/* =====================================================================
   NEXBYTE - Panel administrativo
   Reutiliza la paleta de marca del landing (azules sobre fondo oscuro)
   y agrega los componentes propios de un panel: sidebar, tablas,
   tarjetas de estadísticas, modales y línea de tiempo de actividades.
   ===================================================================== */

:root {
    --color-fondo: #050914;
    --color-fondo-alterno: #0a0f22;
    --color-superficie: rgba(255, 255, 255, 0.045);
    --color-superficie-borde: rgba(255, 255, 255, 0.09);
    --color-texto: #eef1fb;
    --color-texto-tenue: #a4acc6;
    --color-texto-suave: #7b84a6;

    --azul-1: #2fa8ff;
    --azul-2: #3b6bf6;
    --azul-3: #7fd6ff;

    --verde: #34d399;
    --amarillo: #fbbf24;
    --rojo: #f87171;
    --morado: #a78bfa;

    --degradado-marca: linear-gradient(120deg, var(--azul-3) 0%, var(--azul-1) 45%, var(--azul-2) 100%);
    --sombra-suave: 0 20px 60px rgba(3, 8, 20, 0.55);
    --sombra-boton: 0 12px 30px rgba(47, 128, 255, 0.35);

    --radio-s: 10px;
    --radio-m: 14px;
    --radio-l: 20px;
    --radio-pastilla: 999px;

    --transicion: 0.25s ease;
    --sidebar-ancho: 260px;
}

* { box-sizing: border-box; }

body.admin-body {
    margin: 0;
    background: var(--color-fondo);
    color: var(--color-texto);
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
    line-height: 1.55;
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------------------------- BOTONES (compartidos) ---------------------------- */
.boton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border: none;
    border-radius: var(--radio-pastilla);
    font-weight: 600;
    font-size: 0.92rem;
    transition: transform var(--transicion), box-shadow var(--transicion), background var(--transicion), color var(--transicion), opacity var(--transicion);
    white-space: nowrap;
}
.boton--primario { background: var(--degradado-marca); color: #04101f; box-shadow: var(--sombra-boton); }
.boton--primario:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(47,128,255,0.4); }
.boton--secundario { background: rgba(255,255,255,0.05); border: 1px solid var(--color-superficie-borde); color: #fff; }
.boton--secundario:hover { background: rgba(255,255,255,0.1); }
.boton--peligro { background: rgba(248,113,113,0.14); color: #fca5a5; border: 1px solid rgba(248,113,113,0.35); }
.boton--peligro:hover { background: rgba(248,113,113,0.24); }
.boton--pequeno { padding: 7px 14px; font-size: 0.82rem; }
.boton--ancho { width: 100%; }
.boton:disabled { opacity: 0.55; cursor: not-allowed; transform: none !important; }

/* ============================== LOGIN / INSTALADOR ============================== */
.admin-login-body {
    margin: 0;
    min-height: 100vh;
    background: var(--color-fondo);
    color: var(--color-texto);
    font-family: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.admin-login__fondo {
    position: absolute; inset: 0;
    background:
        radial-gradient(50% 50% at 20% 15%, rgba(47,168,255,0.22), transparent 70%),
        radial-gradient(45% 45% at 85% 85%, rgba(59,107,246,0.16), transparent 70%);
}
.admin-login__contenedor { position: relative; z-index: 1; width: 100%; padding: 24px; }
.admin-login__tarjeta {
    max-width: 420px;
    margin: 0 auto;
    background: var(--color-superficie);
    border: 1px solid var(--color-superficie-borde);
    border-radius: var(--radio-l);
    padding: 36px 32px;
    box-shadow: var(--sombra-suave);
    backdrop-filter: blur(16px);
}
.admin-login__marca { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 1.1rem; }
.admin-login__marca img { width: 34px; height: 34px; border-radius: 8px; object-fit: cover; }
.admin-login__marca strong { color: var(--azul-3); }
.admin-login__titulo { margin: 0 0 6px; font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; }
.admin-login__subtitulo { margin: 0 0 22px; color: var(--color-texto-tenue); font-size: 0.92rem; }

.admin-alerta { padding: 12px 14px; border-radius: var(--radio-s); font-size: 0.88rem; margin-bottom: 16px; }
.admin-alerta--error { background: rgba(248,113,113,0.12); color: #fca5a5; border: 1px solid rgba(248,113,113,0.3); }
.admin-alerta--exito { background: rgba(52,211,153,0.12); color: #6ee7b7; border: 1px solid rgba(52,211,153,0.3); }
.admin-alerta--info { background: rgba(47,168,255,0.12); color: #93c5fd; border: 1px solid rgba(47,168,255,0.3); }

.admin-form { display: flex; flex-direction: column; gap: 16px; }
.admin-form__campo { display: flex; flex-direction: column; gap: 6px; font-size: 0.86rem; color: var(--color-texto-tenue); }
.admin-form__campo input,
.admin-form__campo select,
.admin-form__campo textarea {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--color-superficie-borde);
    border-radius: var(--radio-s);
    padding: 11px 13px;
    color: var(--color-texto);
    font-size: 0.92rem;
    font-family: inherit;
    transition: border-color var(--transicion);
}
.admin-form__campo input:focus,
.admin-form__campo select:focus,
.admin-form__campo textarea:focus { outline: none; border-color: var(--azul-1); }
.admin-form__campo textarea { resize: vertical; min-height: 90px; }
.admin-form__error { color: #fca5a5; font-size: 0.78rem; }
.admin-form__enviar { margin-top: 6px; }
.admin-form__fila { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .admin-form__fila { grid-template-columns: 1fr; } }
.admin-form__checkbox { flex-direction: row; align-items: center; gap: 8px; }
.admin-form__checkbox input { width: auto; }

/* ============================== LAYOUT DEL PANEL ============================== */
.admin-layout { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: var(--sidebar-ancho);
    flex-shrink: 0;
    background: var(--color-fondo-alterno);
    border-right: 1px solid var(--color-superficie-borde);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.admin-sidebar__marca { display: flex; align-items: center; gap: 10px; padding: 22px 20px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
.admin-sidebar__marca img { width: 32px; height: 32px; border-radius: 8px; object-fit: cover; }
.admin-sidebar__marca strong { color: var(--azul-3); }
.admin-sidebar__badge { margin-left: auto; font-size: 0.65rem; background: rgba(47,168,255,0.15); color: var(--azul-3); padding: 3px 8px; border-radius: var(--radio-pastilla); font-weight: 600; letter-spacing: 0.03em; }

.admin-sidebar__nav { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; flex-grow: 1; }
.admin-sidebar__grupo-titulo { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-texto-suave); padding: 14px 10px 6px; }
.admin-sidebar__link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radio-s);
    color: var(--color-texto-tenue);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background var(--transicion), color var(--transicion);
}
.admin-sidebar__link:hover { background: rgba(255,255,255,0.05); color: #fff; }
.admin-sidebar__link.activo { background: rgba(47,168,255,0.14); color: var(--azul-3); }
.admin-sidebar__link .icono { font-size: 1.05rem; width: 20px; text-align: center; }

.admin-sidebar__pie { padding: 16px 20px; border-top: 1px solid var(--color-superficie-borde); font-size: 0.82rem; color: var(--color-texto-suave); }
.admin-sidebar__usuario { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.admin-sidebar__avatar { width: 34px; height: 34px; border-radius: 50%; background: var(--degradado-marca); display: flex; align-items: center; justify-content: center; color: #04101f; font-weight: 700; font-size: 0.85rem; flex-shrink: 0; }
.admin-sidebar__usuario-nombre { color: #fff; font-weight: 600; font-size: 0.86rem; }

.admin-main { flex-grow: 1; min-width: 0; }
.admin-topbar {
    position: sticky; top: 0; z-index: 20;
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 28px;
    background: rgba(5,9,20,0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-superficie-borde);
}
.admin-topbar__titulo { font-family: 'Space Grotesk', sans-serif; font-size: 1.15rem; margin: 0; }
.admin-topbar__subtitulo { margin: 2px 0 0; font-size: 0.82rem; color: var(--color-texto-suave); }
.admin-topbar__acciones { display: flex; align-items: center; gap: 10px; }
.admin-topbar__reloj { font-size: 0.78rem; color: var(--color-texto-suave); display: flex; align-items: center; gap: 6px; }
.admin-topbar__punto-vivo { width: 7px; height: 7px; border-radius: 50%; background: var(--verde); box-shadow: 0 0 0 3px rgba(52,211,153,0.2); animation: pulso 2s infinite; }
@keyframes pulso { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.admin-sidebar__toggle { display: none; background: rgba(255,255,255,0.06); border: 1px solid var(--color-superficie-borde); color: #fff; border-radius: var(--radio-s); padding: 8px 10px; }

.admin-contenido { padding: 26px 28px 60px; max-width: 1280px; }

/* ============================== TARJETAS / ESTADÍSTICAS ============================== */
.admin-grid-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 26px; }
.admin-stat {
    background: var(--color-superficie);
    border: 1px solid var(--color-superficie-borde);
    border-radius: var(--radio-m);
    padding: 18px 20px;
}
.admin-stat__numero { font-family: 'Space Grotesk', sans-serif; font-size: 1.8rem; font-weight: 700; }
.admin-stat__texto { color: var(--color-texto-tenue); font-size: 0.84rem; margin-top: 4px; }
.admin-stat--azul .admin-stat__numero { color: var(--azul-3); }
.admin-stat--verde .admin-stat__numero { color: var(--verde); }
.admin-stat--amarillo .admin-stat__numero { color: var(--amarillo); }
.admin-stat--morado .admin-stat__numero { color: var(--morado); }

.admin-panel {
    background: var(--color-superficie);
    border: 1px solid var(--color-superficie-borde);
    border-radius: var(--radio-l);
    padding: 22px 24px;
    margin-bottom: 22px;
}
.admin-panel__cabecera { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.admin-panel__titulo { margin: 0; font-family: 'Space Grotesk', sans-serif; font-size: 1.05rem; }
.admin-panel__acciones { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.admin-buscador { display: flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--color-superficie-borde); border-radius: var(--radio-pastilla); padding: 8px 14px; min-width: 220px; }
.admin-buscador input { background: none; border: none; color: var(--color-texto); font-size: 0.88rem; width: 100%; }
.admin-buscador input:focus { outline: none; }

/* ============================== TABLAS ============================== */
.admin-tabla-wrap { overflow-x: auto; }
.admin-tabla { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.admin-tabla th {
    text-align: left; padding: 10px 12px; color: var(--color-texto-suave);
    font-weight: 600; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-superficie-borde); white-space: nowrap;
}
.admin-tabla td { padding: 12px; border-bottom: 1px solid rgba(255,255,255,0.05); vertical-align: middle; }
.admin-tabla tr:hover td { background: rgba(255,255,255,0.02); }
.admin-tabla__vacio { padding: 30px 12px; text-align: center; color: var(--color-texto-suave); }
.admin-tabla__acciones { display: flex; gap: 6px; flex-wrap: nowrap; }

.admin-badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: var(--radio-pastilla); font-size: 0.72rem; font-weight: 600; white-space: nowrap; }
.admin-badge--verde { background: rgba(52,211,153,0.14); color: #6ee7b7; }
.admin-badge--amarillo { background: rgba(251,191,36,0.14); color: #fcd34d; }
.admin-badge--rojo { background: rgba(248,113,113,0.14); color: #fca5a5; }
.admin-badge--azul { background: rgba(47,168,255,0.14); color: #93c5fd; }
.admin-badge--gris { background: rgba(255,255,255,0.07); color: var(--color-texto-tenue); }
.admin-badge--morado { background: rgba(167,139,250,0.14); color: #c4b5fd; }

.admin-switch { position: relative; display: inline-block; width: 40px; height: 22px; }
.admin-switch input { opacity: 0; width: 0; height: 0; }
.admin-switch__slider { position: absolute; inset: 0; background: rgba(255,255,255,0.12); border-radius: var(--radio-pastilla); cursor: pointer; transition: background var(--transicion); }
.admin-switch__slider::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: transform var(--transicion); }
.admin-switch input:checked + .admin-switch__slider { background: var(--azul-2); }
.admin-switch input:checked + .admin-switch__slider::before { transform: translateX(18px); }

/* ============================== MODAL ============================== */
.admin-modal-fondo {
    position: fixed; inset: 0; background: rgba(3,6,14,0.72); backdrop-filter: blur(4px);
    display: none; align-items: flex-start; justify-content: center; z-index: 100; padding: 40px 16px; overflow-y: auto;
}
.admin-modal-fondo.visible { display: flex; }
.admin-modal {
    background: #0b1226; border: 1px solid var(--color-superficie-borde); border-radius: var(--radio-l);
    width: 100%; max-width: 560px; padding: 26px 26px 24px; box-shadow: var(--sombra-suave);
}
.admin-modal__cabecera { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.admin-modal__titulo { margin: 0; font-family: 'Space Grotesk', sans-serif; font-size: 1.1rem; }
.admin-modal__cerrar { background: rgba(255,255,255,0.06); border: none; color: #fff; width: 30px; height: 30px; border-radius: 50%; font-size: 1rem; }
.admin-modal__pie { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ============================== LÍNEA DE TIEMPO (ACTIVIDADES) ============================== */
.admin-timeline { display: flex; flex-direction: column; gap: 0; }
.admin-timeline__item { display: flex; gap: 14px; padding: 0 0 22px; position: relative; }
.admin-timeline__item::before {
    content: ''; position: absolute; left: 15px; top: 30px; bottom: 0; width: 1px; background: var(--color-superficie-borde);
}
.admin-timeline__item:last-child::before { display: none; }
.admin-timeline__icono {
    width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0; display: flex; align-items: center; justify-content: center;
    font-size: 0.95rem; background: rgba(47,168,255,0.14); z-index: 1;
}
.admin-timeline__contenido { flex-grow: 1; background: rgba(255,255,255,0.03); border: 1px solid var(--color-superficie-borde); border-radius: var(--radio-m); padding: 12px 14px; }
.admin-timeline__cabecera { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 4px; }
.admin-timeline__tipo { font-weight: 600; font-size: 0.85rem; }
.admin-timeline__fecha { font-size: 0.74rem; color: var(--color-texto-suave); white-space: nowrap; }
.admin-timeline__texto { font-size: 0.86rem; color: var(--color-texto-tenue); white-space: pre-wrap; }
.admin-timeline__autor { font-size: 0.72rem; color: var(--color-texto-suave); margin-top: 6px; }
.admin-timeline__borrar { background: none; border: none; color: var(--color-texto-suave); font-size: 0.9rem; padding: 2px 4px; }
.admin-timeline__borrar:hover { color: #fca5a5; }

/* ============================== TARJETAS DE SERVICIOS (cliente) ============================== */
.admin-servicio-card { background: rgba(255,255,255,0.03); border: 1px solid var(--color-superficie-borde); border-radius: var(--radio-m); padding: 14px 16px; margin-bottom: 12px; }
.admin-servicio-card__cabecera { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; margin-bottom: 6px; }
.admin-servicio-card__titulo { font-weight: 600; font-size: 0.94rem; }
.admin-servicio-card__meta { font-size: 0.78rem; color: var(--color-texto-suave); display: flex; gap: 12px; flex-wrap: wrap; margin-top: 6px; }
.admin-servicio-card__notas { font-size: 0.82rem; color: var(--color-texto-tenue); margin-top: 8px; white-space: pre-wrap; }
.admin-servicio-card__acciones { display: flex; gap: 6px; flex-shrink: 0; }

/* ============================== UTILIDADES ============================== */
.admin-vacio { text-align: center; padding: 50px 20px; color: var(--color-texto-suave); }
.admin-vacio__icono { font-size: 2.2rem; margin-bottom: 10px; }
.admin-cargando { text-align: center; padding: 40px 20px; color: var(--color-texto-suave); font-size: 0.9rem; }
.admin-toast-contenedor { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 10px; z-index: 200; }
.admin-toast { padding: 12px 18px; border-radius: var(--radio-s); font-size: 0.86rem; box-shadow: var(--sombra-suave); animation: aparecer 0.25s ease; max-width: 320px; }
.admin-toast--exito { background: #0f2b22; color: #6ee7b7; border: 1px solid rgba(52,211,153,0.35); }
.admin-toast--error { background: #2b1414; color: #fca5a5; border: 1px solid rgba(248,113,113,0.35); }
@keyframes aparecer { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.admin-pill-grupo { display: flex; gap: 8px; flex-wrap: wrap; }
.admin-pill { padding: 7px 14px; border-radius: var(--radio-pastilla); font-size: 0.82rem; border: 1px solid var(--color-superficie-borde); background: rgba(255,255,255,0.03); color: var(--color-texto-tenue); }
.admin-pill.activo { background: rgba(47,168,255,0.16); color: var(--azul-3); border-color: rgba(47,168,255,0.35); }

.admin-nota-tiempo-real { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; color: var(--color-texto-suave); background: rgba(255,255,255,0.03); border: 1px solid var(--color-superficie-borde); border-radius: var(--radio-pastilla); padding: 6px 14px; }

/* ============================== RESPONSIVE ============================== */
@media (max-width: 960px) {
    .admin-sidebar { position: fixed; left: -280px; z-index: 50; transition: left var(--transicion); box-shadow: var(--sombra-suave); }
    .admin-sidebar.abierto { left: 0; }
    .admin-sidebar__toggle { display: inline-flex; }
    .admin-contenido { padding: 20px 16px 50px; }
    .admin-topbar { padding: 14px 16px; }
    .admin-form__fila { grid-template-columns: 1fr; }
}