:root {
    --primary-color: #0d6efd;
    --bg-light: #f8f9fa;
    --text-dark: #212529;
}

body {
    background-color: var(--bg-light);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    padding-bottom: 70px; /* Espacio para el menú inferior */
    user-select: none; /* Evita selección de texto para parecer nativa */
}

/* Cabecera estilo iOS/Android */
.app-header {
    background: #fff;
    border-bottom: 1px solid #dee2e6;
    padding: 15px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Menú inferior nativo */
.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    background: #fff;
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
    border-top: 1px solid #dee2e6;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
}

.nav-item {
    text-align: center;
    color: #6c757d;
    text-decoration: none;
    font-size: 0.75rem;
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-item i {
    font-size: 1.4rem;
    display: block;
}

/* Cards con bordes redondeados */
.card-fitjob {
    border-radius: 15px;
    border: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    margin-bottom: 15px;
}