: rgba(34,197,94,0.3); }
.badge-adelantado { color: var(--ahead); background: rgba(56,189,248,0.12); border-color: rgba(56,189,248,0.3); }
.badge-porvencer { color: var(--warn); background: rgba(234,179,8,0.12); border-color: rgba(234,179,8,0.3); }
.badge-vencido { color: var(--danger); background: rgba(239,68,68,0.12); border-color: rgba(239,68,68,0.3); }
.badge-suspendido { color: var(--muted); background: rgba(138,147,163,0.12); border-color: rgba(138,147,163,0.3); }

.toolbar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.toolbar form { display: flex; gap: 8px; align-items: center; }
.toolbar input[type=text] { margin-bottom: 0; width: 220px; }
.toolbar select { margin-bottom: 0; width: auto; }

.quickmonths { display: flex; gap: 8px; margin-bottom: 14px; }
.quickmonths button { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
.quickmonths button.selected { background: var(--accent); border-color: var(--accent); color: #fff; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 20px; }
.field { margin-bottom: 12px; }
.field .k { color: var(--muted); font-size: 12px; }
.field .v { font-size: 15px; margin-top: 2px; }

.actions-row { display: flex; gap: 8px; margin-bottom: 20px; flex-wrap: wrap; }

.muted { color: var(--muted); font-size: 12px; }
.empty { color: var(--muted); padding: 30px 0; text-align: center; }

.preview-box {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-top: 10px;
  white-space: pre-wrap;
  font-size: 13px;
}
.preview-box .subj { font-weight: 600; margin-bottom: 8px; }

.checkbox-row { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.checkbox-row input { width: auto; margin: 0; }