:root {
    --azul: #1F4E78;
    --azul-claro: #E8F0F8;
    --verde: #1E7E34;
    --verde-bg: #DFF5E1;
    --naranja: #B36B00;
    --naranja-bg: #FFF3D6;
    --gris: #666;
    --borde: #DDD;
}

* { box-sizing: border-box; }

body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    background: #F7F8FA;
    color: #222;
}

.container { max-width: 1100px; margin: 0 auto; padding: 24px; }

/* --- Topbar --- */
.topbar {
    background: var(--azul);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.topbar-brand { font-weight: bold; font-size: 1.1em; }
.topbar-nav a {
    color: #fff;
    text-decoration: none;
    margin-right: 18px;
    font-size: 0.95em;
}
.topbar-nav a:hover { text-decoration: underline; }
.topbar-user { font-size: 0.9em; }
.topbar-user a { color: #fff; }

/* --- Login --- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--azul-claro);
}
.login-box {
    background: #fff;
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.1);
    width: 320px;
}
.login-box h1 { font-size: 1.3em; color: var(--azul); margin-top: 0; }
.login-box label { display: block; margin-top: 12px; margin-bottom: 4px; font-size: 0.9em; color: var(--gris); }
.login-box input { width: 100%; padding: 8px; border: 1px solid var(--borde); border-radius: 4px; }
.login-box button { margin-top: 18px; width: 100%; }

/* --- General --- */
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.page-head h1 { color: var(--azul); font-size: 1.4em; }
.hint { color: var(--gris); font-size: 0.9em; margin-bottom: 16px; }

.btn {
    background: #eee;
    color: #222;
    border: 1px solid var(--borde);
    padding: 8px 14px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9em;
    display: inline-block;
}
.btn-primary { background: var(--azul); color: #fff; border-color: var(--azul); }
.btn-secondary { background: #fff; }
.btn-danger { background: #FDE8E8; color: #A32424; border-color: #F5C6C6; }
.btn-small { padding: 4px 10px; font-size: 0.8em; }

.filters { display: flex; gap: 16px; align-items: end; margin-bottom: 16px; flex-wrap: wrap; }
.filters label { display: flex; flex-direction: column; font-size: 0.85em; color: var(--gris); }
.filters input, .filters select { padding: 6px; border: 1px solid var(--borde); border-radius: 4px; margin-top: 4px; }

.summary-cards { display: flex; gap: 16px; margin-bottom: 20px; }
.card { background: #fff; border: 1px solid var(--borde); border-radius: 6px; padding: 14px 18px; flex: 1; }
.card-label { display: block; font-size: 0.8em; color: var(--gris); }
.card-value { display: block; font-size: 1.4em; font-weight: bold; color: var(--azul); }
.card-warning .card-value { color: var(--naranja); }

.tabla-gastos { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--borde); }
.tabla-gastos th, .tabla-gastos td { padding: 10px 12px; border-bottom: 1px solid var(--borde); text-align: left; font-size: 0.9em; }
.tabla-gastos th { background: var(--azul); color: #fff; }
.row-pagado { background: var(--verde-bg); }
.row-pendiente { background: var(--naranja-bg); }
.row-inactivo { opacity: 0.5; }
.empty-row { text-align: center; color: var(--gris); padding: 24px; }

.badge { padding: 3px 8px; border-radius: 10px; font-size: 0.78em; }
.badge-pagado { background: var(--verde); color: #fff; }
.badge-pendiente { background: var(--naranja); color: #fff; }

.form-box { background: #fff; border: 1px solid var(--borde); border-radius: 6px; padding: 20px; max-width: 480px; }
.form-box label { display: block; margin-bottom: 14px; font-size: 0.9em; color: var(--gris); }
.form-box input, .form-box select, .form-box textarea {
    width: 100%; padding: 8px; border: 1px solid var(--borde); border-radius: 4px; margin-top: 4px; font-family: inherit;
}

.alert { padding: 10px 14px; border-radius: 4px; margin-bottom: 16px; font-size: 0.9em; }
.alert-error { background: #FDE8E8; color: #A32424; border: 1px solid #F5C6C6; }
.alert-ok { background: var(--verde-bg); color: var(--verde); border: 1px solid #B7E4BC; }

h2 { color: var(--azul); font-size: 1.15em; margin-top: 32px; }