/* Sistema de Gestión Escolar — Universidad Intercontinental Olimpo */
/* Colores institucionales: los colores del escudo (verde olivo, dorado
   y café). Se cambian en Personalización o en config.php
   (BRAND_PRIMARY / BRAND_SECONDARY / BRAND_ACCENT); los valores de
   aquí son solo el respaldo cuando aún no hay valores guardados. */
:root { --brand-primary: #747500; --brand-secondary: #C98F09; --brand-accent: #6C513C; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, Helvetica, sans-serif; background: #f2f4f8; color: #1a1a1a; font-size: 15px; line-height: 1.45; }
a { color: var(--brand-primary); }
h1 { font-size: 24px; color: var(--brand-primary); margin: 0 0 16px 0; }
h2 { font-size: 19px; color: var(--brand-primary); margin: 22px 0 10px 0; }
h3 { font-size: 16px; color: var(--brand-primary); margin: 18px 0 8px 0; }

.shell { display: flex; min-height: 100vh; }
.sidebar { width: 250px; flex-shrink: 0; background: var(--brand-primary); color: #fff; display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { font-size: 19px; font-weight: bold; line-height: 1.25; padding: 20px 18px 4px 18px; }
.brand-sub { font-size: 12.5px; color: #b9c2d6; padding: 0 18px 14px 18px; border-bottom: 1px solid rgba(255,255,255,.18); }
.sidebar nav { padding: 10px 0; flex: 1; }
.nav-section { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: #8fa0c2; padding: 14px 18px 5px 18px; }
.nav-link { display: block; color: #dbe2ef; text-decoration: none; padding: 7px 18px; font-size: 14.5px; }
.nav-link:hover { background: rgba(255,255,255,.08); }
.nav-link.active { background: var(--brand-accent); color: #fff; font-weight: bold; border-left: 3px solid var(--brand-secondary); }
.userbox { padding: 14px 18px; border-top: 1px solid rgba(255,255,255,.18); font-size: 13px; }
.userbox-name { font-weight: bold; }
.userbox-role { color: #b9c2d6; margin: 2px 0 8px 0; }
.logout { color: #ffd9d9; font-size: 13px; }

.main { flex: 1; padding: 22px 26px 40px 26px; min-width: 0; }
.main p { margin: 6px 0 10px 0; }

/* Tablas */
table { width: 100%; border-collapse: collapse; background: #fff; margin: 10px 0 16px 0; font-size: 14px; }
th { background: var(--brand-primary); color: #fff; text-align: left; padding: 8px 10px; }
td { border-bottom: 1px solid #ddd; padding: 7px 10px; vertical-align: top; }
tr:nth-child(even) td { background: #f7f8fb; }

/* Formularios */
form label { display: block; font-weight: bold; font-size: 14px; margin: 10px 0 4px 0; }
input[type=text], input[type=date], input[type=time], input[type=number], input[type=email], input[type=password], select, textarea { width: 100%; max-width: 520px; padding: 8px 10px; border: 1px solid #bbb; border-radius: 4px; font-size: 15px; font-family: inherit; background: #fff; }
textarea { min-height: 70px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0 18px; }
.form-grid label { margin-top: 8px; }
.btn { display: inline-block; padding: 8px 16px; border: 1px solid var(--brand-primary); background: var(--brand-primary); color: #fff; border-radius: 4px; cursor: pointer; font-size: 14.5px; text-decoration: none; margin: 4px 4px 4px 0; }
.btn:hover { background: var(--brand-accent); }
.btn-secondary { background: #fff; color: var(--brand-primary); }
.btn-danger { background: #8A1F1F; border-color: #8A1F1F; }
.btn-block { width: 100%; }
.btn-sm { padding: 4px 10px; font-size: 13px; }

/* Tarjetas e indicadores */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 12px 0 20px 0; }
.card { background: #fff; border: 1px solid #ddd; border-left: 4px solid var(--brand-primary); border-radius: 6px; padding: 14px 16px; }
.card .num { font-size: 28px; font-weight: bold; color: var(--brand-primary); }
.card .lbl { font-size: 13.5px; color: #555; }
.card.warn { border-left-color: #8A1F1F; }
.card.warn .num { color: #8A1F1F; }
.card.ok { border-left-color: #2e7d32; }
.card.ok .num { color: #2e7d32; }
.panel { background: #fff; border: 1px solid #ddd; border-radius: 6px; padding: 16px 18px; margin: 12px 0; }
.muted { color: #666; font-size: 13.5px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12.5px; font-weight: bold; background: #e8ecf3; color: var(--brand-primary); }
.badge-green { background: #dff0df; color: #2e7d32; }
.badge-red { background: #fbe3e3; color: #8A1F1F; }
.badge-amber { background: #fdf0d3; color: #8a6d00; }

/* Mensajes */
.flash { padding: 10px 14px; border-radius: 4px; margin: 10px 0; }
.flash-ok { background: #dff0df; border: 1px solid #9ccc9c; color: #205c22; }
.flash-error { background: #fbe3e3; border: 1px solid #e0a0a0; color: #8A1F1F; }
.alert { background: #fdf0d3; border: 1px solid #e0c06a; padding: 10px 14px; border-radius: 4px; margin: 10px 0; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--brand-primary); }
.login-card { background: #fff; border-radius: 8px; padding: 28px 30px; width: 380px; max-width: 92vw; border-top: 5px solid var(--brand-secondary); }
.login-card h1 { font-size: 20px; text-align: center; }
.login-sub { text-align: center; color: #555; margin-top: -8px; }
.login-note { font-size: 13px; color: #666; text-align: center; margin-top: 14px; }

/* Impresión (boletas, kardex, listas oficiales) */
@media print {
  .sidebar, .btn, .no-print { display: none !important; }
  .shell { display: block; }
  .main { padding: 0; }
  body { background: #fff; }
}
@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; }
  .main { padding: 16px; }
  table { font-size: 13px; }
}

/* Escudo institucional (assets/logo.png): si no existe el archivo,
   solo se muestra el nombre de la universidad. */
.brand-logo { display: block; max-width: 110px; max-height: 80px; margin-bottom: 6px; }
.login-logo { display: block; max-width: 150px; max-height: 110px; margin: 0 auto 10px auto; }