/* sigma.css — Sistema de diseño Sigma Energy */

/* ── Variables ──────────────────────────────────────────────── */
:root {
    --color-nav:        #1a8c40;   /* Sobreescrito por proyecto */
    --color-primario:   #1a8c40;
    --color-primario-h: #156e32;
    --color-peligro:    #dc2626;
    --color-alerta:     #d97706;
    --color-info:       #2563eb;
    --color-ok:         #16a34a;

    --color-fondo:      #f8f9fa;
    --color-superficie: #ffffff;
    --color-borde:      #e2e8f0;
    --color-borde-2:    #cbd5e1;

    --color-texto:      #0f172a;
    --color-texto-2:    #475569;
    --color-texto-3:    #94a3b8;

    --radio-sm:  4px;
    --radio:     8px;
    --radio-lg:  12px;
    --radio-xl:  16px;

    --sombra-sm: 0 1px 3px rgba(0,0,0,.08);
    --sombra:    0 4px 12px rgba(0,0,0,.08);
    --sombra-lg: 0 8px 24px rgba(0,0,0,.10);

    --fuente:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --fuente-mono: 'SF Mono', 'Fira Code', monospace;

    --nav-h:    56px;
    --ancho-max: 1280px;
    --contenedor-px: 1.25rem;

    --transition: 150ms ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
    font-family: var(--fuente);
    color: var(--color-texto);
    background: var(--color-fondo);
    line-height: 1.5;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}
a { color: var(--color-primario); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
ul[role="list"] { list-style: none; }

/* ── Utilidades ─────────────────────────────────────────────── */
.contenedor {
    width: 100%;
    max-width: var(--ancho-max);
    margin-inline: auto;
    padding-inline: var(--contenedor-px);
}
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.texto-centro { text-align: center; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.flex { display: flex; align-items: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: var(--color-nav);
    height: var(--nav-h);
    box-shadow: var(--sombra);
}
.navbar-inner {
    height: 100%;
    display: flex; align-items: center; gap: 1rem;
}
.navbar-logo {
    display: flex; align-items: center; gap: .5rem;
    color: #fff; font-weight: 700; font-size: 1.1rem;
    text-decoration: none; flex-shrink: 0;
}
.navbar-logo:hover { text-decoration: none; opacity: .9; }
.navbar-marca { font-weight: 700; letter-spacing: -.01em; }

.navbar-menu {
    display: flex; gap: .25rem;
    list-style: none; margin-left: auto;
}
.navbar-link {
    display: flex; align-items: center; gap: .4rem;
    padding: .45rem .8rem;
    border-radius: var(--radio);
    color: rgba(255,255,255,.85);
    font-size: .875rem; font-weight: 500;
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}
.navbar-link:hover,
.navbar-link.activo {
    background: rgba(255,255,255,.15);
    color: #fff;
    text-decoration: none;
}
.navbar-link svg { opacity: .8; flex-shrink: 0; }

.navbar-acciones {
    display: flex; align-items: center; gap: .75rem;
    margin-left: auto;
}
@media (min-width: 769px) { .navbar-acciones { margin-left: 0; } }

/* Notificaciones */
.navbar-notif {
    position: relative; display: flex;
    color: rgba(255,255,255,.85);
    padding: .3rem; border-radius: var(--radio);
    transition: background var(--transition);
}
.navbar-notif:hover { background: rgba(255,255,255,.15); }
.notif-badge {
    position: absolute; top: 0; right: 0;
    background: var(--color-peligro);
    color: #fff; font-size: .6rem; font-weight: 700;
    min-width: 16px; height: 16px; border-radius: 99px;
    display: flex; align-items: center; justify-content: center;
    padding: 0 3px;
}

/* User dropdown */
.navbar-user { position: relative; }
.user-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    background: rgba(255,255,255,.25);
    color: #fff; font-size: .8rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: background var(--transition);
    border: 2px solid rgba(255,255,255,.4);
    user-select: none;
}
.navbar-user:hover .user-avatar { background: rgba(255,255,255,.35); }
.user-dropdown {
    position: absolute; right: 0; top: calc(100% + 8px);
    background: var(--color-superficie);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-lg);
    box-shadow: var(--sombra-lg);
    min-width: 200px;
    padding: .5rem 0;
    display: none;
    z-index: 200;
}
.user-dropdown.abierto { display: block; }
.dropdown-info { padding: .75rem 1rem; }
.dropdown-info strong { display: block; font-size: .9rem; }
.dropdown-rol { font-size: .75rem; color: var(--color-texto-2); }
.user-dropdown hr { border: none; border-top: 1px solid var(--color-borde); margin: .25rem 0; }
.user-dropdown a {
    display: block; padding: .55rem 1rem;
    font-size: .875rem; color: var(--color-texto);
    transition: background var(--transition);
}
.user-dropdown a:hover { background: var(--color-fondo); text-decoration: none; }
.dropdown-logout { color: var(--color-peligro) !important; }

/* Hamburguesa */
.navbar-hamburger {
    display: none;
    flex-direction: column; justify-content: center; gap: 5px;
    width: 36px; height: 36px;
    background: none; border: none; padding: .4rem;
    border-radius: var(--radio);
    transition: background var(--transition);
}
.navbar-hamburger:hover { background: rgba(255,255,255,.15); }
.navbar-hamburger span {
    display: block; height: 2px; width: 100%;
    background: #fff; border-radius: 2px;
    transition: transform .2s, opacity .2s;
}
.navbar-hamburger.abierto span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-hamburger.abierto span:nth-child(2) { opacity: 0; }
.navbar-hamburger.abierto span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menú móvil */
.mobile-menu {
    display: none;
    position: fixed; inset: var(--nav-h) 0 0 0; z-index: 99;
    background: var(--color-superficie);
    overflow-y: auto;
    padding: 1rem;
    transform: translateX(100%);
    transition: transform .25s ease;
}
.mobile-menu.abierto { transform: translateX(0); }
.mobile-link {
    display: flex; align-items: center; gap: .75rem;
    padding: .85rem 1rem;
    border-radius: var(--radio);
    color: var(--color-texto); font-size: 1rem;
    transition: background var(--transition);
}
.mobile-link:hover { background: var(--color-fondo); text-decoration: none; }
.mobile-link-danger { color: var(--color-peligro); }
.mobile-sep { height: 1px; background: var(--color-borde); margin: .5rem 0; }

/* ── Contenido principal ─────────────────────────────────────── */
#contenido-principal { flex: 1; padding-bottom: 3rem; }
.seccion { padding-top: 2rem; }

/* ── Tarjetas ───────────────────────────────────────────────── */
.card {
    background: var(--color-superficie);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-lg);
    box-shadow: var(--sombra-sm);
    padding: 1.5rem;
}
.card-titulo {
    font-size: 1rem; font-weight: 600;
    margin-bottom: 1rem; color: var(--color-texto);
}

/* ── Grid de dashboard ──────────────────────────────────────── */
.grid-kpi {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}
.kpi {
    background: var(--color-superficie);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-lg);
    padding: 1.25rem 1.5rem;
    display: flex; flex-direction: column; gap: .4rem;
}
.kpi-label { font-size: .78rem; color: var(--color-texto-2); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
.kpi-valor { font-size: 2rem; font-weight: 700; line-height: 1; color: var(--color-texto); }
.kpi-sub { font-size: .8rem; color: var(--color-texto-3); }
.kpi-ok    { border-top: 3px solid var(--color-ok); }
.kpi-info  { border-top: 3px solid var(--color-info); }
.kpi-alerta{ border-top: 3px solid var(--color-alerta); }
.kpi-peligro{border-top: 3px solid var(--color-peligro); }

/* ── Tablas ─────────────────────────────────────────────────── */
.tabla-wrap { overflow-x: auto; border-radius: var(--radio-lg); border: 1px solid var(--color-borde); }
table.tabla {
    width: 100%; border-collapse: collapse;
    font-size: .875rem; background: var(--color-superficie);
}
.tabla th {
    padding: .75rem 1rem; text-align: left;
    font-size: .75rem; font-weight: 600;
    color: var(--color-texto-2);
    background: var(--color-fondo);
    text-transform: uppercase; letter-spacing: .04em;
    border-bottom: 1px solid var(--color-borde);
    white-space: nowrap;
}
.tabla td {
    padding: .8rem 1rem;
    border-bottom: 1px solid var(--color-borde);
    vertical-align: middle;
}
.tabla tr:last-child td { border-bottom: none; }
.tabla tr:hover td { background: #f8fafc; }
.tabla-vacia { text-align: center; padding: 3rem; color: var(--color-texto-3); font-size: .9rem; }

/* ── Badges de estado ───────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center;
    padding: .2rem .6rem; border-radius: 99px;
    font-size: .72rem; font-weight: 600;
    white-space: nowrap;
}
.badge-ok     { background: #dcfce7; color: #15803d; }
.badge-info   { background: #dbeafe; color: #1d4ed8; }
.badge-alerta { background: #fef3c7; color: #b45309; }
.badge-error  { background: #fee2e2; color: #b91c1c; }
.badge-gris   { background: #f1f5f9; color: #475569; }

/* ── Formularios ────────────────────────────────────────────── */
.campo-grupo {
    display: flex; flex-direction: column; gap: .35rem;
    margin-bottom: 1rem;
}
.campo-grupo label {
    font-size: .8rem; font-weight: 600;
    color: var(--color-texto-2);
}
.campo-grupo input,
.campo-grupo select,
.campo-grupo textarea {
    width: 100%;
    padding: .6rem .85rem;
    border: 1.5px solid var(--color-borde-2);
    border-radius: var(--radio);
    font-size: .9rem; font-family: inherit;
    color: var(--color-texto);
    background: var(--color-superficie);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.campo-grupo input:focus,
.campo-grupo select:focus,
.campo-grupo textarea:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 0 0 3px rgba(26,140,64,.12);
}
.campo-grupo textarea { resize: vertical; min-height: 90px; }
.unidad { font-size: .72rem; color: var(--color-texto-3); }

/* ── Botones ────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
    padding: .55rem 1.25rem;
    border-radius: var(--radio);
    font-size: .875rem; font-weight: 600;
    border: none; cursor: pointer;
    transition: background var(--transition), opacity var(--transition), transform .1s;
    text-decoration: none; white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn:hover { opacity: .88; text-decoration: none; }
.btn-primario  { background: var(--color-primario);   color: #fff; }
.btn-peligro   { background: var(--color-peligro);    color: #fff; }
.btn-info      { background: var(--color-info);        color: #fff; }
.btn-outline   { background: transparent; border: 1.5px solid var(--color-borde-2); color: var(--color-texto); }
.btn-outline:hover { background: var(--color-fondo); }
.btn-sm { padding: .35rem .85rem; font-size: .8rem; }
.btn-full { width: 100%; }

/* Alias legacy */
.btn-login      { background: var(--color-primario); color: #fff; border: none; padding: .7rem 1.5rem; border-radius: var(--radio); font-size: .95rem; font-weight: 600; width: 100%; display: block; text-align: center; transition: background var(--transition); }
.btn-login:hover { background: var(--color-primario-h); text-decoration: none; }
.boton-verde-vivo { background: var(--color-ok);      color: #fff; }
.boton-rojo       { background: var(--color-peligro);  color: #fff; }
.boton-azul       { background: var(--color-info);     color: #fff; }

/* ── Alertas ────────────────────────────────────────────────── */
.alerta {
    padding: .8rem 1rem; border-radius: var(--radio);
    font-size: .875rem; position: relative;
    margin-bottom: .75rem;
    border-left: 4px solid;
}
.alerta-ok     { background: #f0fdf4; border-color: var(--color-ok);     color: #14532d; }
.alerta-error  { background: #fef2f2; border-color: var(--color-peligro);color: #7f1d1d; }
.alerta-alerta { background: #fffbeb; border-color: var(--color-alerta); color: #78350f; }
.alerta-info   { background: #eff6ff; border-color: var(--color-info);   color: #1e3a8a; }
.alerta-cerrar {
    position: absolute; right: .75rem; top: .75rem;
    background: none; border: none; cursor: pointer;
    font-size: 1rem; opacity: .6; line-height: 1;
}
.alerta-cerrar:hover { opacity: 1; }
.flash-container { padding-top: 1rem; }

/* ── Página de error ────────────────────────────────────────── */
.pagina-error {
    text-align: center; padding: 6rem 1rem;
}
.error-ico { font-size: 4rem; margin-bottom: 1rem; }
.pagina-error h1 { font-size: 1.75rem; margin-bottom: .5rem; }
.pagina-error p { color: var(--color-texto-2); }

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
    border-top: 1px solid var(--color-borde);
    background: var(--color-superficie);
    padding: 1rem;
    margin-top: auto;
}
.footer-inner {
    display: flex; align-items: center; gap: 1rem;
    font-size: .78rem; color: var(--color-texto-3);
    flex-wrap: wrap;
}
.footer-marca { font-weight: 600; color: var(--color-texto-2); }
.footer-copy { flex: 1; }
.footer-version { font-family: var(--fuente-mono); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .navbar-menu  { display: none; }
    .navbar-hamburger { display: flex; }
    .mobile-menu  { display: block; }
    .navbar-acciones { margin-left: auto; }
    .grid-kpi { grid-template-columns: repeat(2, 1fr); }
    .tabla th, .tabla td { padding: .65rem .75rem; font-size: .8rem; }
}
@media (max-width: 480px) {
    :root { --contenedor-px: 1rem; }
    .grid-kpi { grid-template-columns: 1fr 1fr; }
    .card { padding: 1rem; }
}

/* ── Impresión ───────────────────────────────────────────────── */
@media print {
    .navbar, .footer, .flash-container,
    .btn, .alerta-cerrar { display: none !important; }
    body { background: #fff; }
    #contenido-principal { padding: 0; }
}