/* --- ESTILOS GLOBALES Y FUENTES --- */

:root {
    --color-primary: #3498db;    /* Azul Brillante */
    --color-secondary: #27ae60;  /* Verde Esmeralda */
    --color-success: #2ecc71;    /* Verde Lima Fuerte */
    --color-danger: #e74c3c;     /* Rojo Intenso */
    --color-warning: #f39c12;    /* Naranja Vibrante */
    --color-bg: #e9ecef;         /* Gris Claro */
    --color-card-bg: #ffffff;
    --font-color: #2c3e50;
    --menu-width: 150px;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-bg);
}

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

* {
    box-sizing: border-box;
}

/* --- ESTILO DE PÁGINAS DE FORMULARIO (CENTRADO) --- */

.group {
    display: flex;
    flex-direction: column;
    align-items: center;      /* CENTRA HORIZONTALMENTE */
    justify-content: center;   /* CENTRA VERTICALMENTE */
    min-height: 100vh;        /* USA TODO EL ALTO DE LA PANTALLA */
    padding: 20px;
    background-color: var(--color-bg);
}

.form-container {
    background: var(--color-card-bg);
    padding: 30px 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    /* Eliminamos cualquier float o margen extraño que lo mueva */
    margin: 0 auto; 
}

.form-container h1, .form-container h2 {
    color: var(--color-primary);
    text-align: center;
    margin-bottom: 25px;
    font-weight: 600;
}

/* Inputs y Labels */
label {
    display: block;
    margin-bottom: 5px;
    font-weight: 400;
    color: var(--color-primary);
}

label span {
    color: var(--color-danger);
    font-size: 0.85em;
    font-style: italic;
    font-weight: 300;
}

.form-input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
    outline: none;
}

/* Botones */
.form-btn {
    display: block;
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    background-color: var(--color-primary);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 20px;
}

.form-btn:hover {
    filter: brightness(0.9);
}

.btn-update { background-color: var(--color-secondary); }
.btn-delete { background-color: var(--color-danger); }

/* --- ESTILO DEL MENÚ HORIZONTAL Y DESPLEGABLES --- */

.hList {
    list-style: none; 
    padding: 0;
    margin: 40px auto; 
    display: table; 
    border-collapse: collapse;
}

.hList > li {
    display: table-cell; 
    position: relative; 
    text-align: center;
    padding: 0;
    margin: 0;
    white-space: nowrap; 
}

.hList > li > a {
    display: block;
    padding: 15px 20px; 
    color: #ffffff;
    text-align: center;
    font-weight: bold;
    text-transform: uppercase;
    text-decoration: none;
    transition: 0.3s background-color;
}

/* Colores Secciones */
.menu-title-usr { background-color: var(--color-primary); }
.menu-title-prod { background-color: #16a085; }
.menu-title-ctes { background-color: var(--color-secondary); }
.menu-title-prov { background-color: var(--color-warning); }
.menu-title-compras { background-color: #8e44ad; }
.menu-title-ventas { background-color: var(--color-danger); }
.menu-title-exist { background-color: #008080; }
.menu-title-movtos { background-color: #34495e; }

.hList > li:hover > a {
    filter: brightness(0.9);
}

.hList ul {
    list-style: none;
    padding: 0;
    position: absolute; 
    width: 100%; 
    left: 0; 
    background: #ffffff;
    z-index: 10;
    visibility: hidden; 
    opacity: 0;
    transition: visibility 0.3s, opacity 0.3s;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.hList li:hover > ul {
    visibility: visible; 
    opacity: 1;
}

.hList ul li a {
    display: block;
    padding: 10px;
    color: var(--font-color);
    text-align: left;
    border-bottom: 1px solid #e9ecef;
    transition: background-color 0.2s;
}

.hList ul li a:hover {
    background-color: #f8f9fa;
    color: var(--color-primary);
}