/* ============================================================
   Sistema de Horarios por NRC — SENATI
   Hoja de estilos única (sin dependencias externas)
   ============================================================ */

:root {
    --marca: #1e3a8a;
    --marca-oscuro: #172554;
    --oscuro: #0f172a;
    --oscuro-2: #1e293b;
    --texto: #1f2937;
    --texto-suave: #64748b;
    --fondo: #f1f5f9;
    --blanco: #ffffff;
    --borde: #e2e8f0;
    --verde: #15803d;
    --verde-fondo: #f0fdf4;
    --marca-suave: #eff6ff;
    --amarillo-fondo: #fffbeb;
    --sombra: 0 1px 3px rgba(2, 6, 23, .06), 0 8px 24px rgba(2, 6, 23, .05);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
    background: var(--fondo);
    color: var(--texto);
    font-size: 15px;
    line-height: 1.55;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------- Barra de navegación ---------- */

.navbar {
    background: var(--oscuro);
    color: #e2e8f0;
    display: flex;
    align-items: center;
    gap: 26px;
    padding: 10px 26px;
    flex-wrap: wrap;
    border-bottom: 3px solid var(--marca);
}

.nav-marca {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #fff;
}

.nav-logo-img {
    display: block;
    height: 34px;
    width: auto;
    flex: none;
}

@media (max-width: 640px) {
    .nav-logo-img { height: 28px; }
}

.nav-titulos { display: flex; flex-direction: column; line-height: 1.25; }
.nav-titulos strong { font-size: 15px; }
.nav-titulos small { color: #94a3b8; font-size: 12px; }

.nav-links { display: flex; gap: 6px; flex-wrap: wrap; }

.nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: background .15s ease, color .15s ease;
}

.nav-links a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.nav-links a.activo { background: var(--marca); color: #fff; }

.nav-usuario {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-datos { display: flex; flex-direction: column; line-height: 1.2; text-align: right; }
.nav-datos strong { font-size: 14px; color: #fff; }
.nav-datos small { color: #94a3b8; font-size: 12px; }

/* ---------- Contenido ---------- */

.contenedor {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 28px 22px 60px;
    flex: 1;
}

.cabecera-pagina {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.cabecera-pagina h1 {
    margin: 0 0 4px;
    font-size: 24px;
    color: var(--oscuro);
}

.cabecera-pagina p {
    margin: 0;
    color: var(--texto-suave);
}

.tarjeta {
    background: var(--blanco);
    border: 1px solid var(--borde);
    border-radius: 14px;
    box-shadow: var(--sombra);
    padding: 22px 24px;
    margin-bottom: 20px;
}

.tarjeta h2 {
    margin: 0 0 10px;
    font-size: 17px;
    color: var(--oscuro);
}

.texto-ayuda {
    color: var(--texto-suave);
    font-size: 13.5px;
    margin: 8px 0 14px;
    line-height: 1.7;
}

.texto-ayuda code {
    background: var(--fondo);
    border: 1px solid var(--borde);
    border-radius: 5px;
    padding: 1px 6px;
    font-size: 12.5px;
    color: #1e40af;
    white-space: nowrap;
}

.vacio {
    color: var(--texto-suave);
    text-align: center;
    padding: 26px 10px;
    margin: 0;
}

/* ---------- Formularios ---------- */

.campo { display: flex; flex-direction: column; gap: 5px; }
.campo > span { font-size: 13px; font-weight: 600; color: var(--oscuro-2); }

input[type="text"], input[type="email"], input[type="password"], select, input[type="file"].input-archivo {
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 9px;
    font-size: 14.5px;
    font-family: inherit;
    background: #fff;
    color: var(--texto);
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

input:focus, select:focus {
    border-color: var(--marca);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, .12);
}

.form-subir {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-subir .input-archivo { flex: 1; min-width: 240px; }

.form-busqueda {
    display: flex;
    gap: 14px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-busqueda .campo { min-width: 150px; }
.form-busqueda .campo-crece { flex: 1; min-width: 200px; }

.form-busqueda .btn { margin-bottom: 1px; }

.form-contrasena {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    align-items: end;
    max-width: 860px;
}

.form-inline { display: inline-block; margin: 0 4px 4px 0; }

/* ---------- Botones ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid transparent;
    border-radius: 9px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
    line-height: 1.2;
}

.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 7px; }
.btn-bloque { width: 100%; }

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

.btn-fantasma {
    background: transparent;
    color: inherit;
    border-color: rgba(148, 163, 184, .5);
}
.btn-fantasma:hover { border-color: var(--marca); color: var(--marca); }
.navbar .btn-fantasma { color: #e2e8f0; border-color: rgba(255, 255, 255, .25); }
.navbar .btn-fantasma:hover { color: #fff; border-color: #fff; background: rgba(255, 255, 255, .08); }

.btn-peligro {
    background: transparent;
    color: #1e40af;
    border-color: #93c5fd;
}
.btn-peligro:hover { background: var(--marca-suave); border-color: #2563eb; }

/* ---------- Alertas ---------- */

.alerta {
    border-radius: 10px;
    padding: 12px 16px;
    margin: 0 0 16px;
    font-size: 14px;
    border: 1px solid transparent;
}

.alerta.ok {
    background: var(--verde-fondo);
    border-color: #bbf7d0;
    color: #166534;
}

.alerta.error {
    background: var(--marca-suave);
    border-color: #bfdbfe;
    color: #1e3a8a;
}

.alerta.aviso {
    background: var(--amarillo-fondo);
    border-color: #fde68a;
    color: #92400e;
}

/* ---------- Tablas ---------- */

.tabla-scroll {
    overflow-x: auto;
    border: 1px solid var(--borde);
    border-radius: 10px;
    margin: 6px 0 4px;
}

.tabla {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 640px;
}

.tabla-horario { min-width: 1100px; }

.tabla th {
    background: #f8fafc;
    color: var(--oscuro-2);
    text-align: left;
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: .4px;
    padding: 10px 12px;
    border-bottom: 2px solid var(--borde);
    white-space: nowrap;
}

.tabla td {
    padding: 9px 12px;
    border-bottom: 1px solid #eef2f7;
    vertical-align: middle;
}

.tabla tbody tr:hover { background: #f8fafc; }
.tabla tbody tr:last-child td { border-bottom: none; }

.tabla .td-nombre { font-weight: 600; color: var(--oscuro); }
.tabla .td-nrc { white-space: nowrap; }
.tabla .td-nrc b { color: var(--marca); font-size: 14.5px; }
.tabla .td-curso { max-width: 260px; }
.tabla .td-horario { white-space: nowrap; font-variant-numeric: tabular-nums; }
.tabla .td-acciones { white-space: nowrap; }

/* Columna BLOQUE: dato clave del sistema (NRC -> bloque) */
.tabla .col-bloque { color: var(--marca-oscuro); }
.tabla .td-bloque {
    background: var(--amarillo-fondo);
    border-left: 3px solid var(--marca);
    font-weight: 700;
    color: var(--oscuro);
    white-space: nowrap;
}

.col-dia { text-align: center !important; white-space: nowrap; }
.tabla th.col-dia { text-align: center !important; }

.fila-apagada { opacity: .55; }

.estado {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.estado.activo { background: var(--verde-fondo); color: var(--verde); border: 1px solid #bbf7d0; }
.estado.inactivo { background: #f1f5f9; color: var(--texto-suave); border: 1px solid var(--borde); }
.estado.admin-badge { background: #ede9fe; color: #6d28d9; border: 1px solid #ddd6fe; }

.texto-suave { color: var(--texto-suave); font-weight: 400; }

.input-chico {
    width: 170px;
    max-width: 100%;
    padding: 6px 10px;
    font-size: 13px;
    border: 1px solid #cbd5e1;
    border-radius: 7px;
}

.form-reset { display: inline-flex; gap: 6px; align-items: center; flex-wrap: wrap; }

.form-usuarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    align-items: end;
    max-width: 960px;
    margin-top: 4px;
}

.resumen-busqueda {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--oscuro-2);
}

.nota-limite { color: var(--texto-suave); font-size: 13px; }

.chip {
    display: inline-block;
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
}

.chip-verde { background: var(--verde-fondo); color: var(--verde); border: 1px solid #bbf7d0; }
.chip-gris { background: #f1f5f9; color: var(--texto-suave); border: 1px solid var(--borde); }

/* ---------- Lista de comprobaciones del instalador ---------- */

.lista-check {
    list-style: none;
    padding: 0;
    margin: 12px 0 18px;
    line-height: 2;
}

.lista-check li { border-bottom: 1px dashed var(--borde); padding: 4px 2px; }
.lista-check li:last-child { border-bottom: none; }
.lista-check small { color: var(--texto-suave); line-height: 1.6; display: inline-block; margin-top: 2px; }

/* ---------- Pantalla de login ---------- */

.login-body {
    background: linear-gradient(140deg, #0f172a 0%, #1e293b 55%, #27272a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
    min-height: 100vh;
}

.login-caja {
    background: var(--blanco);
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
    padding: 38px 40px 28px;
    width: 100%;
    max-width: 420px;
    border-top: 6px solid var(--marca);
}

.login-caja-ancha { max-width: 640px; }

.login-caja h1 {
    margin: 14px 0 2px;
    font-size: 21px;
    color: var(--oscuro);
    text-align: center;
}

.login-caja form { margin-top: 18px; display: flex; flex-direction: column; gap: 14px; }

.login-logo { text-align: center; }
.login-logo-img {
    display: inline-block;
    height: 52px;
    width: auto;
    margin: 2px auto 10px;
}
.login-sub { text-align: center; color: var(--texto-suave); font-size: 13.5px; margin: 4px 0 6px; }

.login-pie {
    text-align: center;
    color: #94a3b8;
    font-size: 12px;
    margin: 22px 0 0;
}

/* ---------- Pie de página ---------- */

.pie {
    background: var(--oscuro);
    color: #64748b;
    text-align: center;
    padding: 16px 20px;
    font-size: 12.5px;
    margin-top: auto;
}

.pie p { margin: 0; }

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
    .navbar { padding: 10px 14px; gap: 12px; }
    .nav-usuario { margin-left: 0; width: 100%; justify-content: space-between; }
    .contenedor { padding: 20px 12px 40px; }
    .tarjeta { padding: 16px 14px; }
    .login-caja { padding: 26px 20px 20px; }
    .cabecera-pagina h1 { font-size: 20px; }
    .form-busqueda .campo { min-width: 130px; }
}