:root {
    --azul-primario: #2f6fb0;
    --azul-oscuro: #1e4c8c;
    --fondo: #f4f7fb;
    --tarjeta: #ffffff;
    --borde: #e1e8f0;
    --texto: #2c3e50;
    --texto-suave: #6b7a8f;
    --exito: #2e9e5b;
    --alerta: #d99a2b;
    --peligro: #c0392b;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--fondo);
    color: var(--texto);
}

.topbar {
    background: linear-gradient(135deg, var(--azul-primario), var(--azul-oscuro));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    flex-wrap: wrap;
    gap: 10px;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.main-nav a {
    color: #eaf1fb;
    text-decoration: none;
    font-size: 0.92rem;
    padding: 6px 4px;
    border-bottom: 2px solid transparent;
}

.main-nav a:hover {
    border-bottom: 2px solid #ffffff;
}

.user-box {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.link-button {
    background: none;
    border: none;
    color: #eaf1fb;
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.9rem;
}

.container {
    max-width: 1200px;
    margin: 24px auto;
    padding: 0 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.page-header h1 {
    font-size: 1.4rem;
    color: var(--azul-oscuro);
    margin: 0;
}

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

.btn-primary {
    background: var(--azul-primario);
    color: #fff;
}
.btn-primary:hover { background: var(--azul-oscuro); }

.btn-secondary {
    background: #eef2f7;
    color: var(--texto);
    border: 1px solid var(--borde);
}

.btn-danger {
    background: #fdecea;
    color: var(--peligro);
    border: 1px solid #f5c6c1;
}

.btn-pdf {
    background: #fff3e0;
    color: #b5560a;
    border: 1px solid #ffd9a8;
}

.card {
    background: var(--tarjeta);
    border: 1px solid var(--borde);
    border-radius: 10px;
    padding: 18px;
    box-shadow: 0 1px 3px rgba(30, 76, 140, 0.06);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--tarjeta);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--azul-primario);
    color: #fff;
}

th, td {
    padding: 10px 12px;
    text-align: left;
    font-size: 0.88rem;
    border-bottom: 1px solid var(--borde);
}

tbody tr:hover {
    background: #f0f5fb;
}

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
}

.badge-verde { background: #e5f6ec; color: var(--exito); }
.badge-amarillo { background: #fdf3e0; color: var(--alerta); }
.badge-rojo { background: #fdecea; color: var(--peligro); }
.badge-gris { background: #eef1f5; color: var(--texto-suave); }
.badge-azul { background: #e7f0fb; color: var(--azul-primario); }

form.form-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 720px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--texto-suave);
    margin-bottom: 4px;
    display: block;
}

input[type=text], input[type=password], input[type=number], input[type=date],
input[type=url], select, textarea {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--borde);
    border-radius: 6px;
    font-size: 0.92rem;
    background: #fbfcfe;
}

textarea { resize: vertical; min-height: 90px; font-family: inherit; }

.acciones-tabla { display: flex; gap: 10px; }
.acciones-tabla a { font-size: 0.85rem; text-decoration: none; }
.acciones-tabla .editar { color: var(--azul-primario); }
.acciones-tabla .eliminar { color: var(--peligro); }

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--tarjeta);
    border: 1px solid var(--borde);
    border-radius: 10px;
    padding: 18px;
    border-left: 5px solid var(--azul-primario);
}

.stat-card .valor { font-size: 1.8rem; font-weight: 700; color: var(--azul-oscuro); }
.stat-card .etiqueta { font-size: 0.85rem; color: var(--texto-suave); }
.stat-card.alerta { border-left-color: var(--alerta); }

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--azul-primario), var(--azul-oscuro));
}

.login-card {
    background: #fff;
    border-radius: 14px;
    padding: 34px;
    width: 100%;
    max-width: 360px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.login-card h1 {
    font-size: 1.3rem;
    color: var(--azul-oscuro);
    margin-bottom: 4px;
}

.login-card p.subtitulo {
    color: var(--texto-suave);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.alerta-error {
    background: #fdecea;
    color: var(--peligro);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 14px;
}

.alerta-info {
    background: #e5f6ec;
    color: var(--exito);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 14px;
}

.reportes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.reporte-item {
    background: var(--tarjeta);
    border: 1px solid var(--borde);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}

.reporte-item .icono { font-size: 2rem; margin-bottom: 6px; }

.busqueda-box { margin-bottom: 14px; }

.contenido-articulo {
    white-space: pre-wrap;
    line-height: 1.6;
}

.data-etiqueta { font-size: 0.8rem; color: var(--texto-suave); }
input[readonly] { background: #f0f2f5; color: var(--texto-suave); }