/* =========================================================================
   Market CRUD - Hoja de estilos general
   Diseno responsivo: celular, tablet y pantallas verticales grandes
   ========================================================================= */

:root {
    --color-primario: #1f7a4c;
    --color-primario-oscuro: #145a37;
    --color-secundario: #e8a53d;
    --color-fondo: #f4f6f5;
    --color-tarjeta: #ffffff;
    --color-texto: #263238;
    --color-texto-suave: #6b7280;
    --color-borde: #e2e5e4;
    --color-peligro: #d64545;
    --color-peligro-oscuro: #b23a3a;
    --radio: 12px;
    --sombra: 0 2px 10px rgba(0, 0, 0, 0.08);
    --fuente: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--fuente);
    background: var(--color-fondo);
    color: var(--color-texto);
}

a { text-decoration: none; color: inherit; }

/* ---------- Barra superior ---------- */
.barra-superior {
    background: var(--color-primario);
    color: white;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.barra-superior h1 {
    font-size: 1.4rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.barra-superior .acciones {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: transform 0.1s ease, opacity 0.2s ease;
}
.btn:active { transform: scale(0.97); }

.btn-primario { background: var(--color-secundario); color: #2b2b2b; }
.btn-primario:hover { opacity: 0.9; }

.btn-claro { background: rgba(255,255,255,0.15); color: white; }
.btn-claro:hover { background: rgba(255,255,255,0.25); }

.btn-peligro { background: var(--color-peligro); color: white; }
.btn-peligro:hover { background: var(--color-peligro-oscuro); }

.btn-secundario { background: #e5e7eb; color: var(--color-texto); }
.btn-secundario:hover { background: #d1d5db; }

/* ---------- Contenedor general ---------- */
.contenedor {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

/* ---------- Filtros / busqueda ---------- */
.barra-filtros {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.barra-filtros input,
.barra-filtros select {
    padding: 12px 14px;
    border: 1px solid var(--color-borde);
    border-radius: 8px;
    font-size: 1rem;
    flex: 1;
    min-width: 180px;
    background: white;
}

/* ---------- Grid de productos (catalogo) ---------- */
.grid-productos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tarjeta-producto {
    background: var(--color-tarjeta);
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.15s ease;
}
.tarjeta-producto:hover { transform: translateY(-4px); }

.tarjeta-producto .imagen-wrap {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #eef1f0;
    overflow: hidden;
}

.tarjeta-producto img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tarjeta-producto .info {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.etiqueta-categoria {
    align-self: flex-start;
    background: #e6f4ec;
    color: var(--color-primario-oscuro);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tarjeta-producto h3 { margin: 4px 0 0; font-size: 1.05rem; }
.tarjeta-producto p.descripcion { margin: 0; color: var(--color-texto-suave); font-size: 0.85rem; }

.fila-precio-stock {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 8px;
}

.precio { font-size: 1.2rem; font-weight: 700; color: var(--color-primario-oscuro); }
.stock { font-size: 0.8rem; color: var(--color-texto-suave); }
.stock.bajo { color: var(--color-peligro); font-weight: 700; }

/* ---------- Tabla de administracion ---------- */
.tabla-admin-wrap {
    background: var(--color-tarjeta);
    border-radius: var(--radio);
    box-shadow: var(--sombra);
    overflow-x: auto;
}

table.tabla-admin {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

table.tabla-admin th, table.tabla-admin td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-borde);
    font-size: 0.92rem;
}

table.tabla-admin th {
    background: #f0f2f1;
    font-weight: 700;
    position: sticky;
    top: 0;
}

table.tabla-admin img.miniatura {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 8px;
}

.badge-inactivo { background: #fde8e8; color: var(--color-peligro-oscuro); padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: 700; }
.badge-activo { background: #e6f4ec; color: var(--color-primario-oscuro); padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: 700; }

.acciones-tabla { display: flex; gap: 6px; flex-wrap: wrap; }
.acciones-tabla button { padding: 6px 10px; font-size: 0.82rem; }

/* ---------- Formularios / Modal ---------- */
.overlay-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 100;
}
.oculto { display: none !important; }

.tarjeta-modal {
    background: white;
    border-radius: var(--radio);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
}

.tarjeta-modal h2 { margin-top: 0; }

.campo-formulario { margin-bottom: 14px; display: flex; flex-direction: column; gap: 6px; }
.campo-formulario label { font-weight: 600; font-size: 0.9rem; }
.campo-formulario input, .campo-formulario select, .campo-formulario textarea {
    padding: 10px 12px;
    border: 1px solid var(--color-borde);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
}

.fila-dos-columnas { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.selector-imagen { display: flex; gap: 16px; margin-bottom: 10px; }
.selector-imagen label { display: flex; align-items: center; gap: 6px; font-weight: 500; cursor: pointer; }

.previsualizacion {
    width: 100%;
    max-height: 160px;
    object-fit: cover;
    border-radius: 8px;
    margin-top: 8px;
    border: 1px solid var(--color-borde);
}

.acciones-modal { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* ---------- Login ---------- */
.pantalla-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primario) 0%, var(--color-primario-oscuro) 100%);
    padding: 16px;
}

.caja-login {
    background: white;
    padding: 36px 32px;
    border-radius: var(--radio);
    width: 100%;
    max-width: 380px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

.caja-login h1 { text-align: center; margin-top: 0; color: var(--color-primario-oscuro); font-size: 1.4rem; }
.caja-login p.subtitulo { text-align: center; color: var(--color-texto-suave); margin-top: -8px; margin-bottom: 24px; font-size: 0.9rem; }

.mensaje-error {
    background: #fde8e8;
    color: var(--color-peligro-oscuro);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 0.88rem;
    margin-bottom: 14px;
}

.pie-login { text-align: center; margin-top: 18px; font-size: 0.82rem; color: var(--color-texto-suave); }

/* ---------- Mensajes vacios / estado ---------- */
.estado-vacio { text-align: center; padding: 60px 20px; color: var(--color-texto-suave); }

/* =========================================================================
   RESPONSIVO
   ========================================================================= */

/* Tablets horizontal / pantallas medianas */
@media (max-width: 1024px) {
    .grid-productos { grid-template-columns: repeat(3, 1fr); }
}

/* Tablets verticales grandes (ej. iPad en modo vertical: 768-834px) */
@media (max-width: 834px) {
    .grid-productos { grid-template-columns: repeat(2, 1fr); }
    .barra-superior { padding: 14px 18px; }
    .contenedor { padding: 18px; }
    .fila-dos-columnas { grid-template-columns: 1fr; }
}

/* Celulares grandes / tablets pequenas en vertical */
@media (max-width: 600px) {
    .grid-productos { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .barra-superior { flex-direction: column; align-items: flex-start; }
    .barra-superior .acciones { width: 100%; justify-content: flex-end; }
    table.tabla-admin { min-width: 600px; }
}

/* Celulares pequenos */
@media (max-width: 420px) {
    .grid-productos { grid-template-columns: 1fr; }
    .caja-login { padding: 28px 20px; }
}