:root {
    --azul-principal: #1A237E;
    --azul-claro: #E8EAF6;
    --gris-borde: #DDE1E6;
    --gris-texto: #444;
    --rojo: #C62828;
    --verde: #2E7D32;
    --radio: 8px;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #F5F6F8;
    color: var(--gris-texto);
}

/* ---------- Login ---------- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1A237E, #283593);
}
.login-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: var(--radio);
    box-shadow: 0 10px 30px rgba(0,0,0,.25);
    width: 100%;
    max-width: 380px;
}
.login-card h1 { margin: 0 0 .25rem; font-size: 1.3rem; color: var(--azul-principal); }
.login-card .subtitulo { margin: 0 0 1.5rem; color: #777; font-size: .9rem; }
.login-card label { display: block; margin-top: 1rem; font-size: .85rem; font-weight: 600; }
.login-card input {
    width: 100%; padding: .6rem; margin-top: .3rem;
    border: 1px solid var(--gris-borde); border-radius: 6px; font-size: 1rem;
}
.login-card button { margin-top: 1.5rem; width: 100%; }

/* ---------- Botones ---------- */
button, .btn-primario, .btn-secundario, .btn-peligro {
    cursor: pointer;
    border: none;
    border-radius: 6px;
    padding: .55rem 1rem;
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}
.btn-primario { background: var(--azul-principal); color: #fff; }
.btn-primario:hover { background: #131a5c; }
.btn-secundario { background: #fff; color: var(--azul-principal); border: 1px solid var(--azul-principal); }
.btn-secundario:hover { background: var(--azul-claro); }
.btn-peligro { background: #fff; color: var(--rojo); border: 1px solid var(--rojo); }
.btn-peligro:hover { background: #fdecea; }

/* ---------- Alertas ---------- */
.alerta { padding: .75rem 1rem; border-radius: 6px; margin-bottom: 1rem; font-size: .9rem; }
.alerta-error { background: #fdecea; color: var(--rojo); }
.alerta-ok { background: #eaf7ec; color: var(--verde); }
.alerta-info { background: var(--azul-claro); color: var(--azul-principal); }

/* ---------- Topbar ---------- */
.topbar {
    display: flex; justify-content: space-between; align-items: center;
    background: #fff; padding: .8rem 1.5rem; border-bottom: 1px solid var(--gris-borde);
}
.topbar-titulo h1 { margin: 0; font-size: 1.1rem; color: var(--azul-principal); }
.topbar-titulo span { font-size: .8rem; color: #888; }
.topbar-usuario { display: flex; gap: .6rem; align-items: center; font-size: .9rem; }

/* ---------- Layout calendario ---------- */
.contenedor { display: flex; gap: 1.5rem; padding: 1.5rem; align-items: flex-start; }
.panel-areas {
    width: 220px; background: #fff; border-radius: var(--radio);
    padding: 1rem; border: 1px solid var(--gris-borde); flex-shrink: 0;
}
.panel-areas h2 { font-size: .95rem; margin-top: 0; }
#lista-areas { list-style: none; padding: 0; margin: 0; max-height: 60vh; overflow-y: auto; }
#lista-areas li { margin-bottom: .5rem; font-size: .82rem; }
#lista-areas label { display: flex; align-items: center; gap: .4rem; cursor: pointer; }
#lista-areas em { color: #999; font-style: normal; font-size: .7rem; }
.chip-color { width: 12px; height: 12px; border-radius: 3px; display: inline-block; flex-shrink: 0; }

.calendario { flex: 1; background: #fff; border-radius: var(--radio); border: 1px solid var(--gris-borde); padding: 1rem; }
.calendario-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.calendario-nav h2 { margin: 0; font-size: 1.2rem; color: var(--azul-principal); text-transform: capitalize; }

.grilla-dias-header {
    display: grid; grid-template-columns: repeat(7, 1fr);
    font-size: .78rem; font-weight: 700; color: #888; text-align: center; margin-bottom: .3rem;
}
.grilla-mes {
    display: grid; grid-template-columns: repeat(7, 1fr); grid-auto-rows: minmax(90px, auto);
    gap: 4px;
}
.celda-dia {
    border: 1px solid var(--gris-borde); border-radius: 6px; padding: 4px;
    background: #fff; overflow: hidden; cursor: pointer;
}
.celda-dia:hover { background: #FAFBFF; }
.celda-dia.fuera-de-mes { background: #F7F7F8; color: #bbb; }
.celda-dia.hoy { border: 2px solid var(--azul-principal); }
.celda-numero { font-size: .78rem; font-weight: 700; margin-bottom: 2px; }
.celda-hitos { display: flex; flex-direction: column; gap: 2px; }
.etiqueta-hito {
    color: #fff; font-size: .68rem; padding: 1px 4px; border-radius: 3px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ---------- Modal ---------- */
.modal-fondo {
    position: fixed; inset: 0; background: rgba(0,0,0,.4);
    display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal-fondo.oculto { display: none; }
.modal-caja {
    background: #fff; border-radius: var(--radio); padding: 1.5rem;
    width: 100%; max-width: 440px; max-height: 90vh; overflow-y: auto; position: relative;
}
.modal-cerrar {
    position: absolute; right: 1rem; top: .8rem; background: none; border: none;
    font-size: 1.4rem; color: #999; padding: 0;
}
#form-hito label { display: block; margin-top: .8rem; font-size: .85rem; font-weight: 600; }
#form-hito input, #form-hito select, #form-hito textarea {
    width: 100%; padding: .5rem; margin-top: .3rem;
    border: 1px solid var(--gris-borde); border-radius: 6px; font-size: .9rem; font-family: inherit;
}
.fila-doble { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.modal-acciones { display: flex; justify-content: space-between; margin-top: 1.5rem; }
.oculto { display: none !important; }

/* ---------- Admin ---------- */
.contenedor-admin { padding: 1.5rem; max-width: 900px; margin: 0 auto; }
.tarjeta { background: #fff; border: 1px solid var(--gris-borde); border-radius: var(--radio); padding: 1.2rem; margin-bottom: 1.5rem; }
.form-usuario { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.form-usuario label { font-size: .85rem; font-weight: 600; }
.form-usuario input, .form-usuario select { width: 100%; padding: .5rem; margin-top: .3rem; border: 1px solid var(--gris-borde); border-radius: 6px; }
.form-usuario button { grid-column: 1 / -1; margin-top: .5rem; }
.tabla-admin { width: 100%; border-collapse: collapse; font-size: .85rem; }
.tabla-admin th, .tabla-admin td { text-align: left; padding: .5rem; border-bottom: 1px solid var(--gris-borde); }

@media (max-width: 800px) {
    .contenedor { flex-direction: column; }
    .panel-areas { width: 100%; }
    .form-usuario { grid-template-columns: 1fr; }
}